Same-day shipping cutoff: Noon Pacific Time

Big Bore Kit - 675cc

XR650L '93 - '25
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

The Complete Top End Performance Kit includes:

  • 102.4mm Wiseco piston 9:1 compression (up from 8.3:1) with rings, wrist pin and circlips
  • Stage 1 camshaft for more power
  • Top end gasket set

This kit boosts your displacement from 644cc to 675cc. Your cylinder must be bored to fit the larger piston.

CARB race use only
Please contact us for availability information