A strong electric-over-hydraulic brake kit matches the trailer’s axle count and brake capacity, then supplies the actuator and the components needed to connect the system. These nine Southwest Wheel MAXX kits cover single, tandem, and triple axles, with listed capacities from 3,500 to 7,000 pounds and integral or slip-over disc configurations. Several include a DeeMaxx 1600 PSI actuator with a built-in capability adapter, a brake flex-hose kit, and an LED breakaway kit with charger and cable.
The right choice depends first on axle configuration and the trailer’s existing hub or rotor arrangement—not simply the largest capacity in the list. Compare those fit details before selecting a kit; the products differ in axle count, caliper finish, and brake style, even when they share the same actuator.
The Southwest Wheel MAXX Tandem 3,500 Gold is the best overall fit for a buyer seeking a complete electric-over-hydraulic kit for a common tandem-axle configuration. Its listed kit includes a 1600 PSI actuator with built-in capability adapter, 20-foot tandem brake flex hoses, a breakaway kit and charger, and four gold zinc 3,500-pound calipers with disc brakes and TruRyde bearings. Confirm that the trailer’s axle and brake hardware match before ordering.
Our Top Picks
Best OverallSouthwest Wheel MAXX Tandem 3,500 Gold
Its tandem configuration includes four 3,500-pound gold zinc calipers, a 1600 PSI actuator, 20-foot tandem hoses, and a breakaway kit.
View on Amazon
Higher CapacitySouthwest Wheel MAXX Tandem 5,200
The tandem kit raises listed capacity to 5,200 pounds and includes four MAXX calipers, the 1600 PSI actuator, tandem hoses, and breakaway components.
View on Amazon
Single-Axle PickSouthwest Wheel MAXX Single 3,500 Gold
This single-axle package includes two 3,500-pound gold zinc calipers, an 18-foot single-axle hose kit, a 1600 PSI actuator, and breakaway components.
View on Amazon- Slip-Over Option Southwest Wheel MAXX Tandem 3,500 Slip-Over
Compare Kits by Axle Setup and Brake Hardware
| # | Product | Compatible with Vehicle Type | Buy |
|---|---|---|---|
| 1 | 1. Southwest Wheel MAXX Tandem 3,500 GoldBest Overall | Tandem Axle Trailer | View on Amazon |
| 2 | 2. Southwest Wheel MAXX Tandem 5,200Higher Capacity | Car | View on Amazon |
| 3 |  3. Southwest Wheel MAXX Tandem 7,000 GoldGold-Zinc Tandem Disc Setup | Car | View on Amazon |
| 4 | 4. Southwest Wheel MAXX Single 3,500 GoldSingle-Axle Pick | Car | View on Amazon |
| 5 |  5. Southwest Wheel MAXX Tandem 3,500 Slip-OverSlip-Over Option | Trailer | View on Amazon |
| 6 |  6. Southwest Wheel MAXX Triple 5,200 GoldGold-Zinc Triple-Axle Package | Car | View on Amazon |
| 7 |  7. Southwest Wheel MAXX Triple 5,200Triple-Axle MAXX 5,200-Pound Kit | Car | View on Amazon |
| 8 |  8. Southwest Wheel MAXX Triple 3,500Triple-Axle MAXX Calipers | Car | View on Amazon |
| 9 |  9. Southwest Wheel MAXX Single 3,500 Slip-OverQuick-Response Single-Axle Kit | trailer | View on Amazon |
Detailed Reviews: Best Electric Over Hydraulic Brake Kit
#1 · Best Overall
1. Southwest Wheel MAXX Tandem 3,500 Gold
- Compatible with Vehicle Type: Tandem Axle Trailer
Best for: 3,500-Pound Tandem Gold-Zinc Kit.
Why it ranks #1: Its tandem configuration includes four 3,500-pound gold zinc calipers, a 1600 PSI actuator, 20-foot tandem hoses, and a breakaway kit.
Four 3,500-pound gold-zinc DeeMaxx calipers give this tandem-axle kit its specific capacity and finish combination. The package adds a 1600 PSI actuator, 20-foot tandem flex-hose kit, and breakaway equipment, enabling a tandem-trailer buyer to source these core listed components together.
