Best 2 Stroke Exhaust Pipe for Bikes, Scooters, and Pocket Bikes

#1 · Best Overall

1. FVRITO Viper Flexible Exhaust

• Compatible with Vehicle Type: Bike,Scooter
• Outlet Connection Size: 40 millimeters
• Weight: 0.98 kg

Best for: Flexible bike exhaust routing.

Why it ranks #1: Covers 49cc–100cc 2-stroke engines, offers flexible stainless-steel positioning, includes hardware, and lists a 1.57-inch inlet and 40mm outlet.

A flexible stainless-steel expansion section and bendable silencer let the FVRITO Viper pipe mount at different angles, addressing varied engine positions on small two-stroke vehicles. Its stated fit range spans 49cc to 100cc engines, and its listed 1.57-inch inlet connection and 40-millimeter outlet provide useful sizing details.

FVRITO lists this exhaust for 49cc, 50cc, 60cc, 66cc, 80cc, and 100cc two-stroke engines used on motorized bicycles, pocket bikes, scooters, and pit dirt bikes. The flexible expansion pipe and bendable silencer support different mounting angles, which can help route the assembly around an engine's position. Stainless-steel construction is specified, while the 1.57-inch inlet and 40-millimeter outlet give buyers concrete connection dimensions to compare with their setup before installation.

Skip it if you need a stated quieter-than-stock result; FPTPEHPC's flexible 49cc–100cc pipe explicitly describes its silencer as quieter than stock.

The Viper suits owners of listed small two-stroke bikes who need angular routing and want connection dimensions stated up front. Check that its 1.57-inch inlet and 40-millimeter outlet match the intended installation.

Listed on Amazon as: Viper Flexible Exhaust Muffler Pipe Silencer with Hardware for 2 Stroke 49cc 60cc 66cc 80cc 100cc Engine Gas Motorized Bicycle Motor Bike Parts Silver

#2 · Most Adjustable

2. MBGYL Flexible Muffler

• Compatible with Vehicle Type: Scooter

Best for: Multi-angle small-engine installs.

Why it ranks #2: Its flexible stainless-steel expansion pipe and bendable silencer allow multi-angle installation across listed 49cc–100cc engines, with a gasket and mounting nut kit included.

A flexible stainless-steel expansion pipe paired with a bendable silencer lets this MBGYL exhaust accommodate multi-angle installation on listed small two-stroke engines. Its broad stated range—from 49cc to 100cc—makes it a candidate for motorized bicycles, pocket bikes, scooters, and pit dirt bikes using those engine sizes.

The flexible pipe and bendable silencer are intended to allow installation at different angles, which can help when engine position constrains the exhaust route. MBGYL lists compatibility with 49cc, 60cc, 66cc, 80cc, and 100cc two-stroke engines across motorized bicycles, gas motorbikes, pocket bikes, scooters, and pit dirt bikes. A mounting gasket and nut kit are included, giving the installation package basic mounting hardware alongside the muffler. Reinforced flange welding and the flexible pipe body are identified as anti-deformation features.

Skip it if you want a stated noise-reduction or power benefit; WEIYINGSI's 47cc/49cc expansion-chamber pipe specifically claims lower noise and a power boost.

Choose this MBGYL assembly when a listed 49cc–100cc two-stroke engine needs a flexible, multi-angle exhaust and included mounting hardware. Its strongest case is installation adaptability; buyers seeking a stated performance change should weigh that boundary.

Listed on Amazon as: Flexible 2-Stroke Exhaust Muffler Silencer for 49cc-100cc Motorized Bike

#3 · Longest Listed

3. hauertzx Flexible Exhaust

• Compatible with Vehicle Type: Scooter
• Weight: 16 oz

Best for: Long flexible stainless exhaust.

Why it ranks #3: Fits listed 49cc–100cc 2-stroke engines and gives useful fit checks: 40mm mounting-hole distance and 945mm total length.

A 945-millimeter flexible stainless-steel pipe gives this hauertzx muffler a specified long reach and the ability to mount at different angles. It is listed for 49cc–100cc two-stroke motorized bicycles, pocket bikes, scooters, and pit dirt bikes, with a 40-millimeter mounting-hole distance.

