Same-day shipping cutoff: Noon Pacific Time

Spring time is in full swing here at ProCycle.  With these busy days please be sure to let us know if your order is time sensitive.  We try to do as much as we can to accommodate your upcoming trip.  

Big Bore Kit - 440cc, Athena

DRZ400 '00 - '25 DRZ400S '00 - '25 DRZ400E '00 - '25 DRZ400SM '05 - '25
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
  • 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