The DOT-TA20K flex-hose kit is 20 feet and specified for tandem axles, matching the four-caliper layout. Its TR-EOHA1600 actuator includes a built-in capability adapter, giving the package a named actuator as well as the axle-specific hoses. DeeMaxx disc brakes and TruRyde bearings accompany the gold-zinc calipers. The top-load LED breakaway kit, charger, and four-foot cable round out the included components for a buyer assembling a tandem braking system.
- Four 3,500-pound gold-zinc DeeMaxx calipers
- 1600 PSI actuator with built-in capability adapter
- 20-foot tandem-axle flex-hose kit
- Disc brakes, TruRyde bearings, and breakaway kit included
- This four-caliper package is configured for tandem axles, not single or triple axles.
Skip it if you need slip-over brakes; SOUTHWEST WHEEL DMK35RG2 lists a tandem slip-over disc configuration.
This is a fit for tandem-trailer owners seeking 3,500-pound gold-zinc calipers with actuator, axle-specific hoses, and breakaway components. Confirm the tandem layout against your intended setup; the kit is not the single-axle version.
Full product details
| Brand | SOUTHWEST WHEEL |
|---|---|
| Compatible with Vehicle Type | Tandem Axle Trailer |
| Included Components | Comes with housing |
| Manufacturer | SOUTHWEST WHEEL |
| Part Number | DMK35IG2 |
| Model Number | DMK35IG2 |
| Model Year | 2026 |
Listed on Amazon as: Southwest Wheel MAXX KIT Electric Over Hydraulic 3,500 lbs. Disc Brake Kit for a Tandem Axle with Gold Zinc Caliper
View on Amazon#2 · Higher Capacity
2. Southwest Wheel MAXX Tandem 5,200
- Compatible with Vehicle Type: Car
Best for: MAXX Calipers for Tandem Axles.
Why it ranks #2: The tandem kit raises listed capacity to 5,200 pounds and includes four MAXX calipers, the 1600 PSI actuator, tandem hoses, and breakaway components.
Four 5,200-pound DeeMaxx MAXX-finish calipers distinguish this tandem-axle kit from the gold-zinc version. The package combines them with a 1600 PSI electric-over-hydraulic actuator, a 20-foot tandem hose kit, and a breakaway kit, enabling a buyer to source the major listed braking components together.
The TR-EOHA1600 actuator has a built-in capability adapter, and the DOT-TA20K hose kit is explicitly the tandem-axle version. That pairing follows the kit’s four-caliper layout and gives an installer the listed hydraulic components for a tandem configuration. DeeMaxx integral disc brakes come with TruRyde bearings and seals, while the top-load LED breakaway kit includes a charger and four-foot cable. The calipers’ MAXX finish is the defining material-finish choice here.
- Four 5,200-pound DeeMaxx MAXX-finish calipers
- 1600 PSI actuator with built-in capability adapter
- 20-foot tandem-axle flex-hose kit
- Integral disc brakes with TruRyde bearings and seals
- The MAXX-finish caliper configuration is for tandem axles, not a single-axle trailer.
Skip it if you need gold-zinc calipers; SOUTHWEST WHEEL DMK52IG3 pairs that finish with a triple-axle layout.
Choose this package for a tandem trailer whose buyer wants four 5,200-pound MAXX-finish calipers and a bundled actuator, hose, and breakaway system. The axle configuration and caliper finish are specific choices, not a universal fit.
Full product details
| Brand | SOUTHWEST WHEEL |
|---|---|
| Compatible with Vehicle Type | Car |
| Included Components | Comes with housing |
| Manufacturer | SOUTHWEST WHEEL |
| Part Number | DMK52IM2 |
| Model Number | DMK52IM2 |
| Model Year | 2026 |
Listed on Amazon as: Southwest Wheel MAXX KIT Electric Over Hydraulic 5,200 lbs. Disc Brake Kit for a Tandem Axle with MAXX Caliper
View on Amazon#3
3. Southwest Wheel MAXX Tandem 7,000 Gold
- Compatible with Vehicle Type: Car
Best for: Gold-Zinc Tandem Disc Setup.
Why it ranks #3: For a tandem application needing the highest listed capacity, it supplies four 7,000-pound gold zinc calipers, integral discs, and the complete actuator and hose kit.
Four 7,000-pound DeeMaxx gold-zinc calipers make this MAXX kit the highest-capacity tandem-axle option in this group. Its 1600 PSI electric-over-hydraulic actuator, 20-foot tandem flex-hose kit, and breakaway kit arrive together, giving a buyer a coordinated set of braking components for a tandem trailer.
