

MaxFormance Stinger Exhaust Mod Kit
For use on all original Tomos A55 exhausts except Arrow with dual headlights
Description: If you have a Tomos A55 exhaust that is plugged up or want the ability to adjust your exhaust backpressure and sound this kit is for you. Utilizing the legendary SuperTrapp three inch diffuser disc system allows for complete tunability of sound and backpressure level. No other moped exhaust system gives you this versatility. This is a modification kit to be used with the original Tomos A55 exhaust. Hack sawing and drilling one hole is required.
- Allows adjustment of backpressure & sound
- Can be disassembled for cleaning
- Works great with 70cc kits or stock engines
- Reduces total exhaust weight by one pound
- Instructions & neccessary hardware included
- Individual replacement kit parts available
- Mod kit price (#MF-A55MOD)-----$149.95
- Additional 3" diffuser discs (#304-6506)-----$2.59 each
Warning: The parts shown above are for off road use only and should not be mounted on any unit intended for legal street use. These parts may produce more power than the moped was designed for. Use at your own risk.
Tomos Performance Exhaust Systems
Description:
- Chrome exhaust with expansion chamber
- Includes hardware for mounting
- Fits A55 engine, has blue silencer (#A55-TEC-B)-----$199.95
- Fits A35 engine, has blue silencer (#A35-TEC-B)-----$199.95
- Fits A35 engine, has silver silencer (#A35-TEC-S)-----$209.95
- Fits A35 engine, has carbon fiber silencer (#A35-TEC-C)-----$209.95
Biturbo Exhaust System Kits
Increase your moped's acceleration and top speed with a high performance Biturbo Exhaust System
Description:
- Biturbo one-piece exhaust kit
- Chrome with gold silencer
- Includes exhaust pipe assembly, 2 brass nuts & exhaust gasket
- For all Tomos mopeds with A55 engine except Revival (#RA-633318)-----$139.95
- For all Tomos mopeds with A35 engine except Revival (#RA-542400)-----$109.95
- For Tomos Revival with A35 engine (#RA-440100)-----$109.95
- For Puch Maxi (#RA-542500)-----$109.95
- Replacement exhaust gasket (#RA-405100)-----$3.00
- Replacement brass nuts (#RA-430300)-----$1.50 each
Biturbo Exhaust System Replacement Parts

Baffle for two piece Biturbo (#RA-495000)-----$19.95
Insulation (#RA-495100)-----$9.95 OUT OF STOCK
Universal exhaust insulation kit (WP-05-0002)-----$8.95
End cap (#RA-495300)-----$6.95
Circlip (#RA-495400)-----$3.95
Tall brass nuts (#RA-430300)-----$1.50 each
Gasket (#RA-405100)-----$2.95
Warning: The parts shown above are for off road use only and should not be mounted on any unit intended for legal street use. These parts may produce more power than the moped was designed for. Use at your own risk.
 Note: Adding a tooth to the front sprocket will increase the moped's top speed. Subtracting a tooth will give the moped a quicker takeoff and more power for steep hills or heavy loads.
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Tomos Moped & Motorcycle Front Sprockets
Specifications: Front sprockets
- Before ordering determine if your moped has a flat or dished front sprocket
- For use on Tomos A55, A35 and A3 engines
- 25 tooth flat sprocket (#RA-425000)-----$21.95
- 26 tooth flat sprocket (#TO-209078)-----$19.95
- 27 tooth flat sprocket (#RA-427000)-----$19.95
- 26 tooth dished sprocket (#DISH26)-----$24.95
- 27 tooth dished sprocket (#DISH27)-----$24.95
NOTE FOR 27 TOOTH SPROCKETS: Some Tomos engine cases may require a slight modification (grinding out of some material) to obtain proper chain clearance toward the front of the sprocket.
 Note: Subtracting teeth from the rear sprocket will increase the moped's top speed. Adding teeth will give the moped a quicker takeoff and more power for steep hills or heavy loads.
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Tomos Moped & Motorcycle Rear Sprockets
Specifications: Rear sprockets
- 24 tooth Arrow sprocket (#24TO-ARROW)-----$19.95
- Sprockets listed below WILL NOT fit Arrow
- 31 tooth sprocket (#31TO-227863)-----$19.95
- 28 tooth sprocket (#28TO-223119)-----$19.95
- 24 tooth sprocket (#24TO-227361)-----$19.95
- 22 tooth sprocket (#22TO-222586)-----$19.95
- 20 tooth sprocket (#20RA-633084)-----$19.95
NOTE FOR 20 TOOTH SPROCKETS: Tomos wheel will require modification (machining clearance for chain). We will machine this clearance into your wheel for $32.50 plus shipping. The wheel needs to have the tire removed and the wheel bearings in the wheel.


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