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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.  

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Model
Year

Big Bore Kit - 195cc, BBR

WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
CRF150F '06 - '25

High quality bore kit that shows substantial power gains throughout the RPM range. 65mm piston. 9.8:1 compression ratio allows use of premium pump gas. Complete kit includes: cylinder, piston, ring set, pin, clips and gaskets.

  • All new design
  • Brand new high quality BBR aluminum cylinder
  • 9.8:1 compression ratio
  • 65mm piston
  • Includes cylinder, piston, pin, rings, and gaskets
Please contact us for availability information
$279.95

Big Bore Kit - 175cc, BBR

WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
CRF150F '03 - '05

Big bore kit for the 2003-2005 CRF150F. A simple bore in bore kit that includes BBR's high performance camshaft and valve springs for added performance. This cam features higher lift and duration than stock. Complete kit includes piston, rings, pin, clips, BBR MX cam, valve springs and gaskets. This is the quickest way to add the most power to your bike. Great when combined with our exhaust system, Rev-Box, and Free-Flow airfilter. Requires machining of stock cylinder for installation.

  • Adds up to 3.5 HP
  • 67mm piston, pin, clips, and rings
  • 10.75:1 compression ratio
  • Includes head and base gaskets
  • Makes more aggressive style of power
  • Bike still starts easily and idles smooth
  • Same camshaft as used by the BBR Race Team
  • Requires professional boring of your stock cylinder
Ships in 3-5 business days
$299.95