The TR-EOHA1600 actuator includes a built-in capability adapter, while the DOT-TA20K hose kit is specified for tandem axles and measures 20 feet. Together, those components support an electric-over-hydraulic installation across the intended axle layout. Four 7,000-pound calipers pair with integral disc brakes, TruRyde bearings, and seals; the gold-zinc finish is identified as the caliper finish. The included LED breakaway kit and charger add another part of the braking system to the package.
- Four 7,000-pound DeeMaxx gold-zinc calipers
- 1600 PSI actuator with built-in capability adapter
- 20-foot tandem-axle brake flex-hose kit
- LED breakaway kit, charger, cable, bearings, and seals included
- The kit is configured for tandem axles, not single- or triple-axle layouts.
Skip it if you need a single-axle setup; SOUTHWEST WHEEL DMK35IG1 is listed for a single axle.
For a tandem-trailer owner seeking 7,000-pound calipers and an included actuator, hoses, and breakaway components, this is the high-capacity configuration. Its tandem layout is the key boundary; it is not the single- or triple-axle kit.
Full product details
| Brand | SOUTHWEST WHEEL |
|---|---|
| Compatible with Vehicle Type | Car |
| Included Components | Comes with housing |
| Manufacturer | SOUTHWEST WHEEL |
| Part Number | DMK7IG2 |
| Model Number | DMK7IG2 |
| Model Year | 2026 |
Listed on Amazon as: Southwest Wheel MAXX KIT Electric Over Hydraulic 7,000 lbs. Disc Brake Kit for a Tandem Axle with Gold Zinc Caliper
View on Amazon#4 · Single-Axle Pick
4. Southwest Wheel MAXX Single 3,500 Gold
- Compatible with Vehicle Type: Car
Best for: Gold-Zinc Single-Axle Kit.
Why it ranks #4: This single-axle package includes two 3,500-pound gold zinc calipers, an 18-foot single-axle hose kit, a 1600 PSI actuator, and breakaway components.
Two 3,500-pound DeeMaxx gold-zinc calipers and an 18-foot single-axle hose kit make this MAXX package specifically suited to a single-axle layout. It also includes a 1600 PSI electric-over-hydraulic actuator and breakaway components, covering key parts of the listed braking system.
The DOT-SA18K flex-hose kit is specified for a single axle and measures 18 feet, matching the two-caliper layout. The TR-EOHA1600 actuator supplies 1600 PSI and includes a built-in capability adapter, bringing the hydraulic actuator into the same package. DeeMaxx disc brakes and TruRyde bearings accompany the gold-zinc calipers. The included top-load LED breakaway kit, charger, and four-foot cable add safety-system components to the listed installation parts.
- Two 3,500-pound gold-zinc DeeMaxx calipers
- 1600 PSI actuator with built-in capability adapter
- 18-foot single-axle brake flex-hose kit
- Disc brakes, TruRyde bearings, and breakaway kit included
- The 18-foot hose and two-caliper package is listed for a single axle only.
Skip it if you need brakes for two axles; SOUTHWEST WHEEL DMK35IG2 includes four gold-zinc calipers and tandem hoses.
A single-axle trailer owner wanting gold-zinc calipers, an actuator, and an 18-foot hose in one package should consider this configuration. Its two-caliper single-axle layout is the relevant limit for buyers with more axles.
Full product details
| Brand | SOUTHWEST WHEEL |
|---|---|
| Compatible with Vehicle Type | Car |
| Included Components | Comes with housing |
| Manufacturer | SOUTHWEST WHEEL |
| Part Number | DMK35IG1 |
| Model Number | DMK35IG1 |
| Model Year | 2026 |
Listed on Amazon as: Southwest Wheel MAXX KIT Electric Over Hydraulic 3,500 lbs. Disc Brake Kit for a Single Axle with Gold Zinc Caliper
View on Amazon#5 · Slip-Over Option
5. Southwest Wheel MAXX Tandem 3,500 Slip-Over
- Compatible with Vehicle Type: Trailer
Best for: Tandem Slip-Over Disc Kit.
Why it ranks #5: It pairs a tandem layout and four 3,500-pound gold zinc calipers with slip-over discs, plus a 1600 PSI actuator and 20-foot tandem hoses.