The flexible pipe can be mounted at different angles depending on engine position, giving owners of listed small two-stroke vehicles a way to adapt routing. Its 945-millimeter total length is a useful space-planning dimension, and the 40-millimeter mounting-hole distance helps assess flange alignment. Stainless-steel construction and a flange described as stronger with the weld are also specified. Compatibility spans 49cc, 60cc, 66cc, 80cc, and 100cc engines across motorized bicycles, pocket bikes, scooters, and pit dirt bikes.

Skip it if you need a shorter pipe with listed mini-bike dimensions; YLQYYH's 640-millimeter exhaust states its total length and bolt spacing.

This hauertzx exhaust suits owners of listed 49cc–100cc two-stroke vehicles who need angled routing and can accommodate its 945-millimeter length. Check the stated 40-millimeter mounting-hole distance when planning the installation.

Listed on Amazon as: Stainless Steel Flexible Exhaust Muffler Pipe Silencer Gasket for 2 Stroke 49cc 60cc 66cc 80cc 100cc Engine Gas Motorized Bicycle Motor Bike (Silver)

#4 · Quieter Option

4. FPTPEHPC Flexible Exhaust

• Weight: 1.5 lb

Best for: Quieter flexible replacement.

Why it ranks #4: Its bendable silencer is described as quieter than the stock exhaust, while the stated fitment spans 49cc–100cc small engines.

A bendable silencer described as quieter than the stock exhaust is the key distinction of this FPTPEHPC flexible pipe. Its long stainless-steel expansion section can be mounted at different angles, giving owners of listed 49cc–100cc two-stroke bikes another routing option when engine position affects installation.

FPTPEHPC lists the pipe for 49cc, 60cc, 66cc, 80cc, and 100cc two-stroke engines on motorized bicycles, gas motorbikes, pocket bikes, scooters, and pit dirt bikes. Its flexible stainless-steel expansion section and bendable silencer support different mounting angles, helping accommodate varied engine positions. The product description says the silencer is quieter than stock, a practical consideration for riders seeking a less noisy replacement. The supplied facts do not quantify the noise difference or specify connection dimensions.

Skip it if you need inlet and outlet dimensions before choosing; FVRITO's Viper pipe lists a 1.57-inch inlet and 40-millimeter outlet.

This FPTPEHPC pipe fits buyers prioritizing flexible routing and the stated quieter-than-stock silencer for a listed small two-stroke engine. Its supplied details do not give connection sizes, so that boundary matters when planning installation.

Listed on Amazon as: Flexible 2 Stroke Exhaust Muffler Pipe For 49cc 60cc 80cc Motorized Bike

#5 · Named Engine Fit

5. FVRITO YD100 Expansion Exhaust

Best for: YD100 bicycle expansion chamber.

Why it ranks #5: The expansion-chamber pipe lists broad 49cc–100cc fit and names YD100, Zeda80, BT100, YZ80, and PK80 engines.

An optimized expansion chamber is the FVRITO pipe's defining feature for YD100 and other listed two-stroke motorized-bicycle engines. Its stated design harnesses pressure waves to optimize exhaust flow, connecting the chamber's function to operating performance rather than presenting it as a basic muffler-only replacement.

FVRITO lists compatibility with 49cc, 50cc, 66cc, 80cc, and 100cc two-stroke engines, naming YD100, Zeda80, BT100, YZ80, PK80, and MZ65 among the examples. That breadth gives motorized-bicycle owners several specified engine references to compare. The optimized expansion chamber is described as harnessing pressure waves to improve exhaust flow, making chamber performance the central benefit. The supplied facts do not provide dimensions or mounting details, so installation planning has less measurement information here.

Skip it if you need stated pipe dimensions for fit planning; YLQYYH's 640-millimeter mini-bike exhaust lists total length and bolt spacing.

Motorized-bicycle owners with a listed 49cc–100cc engine, especially a named YD100-family application, may value this expansion chamber's stated exhaust-flow approach. Buyers needing dimensions for installation should account for that information boundary.

