Shopping CartCLOSE
  • Your cart is empty.

Dirt Bike Big Bore Kits

Refine
22 Results

Most Recent Big Bore Kits Reviews

Athena Big Bore Kit

Athena Big Bore Kit

Roger21 - Tri cities Washington Awesome kit "Great kit really easy to install, I put it on my 07 CRF250R along wth a complete lower end rebuild, and stage 2 hotcam and it rips! Took some of the top end speed out so you’ll need a rear sprocket with less teeth good kit so far and seems high quality"
See all reviews for this product
Athena Big Bore Kit

Athena Big Bore Kit

Jerbo - Santa Rosa, Ca. Awesome "Fun to install and what an incredible change in performance!!!! The sound of the engine is a much deeper tone. Great for someone who doesn't necessarily know alot about engines. Follow the instructions and feel like you own your engine and its capability. It's very enpowering."
See all reviews for this product