Four 3,500-pound gold-zinc calipers paired with slip-over disc brakes define this tandem-axle MAXX kit. Its 1600 PSI actuator, 20-foot tandem hose kit, and breakaway components are included, giving buyers a bundled option when slip-over brakes are the desired disc configuration.
The DOT-TA20K hose kit is specified for tandem axles and measures 20 feet, complementing the four-caliper layout. The TR-EOHA1600 actuator supplies the electric-over-hydraulic element, while the included breakaway kit and charger add listed system components. Gold-zinc DeeMaxx calipers pair with slip-over discs, which is the critical distinction from a standard disc-brake configuration. Its 3,500-pound rating and tandem layout make the application boundaries explicit.
- Four 3,500-pound gold-zinc DeeMaxx calipers
- Slip-over disc brakes for a tandem axle
- 1600 PSI electric-over-hydraulic actuator
- 20-foot tandem hose kit and breakaway kit included
- Slip-over brakes are a specific configuration and may not suit buyers seeking standard integral discs.
Skip it if you want integral discs; SOUTHWEST WHEEL DMK35IG2 lists tandem gold-zinc calipers with DeeMaxx disc brakes.
Consider this for a tandem-trailer owner specifically seeking 3,500-pound gold-zinc calipers and slip-over discs with an actuator and hose kit. The slip-over brake style is the key boundary when comparing brake configurations.
Full product details
| Brand | SOUTHWEST WHEEL |
|---|---|
| Compatible with Vehicle Type | Trailer |
| Included Components | Comes with housing |
| Manufacturer | SOUTHWEST WHEEL |
| Part Number | DMK35RG2 |
| Manufacturer Warranty Description | Two-year no-hassle warranty |
| Model Number | DMK35RG2 |
| Model Year | 2026 |
Listed on Amazon as: SOUTHWEST WHEEL MAXX KIT Electric Over Hydraulic 3,500 lbs. Slip Over Disc Brake Kit for a Tandem Axle with Gold Zinc Calipers
View on Amazon#6
6. Southwest Wheel MAXX Triple 5,200 Gold
- Compatible with Vehicle Type: Car
Best for: Gold-Zinc Triple-Axle Package.
Why it ranks #6: For a triple axle at 5,200 pounds, it includes six gold zinc calipers, a triple-axle hose kit, the actuator, and breakaway components.
Six 5,200-pound gold-zinc calipers equip this MAXX kit for a triple axle, making its six-caliper layout the defining feature. A 1600 PSI actuator, 20-foot triple-axle hose kit, and breakaway kit are also included, giving buyers a package organized around that three-axle configuration.
The TR-EOHA1600 actuator includes a built-in capability adapter, while the DOT-TR20K hose kit is specified for triple axles and measures 20 feet. Those named components align with the six-caliper layout for a three-axle installation. DeeMaxx integral disc brakes are paired with TruRyde bearings and seals, and the gold-zinc finish identifies the calipers. The included top-load LED breakaway kit, charger, and four-foot cable add further system components to the package.
- Six 5,200-pound gold-zinc DeeMaxx calipers
- 1600 PSI actuator with built-in capability adapter
- 20-foot triple-axle brake flex-hose kit
- Integral discs, TruRyde bearings and seals, and breakaway kit included
- Its six-caliper, triple-axle configuration is not intended for tandem or single-axle layouts.
Skip it if you have a tandem trailer; SOUTHWEST WHEEL DMK52IM2 is the 5,200-pound tandem MAXX-caliper kit.
For a triple-axle trailer owner seeking six 5,200-pound gold-zinc calipers and the matching hose configuration, this bundle covers the listed core components. Its three-axle layout is a firm boundary for choosing this kit.
Full product details
| Brand | SOUTHWEST WHEEL |
|---|---|
| Compatible with Vehicle Type | Car |
| Included Components | Comes with housing |
| Manufacturer | SOUTHWEST WHEEL |
| Part Number | DMK52IG3 |
| Model Number | DMK52IG3 |
| Model Year | 2026 |
Listed on Amazon as: Southwest Wheel MAXX KIT Electric Over Hydraulic 5,200 lbs. Disc Brake Kit for a Triple Axle with Gold Zinc Caliper
View on Amazon#7
7. Southwest Wheel MAXX Triple 5,200
- Compatible with Vehicle Type: Car
Best for: Triple-Axle MAXX 5,200-Pound Kit.