Listed on Amazon as: Expansion Chamber Exhaust Pipe Muffler for YD100 Motorized Bicycle

#6

6. WEIYINGSI Expansion Chamber

• Compatible with Vehicle Type: ATV, Scooter
• Outlet Connection Size: 39 millimeters
• Weight: 0.91 kg

Best for: Pocket-bike expansion chamber.

Why it ranks #6: Designed for 47cc and 49cc pocket bikes, its traditional expansion chamber and angled layout target that narrower replacement use.

A rear expansion chamber is the defining feature of this WEIYINGSI exhaust, which is described as lowering noise while giving 47cc and 49cc pocket bikes a power boost. Its angled layout is also identified as supporting easier installation and a better fit on listed pocket bikes and mini dirt bikes.

The traditional rear expansion chamber is specified for 47cc and 49cc two-stroke pocket-bike engines, with the product also described for pocket rockets and various kids' dirt-bike models. WEIYINGSI connects that chamber with lower noise and increased speed and power, offering buyers a stated operating benefit beyond replacement. Its bent or angled design is intended to ease installation and improve fit, while the 39-millimeter outlet connection gives a useful measurement when assessing the exhaust setup.

Skip it if you have a 66cc–100cc engine; MBGYL's flexible exhaust is listed for that broader small-engine range.

Pocket-bike and mini dirt-bike owners with a 47cc or 49cc two-stroke engine can consider this angled expansion-chamber pipe for the stated noise and power benefits. Its stated engine range is the key fit boundary.

Listed on Amazon as: 2-Stroke Muffler Exhaust Pipe with Expansion Chamber – 1 PACK

#7

7. FLYPIG Yamaha Jog Exhaust

• Compatible with Vehicle Type: Scooter
• Weight: 2.45 kg

Best for: Yamaha Jog replacement.

Why it ranks #7: A complete muffler assembly specifically replaces listed Yamaha Jog 50cc 2-stroke models, making it a focused scooter choice rather than a universal pipe.

A complete muffler assembly for Yamaha Jog 50 scooters with 1E40QMB or Minarelli-style two-stroke engines gives owners a direct replacement option for specified models. Its stated top-end performance benefit and restrained, distinctive exhaust sound make it relevant to riders seeking both a replacement system and a change in running character.

The complete exhaust assembly is listed for Yamaha Jog 50 models 3KJ, 3RY, 4JP, and 4LV, as well as 1E40QMB and Minarelli-style two-stroke engines. That defined compatibility helps Jog owners narrow the choice to a system intended for their scooter family. FLYPIG says the pipe produces more power for greater top-end performance, while its sound is described as not too loud for most people. The ST12 steel construction gives buyers a specified material to consider for replacement use.

Skip it if you need an exhaust for a mini dirt bike rather than a Yamaha Jog; YLQYYH's 47–50cc mini dirt-bike pipe is the more relevant application.

A Yamaha Jog 50 owner seeking a complete replacement assembly and the stated top-end benefit should consider this FLYPIG pipe. Its compatibility is model-specific, so buyers outside the listed Jog and engine applications should look elsewhere.

Listed on Amazon as: FLYPIG Exhaust Muffler Pipe for Yamaha Jog 50 3KJ 3RY 4JP 4LV 50cc 1E40QMB

#8

8. YLQYYH Mini Motorcycle Exhaust

• Compatible with Vehicle Type: Bike,Motorcycle,Atv,Car
• Outlet Connection Size: 38 millimeters

Best for: Mini quad and pocket-bike use.

Why it ranks #8: The expansion-chamber pipe fits listed 43cc–49cc mini motorcycles and gives a 640mm total length plus 38mm bolt spacing.

A 640-millimeter total length and 38-millimeter bolt spacing give this YLQYYH expansion-chamber exhaust concrete fit measurements for mini vehicles. It is listed for 43cc, 47cc, and 49cc pocket choppers, quads, dirt bikes, pit bikes, and ATVs, with claimed improvements in throttle response and power.

