TTR110

Yamaha TTR110 Big Bore Kits

Upgrade your Yamaha TTR110 with performance big bore kits from TB Parts. The TTR110 is one of the most popular pit bikes and trail bikes for kids and beginner riders — and with the right bore-up kit, it becomes a significantly stronger performer with more torque and top-end power.

TTR110 143cc Big Bore Kits

TB Parts 143cc big bore kits for the Yamaha TTR110 are the most popular upgrade for riders looking to increase displacement and power. The kit typically includes a bore-up cylinder, piston, rings, and gaskets for a straightforward installation. No frame modifications required — bolt-on performance for the stock TTR110 engine.

Performance Cams & Engine Parts

Pair your TTR110 big bore kit with a performance camshaft from TB Parts for maximum gains. Upgraded cams work in concert with the larger bore to optimize valve timing and increase power across the RPM range. Also available: cam chain tensioners, head gaskets, and other TTR110 engine components.

Fits Yamaha TTR110E & TTR110

All big bore kits and engine parts listed here are compatible with the Yamaha TTR110 and TTR110E (electric start). Confirm your year and model before ordering — contact Hard Racing at 704-799-2192 if you have fitment questions.