Why it ranks #7: This triple-axle 5,200-pound kit supplies six MAXX calipers and integral discs, alongside the 1600 PSI actuator and 20-foot triple-axle hoses.
Six 5,200-pound DeeMaxx MAXX-finish calipers anchor this triple-axle kit, pairing a higher caliper rating with the three-axle layout. The included actuator, 20-foot triple-axle hose kit, and breakaway package make it a bundled option for buyers seeking those specific components together.
The TR-EOHA1600 actuator includes a built-in capability adapter, while the DOT-TR20K flex-hose kit is specified for triple axles and runs 20 feet. That combination corresponds to the kit’s six-caliper layout. DeeMaxx integral disc brakes pair with TruRyde bearings and seals, and the six calipers carry the MAXX finish. A top-load LED breakaway kit, charger, and four-foot cable are also included, reducing the need to source those listed components separately.
- Six 5,200-pound DeeMaxx MAXX-finish calipers
- 1600 PSI actuator with built-in capability adapter
- 20-foot triple-axle brake flex-hose kit
- Integral disc brakes, TruRyde bearings, and breakaway kit included
- The six-caliper configuration is limited to triple-axle applications.
Skip it if you need gold-zinc calipers; SOUTHWEST WHEEL DMK52IG3 provides that finish for a triple axle.
For a triple-axle trailer owner seeking six 5,200-pound MAXX-finish calipers and a bundled actuator and hose system, this is the matching layout. The MAXX finish and triple-axle configuration are important selection boundaries.
Full product details
| Brand | SOUTHWEST WHEEL |
|---|---|
| Compatible with Vehicle Type | Car |
| Included Components | Comes with housing |
| Manufacturer | SOUTHWEST WHEEL |
| Part Number | DMK52IM3 |
| Model Number | DMK52IM3 |
| Model Year | 2026 |
Listed on Amazon as: Southwest Wheel MAXX KIT Electric Over Hydraulic 5,200 lbs. Disc Brake Kit for a Triple Axle with MAXX Caliper
View on Amazon#8
8. Southwest Wheel MAXX Triple 3,500
- Compatible with Vehicle Type: Car
Best for: Triple-Axle MAXX Calipers.
Why it ranks #8: It serves a triple axle with six 3,500-pound MAXX dacromet calipers and integral rotors, plus a triple-axle hose kit and actuator.
Six 3,500-pound DeeMaxx MAXX-finish calipers make this triple-axle package a distinct choice for trailers using that axle layout. It also includes the 1600 PSI actuator, a 20-foot triple-axle flex-hose kit, and breakaway components, bringing the listed braking pieces together in one kit.
The TR-EOHA1600 actuator has a built-in capability adapter, and the DOT-TR20K hose kit is the triple-axle version at 20 feet. Those parts correspond to the six-caliper configuration and help define the intended installation layout. The six 3,500-pound calipers have a MAXX dacromet finish; DeeMaxx integral rotors and TruRyde bearings are also included. A top-load LED breakaway kit and charger provide additional listed components for the trailer braking system.
- Six 3,500-pound MAXX-finish calipers
- 1600 PSI actuator with built-in capability adapter
- 20-foot triple-axle flex-hose kit
- Integral rotors, TruRyde bearings, and breakaway kit included
- The six-caliper package is configured for triple axles, not tandem or single axles.
Skip it if you need a tandem setup; SOUTHWEST WHEEL DMK35IM2 is the 3,500-pound tandem MAXX-caliper option.
This kit fits a triple-axle trailer owner looking for six 3,500-pound MAXX-finish calipers with actuator, hoses, and breakaway components bundled. Its triple-axle layout is the central fit consideration before selecting it.
Full product details
| Brand | SOUTHWEST WHEEL |
|---|---|
| Compatible with Vehicle Type | Car |
| Included Components | Comes with housing |
| Manufacturer | SOUTHWEST WHEEL |
| Part Number | DMK35IM3 |
| Model Number | DMK35IM3 |
| Model Year | 2026 |
Listed on Amazon as: Southwest Wheel MAXX KIT Electric over Hydraulic 3,500 lbs. Disc Brake Kit for a Triple Axle with MAXX Caliper
View on Amazon#9
9. Southwest Wheel MAXX Single 3,500 Slip-Over
- Compatible with Vehicle Type: trailer
Best for: Quick-Response Single-Axle Kit.