The exhaust is listed for 43cc, 47cc, and 49cc mini pocket choppers, quads, dirt bikes, pit bikes, and ATVs, making its stated applications broader than a single mini-bike type. Its approximate 640-millimeter length helps buyers assess available space, while the 38-millimeter bolt spacing gives a mounting measurement to compare. YLQYYH says the expansion-chamber pipe aims to improve throttle response and power, so its appeal combines explicit dimensions with a stated operating benefit.

Skip it if you need an exhaust for a 66cc–100cc motorized bicycle; CDHPOWER's CDH-88 is listed for 66cc, 80cc, and 100cc gas kits.

This YLQYYH pipe suits owners of listed 43cc–49cc mini quads, pocket bikes, and dirt bikes seeking the stated throttle and power benefits. Its 640-millimeter length and 38-millimeter spacing are important fit boundaries.

Listed on Amazon as: Mini Motorcycle 47cc 49cc 2 Stroke Rocket Car Engine Pocket Bike Mini Quad Exhaust Pipe Muffler with Expansion Chamber

#9

9. CDHPOWER CDH-88 Chamber

• Compatible with Vehicle Type: Bike
• Outlet Connection Size: 40 millimeters

Best for: 40mm-stud-spacing bike kits.

Why it ranks #9: Its 48cc–100cc engine range and 40mm stud spacing are useful checks, but the listing warns that the surface may have scratches.

A stated 40-millimeter, or 1.56-inch, muffler stud spacing makes the CDHPOWER CDH-88 easy to assess against compatible two-stroke gas-bike kits. Its 370-millimeter chamber length and 105-millimeter width also give buyers specific dimensions for judging the expansion chamber's physical fit.

CDHPOWER lists the expansion-chamber muffler for 48cc, 66cc, 80cc, and 100cc two-stroke gas motor kits. The 1.56-inch, 40-millimeter stud spacing helps buyers compare its mounting points with a kit, while the 370-millimeter length and 105-millimeter width help assess available space on the bike. These measurements make fit planning more concrete, although the supplied facts do not describe a flexible section or state a particular noise or power improvement.

Skip it if you need adjustable exhaust routing; FVRITO's Viper pipe has a flexible section and bendable silencer for different mounting angles.

This CDHPOWER chamber suits gas-bike kit owners who can use its listed engine range and want mounting and chamber dimensions for fit planning. Its fixed dimensions and surface-scratch notice are relevant considerations before installation.

Listed on Amazon as: CDH88 Muffler Exhaust Expansion Chamber, Colorful

#10

10. YLQYYH Mini Dirt Bike Muffler

• Compatible with Vehicle Type: Motorcycle
• Outlet Connection Size: 39 millimeters

Best for: 50cc mini dirt-bike replacement.

Why it ranks #10: This is a narrow mini dirt-bike option for 50cc applications, with 39mm bolt spacing; the listing advises checking size before purchase.

A listed 50cc mini dirt-bike application makes this YLQYYH muffler a narrowly focused replacement option for small off-road motorcycles. Its specified 1.53-inch bolt spacing gives buyers a concrete mounting measurement to check, while the title also identifies 47cc, 49cc, and 50cc two-stroke mini-bike use.

YLQYYH identifies this exhaust pipe muffler for a 50cc mini dirt bike and describes the application as a 47cc, 49cc, or 50cc two-stroke off-road motorcycle or pit bike. The listed 1.53-inch bolt spacing, also specified as 39 millimeters, gives a practical mounting measurement to compare with the bike. Unlike flexible exhaust listings, the supplied facts do not describe adjustable routing or a performance change, so its appeal is chiefly the stated mini-bike application and size information.

Skip it if you need a flexible pipe for several engine angles; FVRITO's Viper listing specifically describes a flexible expansion section and bendable silencer.

This YLQYYH muffler is for buyers replacing an exhaust on a listed 47cc–50cc mini dirt or pit bike. Its key fit detail is 1.53-inch, or 39-millimeter, bolt spacing; broader performance claims are not provided.

Listed on Amazon as: Exhaust Pipe Muffler For Mini Dirt Bike 2-Stroke 47 49 50cc Motorcycle Off Road Motorcycle Pit Bike