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Welcome to the TBoltUSA Tech Database! To visit our store, click here, or use the menus at the top of the page.

Front Sprockets or Countershaft sprockets
TBolt USA Tech Database!


China Pit bikes have 2 different types of Front Sprockets or Countershaft sprockets
Most Pit bikes take a Standard or smaller shaft 17mm/14mm type
YX Piranha motors
SSR 70 , 140 , 150 , 160
Pitster Pro 70 , 140 , 155
HO 155

A small number of engines
including Lifan 125cc take the LARGER shaft 20mm/14mm type

Front sprockets 


Pit bike Buying and Ownership info

Pit Bike Wiring Info

General Motorcycle Maintenance

Identifying Parts, Bikes, and Engines

General Motorcycle Troubleshooting

Pit Bike Installation Info

How Things Work

Parts Diagrams and Breakdowns

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