Why it ranks #9: This single-axle slip-over kit includes a 1600 PSI actuator and gold zinc calipers, but its axle-specific configuration is less broadly applicable than tandem kits.
Its actuator reaches 1,000 PSI in 0.184 seconds, giving this single-axle kit a concrete response specification alongside its 3,500-pound gold-zinc calipers. The package combines DeeMaxx slip-over disc brakes with the 1600 PSI actuator, making it a focused option for a buyer seeking this brake style.
The TR-EOHA1600 actuator’s stated response—1,000 PSI in 0.184 seconds—offers a specific performance reference, and its built-in compatibility adapter supports integration. Gold-zinc DeeMaxx calipers pair with slip-over disc brakes for the listed 3,500-pound single-axle application. The complete-kit description frames the components as a system rather than a caliper-only purchase. Buyers should note that the product title specifies a single axle and slip-over brakes, which determine the intended configuration.
- Actuator reaches 1,000 PSI in 0.184 seconds
- 1600 PSI electric-over-hydraulic actuator with built-in adapter
- 3,500-pound gold-zinc DeeMaxx calipers
- Slip-over disc brakes for a single-axle setup
- The slip-over brake configuration is specifically listed for a single axle.
Skip it if you need a tandem slip-over kit; SOUTHWEST WHEEL DMK35RG2 lists tandem-axle slip-over brakes.
This suits a single-axle trailer owner who values the stated actuator response and wants 3,500-pound gold-zinc calipers with slip-over discs. Its single-axle layout is the main fit boundary, so it is not the tandem alternative.
Full product details
| Brand | SOUTHWEST WHEEL |
|---|---|
| Compatible with Vehicle Type | trailer |
| Included Components | Comes with housing |
| Manufacturer | SOUTHWEST WHEEL |
| Part Number | DMK35RG1 |
| Model Number | DMK35RG1 |
| Model Year | 2026 |
Listed on Amazon as: Southwest Wheel MAXX KIT Electric Over Hydraulic 3,500 lbs. Slip Over Disc Brake Kit for a Single Axle with Gold Zinc Calipers
View on AmazonCheck the brake and hub layout before ordering
Confirm the trailer’s axle count and existing brake mounting arrangement before choosing a kit; the same listed capacity does not make these configurations interchangeable. The product set includes single-, tandem-, and triple-axle packages, with different hose kits and caliper counts: two calipers for a single axle, four for a tandem, and six for a triple. It also distinguishes integral disc kits from slip-over disc kits.
A slip-over option is not automatically a fit for a trailer currently set up for integral rotors, or vice versa. Verify the axle rating, hub or rotor arrangement, and the physical fit of the included components against the trailer’s existing parts.
The supplied descriptions do not establish compatibility with every hub, wheel, brake controller, or tow vehicle. Resolve those details with the trailer or component manufacturer before purchase rather than assuming that a matching axle count is sufficient.
Understand the actuator and controller compatibility trap
An electric-over-hydraulic kit still depends on a compatible electrical control setup, so verify the tow vehicle’s brake controller and wiring before installation. Many listed kits use the TR-EOHA1600 DeeMaxx actuator and identify a built-in capability adapter, but that feature alone does not establish compatibility with every controller or vehicle. One product description reports that its actuator reaches 1,000 PSI in 0.184 seconds; that is a listed specification, not a guarantee of stopping distance or performance on a particular trailer.
A mismatch in controller signal, wiring, or hydraulic connections can leave the system unable to operate as intended. Confirm connection requirements and installation instructions with the manufacturer or a qualified trailer-brake technician.
Also check that the included hose length matches the axle arrangement: the listed single-axle kit uses an 18-foot hose set, while tandem and triple kits list 20-foot sets.
How to Choose an Electric-Over-Hydraulic Kit
Axle count and hose routing
Choose a kit that matches the trailer’s number of braked axles and allows its supplied hoses to reach the brake assemblies. The options here cover single, tandem, and triple axles: the single-axle package lists an 18-foot hose kit, while the tandem and triple packages list 20-foot hose kits. Caliper quantities also vary with layout—two, four, or six respectively.
A single-axle trailer should start with a single-axle package; a tandem or triple trailer should use its matching hose and caliper configuration. Buyers with longer or unusual routing should verify hose reach and connection placement before ordering, since the listed length alone cannot confirm fit on every trailer.
