Suzuki RM250 1996-2000 Phathead cylinder head kit Combustion chamber:S23 18.2cc 100+ octane XR80/XR100 88-00

XR80/XR100  88-00

Throttle bottle injected model

Y32 -  (100+ octane)

KX250 99-04

1999-2022 big bore chambers:

Suzuki RM250 1996-2000 Phathead cylinder head kit Combustion chamber:S23 18.2cc 100+ octane XR80/XR100 88-00Suzuki RM250 Phathead cylinder head kit 1996 2000 Chamber selection: S21 20. 6cc Stock S22 19. 2cc (95+ octane) S23 18. 2cc (100+ octane) S24 17. 6cc (105+ octane) Phathead Kits include a head shell with one combustion chamber, two sets of o rings, cylinder head nuts, copper washers, some stickers for your bike and tool box and installation instructions.. Phathead cylinder heads are made of 6061 T6 billet aluminum. The material is stronger and