toalco-kdx
Member
- May 16, 2002
- 282
- 0
Im looking at a used '99 yz 250 and the owner said he had a high compression head put on and that compression was 240Psi. i was just wondering if that will wear down the piston faster and if i would need to run race gas? he said he has never done a top end and that he just used it for trail riding. it has a pro circuit pipe and silencer..if that makes a difference for race gas.