Capacity and brake assembly style
Match the kit’s listed axle capacity and disc arrangement to the trailer’s existing equipment. Listed capacities range from 3,500 to 7,000 pounds, and the set includes both integral disc and slip-over disc options. The 7,000-pound calipers appear in a tandem kit; 5,200-pound choices cover tandem and triple axles, while 3,500-pound kits span all three axle layouts.
Buyers whose trailer hardware is designed for slip-over discs should compare the two slip-over options; those using integral discs have more choices across axle counts. Do not select by capacity alone: confirm axle rating and rotor or hub compatibility using the trailer and component specifications.
Caliper finish and included system parts
Compare the specified caliper finish and confirm that the package includes the system components your installation requires. Several kits list gold zinc calipers; others use MAXX finish calipers, and the triple-axle 3,500-pound option specifies MAXX dacromet finish. Most descriptions identify a DeeMaxx 1600 PSI actuator with a built-in capability adapter, a brake flex-hose kit, and a breakaway kit with charger and cable.
Bearing details vary in the wording: some list TruRyde bearings and seals, while others mention bearings without seals. Buyers seeking a particular finish or bearing-and-seal combination should verify the complete contents for the exact product before ordering; finish names alone do not establish a specific service life.
Which Electric-Over-Hydraulic Kit Fits My Trailer?
Start with axle count and brake style, then choose the matching capacity. For a tandem trailer using 3,500-pound gold zinc calipers and integral discs, the Southwest Wheel MAXX Tandem 3,500 Gold leads with a complete actuator, hose, and breakaway package. Tandem owners needing the listed 5,200-pound calipers can consider the Southwest Wheel MAXX Tandem 5,200; those needing 7,000-pound calipers should compare the Southwest Wheel MAXX Tandem 7,000 Gold.
For a single axle, the Southwest Wheel MAXX Single 3,500 Gold is the standard disc option, while the Southwest Wheel MAXX Single 3,500 Slip-Over suits a matching slip-over arrangement. Triple-axle buyers should choose between the 5,200-pound and 3,500-pound options only after confirming their existing brake hardware and axle specifications.
Frequently Asked Questions
How can I confirm whether my trailer is compatible with an electric-over-hydraulic actuator?
Check your trailer’s axle count, brake style, existing calipers, and axle specifications against the kit listing. Also verify that the actuator and your brake controller are compatible with the trailer and vehicle. If any detail is unclear, confirm it with the trailer or component manufacturer before ordering; matching capacity alone does not establish fit.
Do I need to replace the brake controller when converting to electric-over-hydraulic brakes?
Not necessarily, but the controller must support electric-over-hydraulic operation and be compatible with the actuator. A controller intended only for electric drum brakes may not work correctly. Check the controller and actuator documentation, along with vehicle wiring compatibility, before converting; replace or reconfigure the controller only if those requirements call for it.
How should I maintain and bleed an electric-over-hydraulic trailer brake system?
Follow the actuator and brake manufacturers’ instructions for the specified brake fluid, bleeding procedure, and service intervals. Inspect the system for leaks or damaged hoses, and keep connections secure. Bleed the brakes in the prescribed sequence until air is removed; if pedal or braking behavior remains abnormal, stop and have the system checked.
How do I choose between single-, tandem-, and triple-axle kits?
Start by matching the kit to your trailer’s axle count, then confirm the listed caliper capacity and brake hardware. For example, the supplied recommendations distinguish tandem 3,500-, 5,200-, and 7,000-pound options, as well as single- and triple-axle kits. Verify your existing components before selecting a configuration.
What parts should I verify are included with the kit?
Compare the listing against the parts your installation requires, including the actuator, hoses, breakaway components, calipers, and brake assemblies. The recommended tandem 3,500-pound gold kit lists a 1600 PSI actuator with built-in capability adapter, 20-foot tandem flex hoses, a breakaway kit and charger, and four calipers with integral disc brakes and bearings.
Final Words
Choose by axle count first, then match the caliper capacity, brake style, and existing hardware. For a common tandem setup with 3,500-pound gold zinc calipers and integral discs, the Southwest Wheel MAXX Tandem 3,500 Gold is the strongest complete-kit fit in this roundup. Other tandem, single-, and triple-axle options suit different configurations.
Confirm the trailer’s specifications and controller compatibility before ordering.