Same-day shipping cutoff: Noon Pacific Time

Athena

Model
WR250R '08 - '18 WR250X '08 - '11
  • Kit includes aluminum cylinder with nickel-carbide coating designed with larger water jackets
  • Specially designed, high performance, hard anodized power valves (cannot use OEM)
  • Forged piston with molybdenum coating
  • Does not include cylinder head.

You will need to tune your EFI with something like the Power Commander V to get the most out of your Big Bore kit.

Add EFI Programmer, Dynojet Power Commander 6
Ships in 3-5 business days
$1,134.95
DRZ400 '00 - '26 DRZ400S '00 - '26 DRZ400E '00 - '26 DRZ400SM '05 - '26
  • 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