Same-day shipping cutoff: Noon Pacific Time

We will be leaving the office slightly earlier than usual this Friday 5/24 at 2pm (Pacific Time) and will be back in action on Tuesday 5/28 at 9:30am. We are taking a little break to enjoy some quality time with our families and to celebrate the Memorial Day weekend.

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Model
Year

Big Bore Kit - 675cc

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

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.

Please contact us for availability information
$489.95

Big Bore Piston - 675cc, Wiseco

CARB   WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
XR650L '97 - '25

Piston, Rings, Wrist Pin, Wrist Pin Bearings and Circlips included.

  • This is a 2.41mm, oversized piston, so the cylinder will need to be bored.
  • Displacement will go up to 675cc.

NOTE: A top end gasket set is required for installation.

Add Gasket Set, Top End
Ships in 3-5 business days
$268.95