Port 86-89 TRX250R Ported Cylinder Porting 66mm - 69mm Top End Rebuild Cool Head
- Used OEM Honda cylinder with a new sleeve installed and honed to the piston (66mm up to 69mm)*
- Full race port and polish
- Wiseco Forged piston
- Nitrite-coated piston rings
- Chrome wrist pin
- Circlips
- SKF wrist pin bearing
- Mod Quad Billet cool head
- Billet cool head dome
- Cool head o-rings
- Talon TITANIUM cylinder head studs - LIFETIME WARRANTY*
- NGK spark plug
- Runs on pump or race gas
- Drop in kit no machining required
- Works on all '85-86 ATC250R and TRX250R models
**PLEASE NOT THAT DEPENDING ON AVAILABILITY THE BORE SIZE MAY BE MOVED UP TO 69mm IN 0.5mm INCREMENTS**