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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Big Bore Kit - 440cc, Athena

CARB   WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
DRZ400 '00 - '25 DRZ400S '00 - '25 DRZ400E '00 - '25 DRZ400SM '05 - '25
  • Includes aluminum cylinder, piston kit, and special gasket set designed for larger water jackets
  • Bolts on with no machining required
  • 94mm big bore piston
  • Aluminum cylinder designed with wider water jackets for better cooling.
  • Forged hi-compression piston  12.8:1
  • Includes all necessary Rings, Clips, and Gaskets.
Ships in 3-5 business days
$937.95