Labor Day Sale | Get Up to 60% Off & Stock Up for the Long Weekend! Shop Now
CLOSE
Shipping to US Flag United States
Free shipping over $79
My Ride: 2019 KTM 125SX
ENDS TODAY! Free 2-Day Shipping on Orders Over $99 with Code RIDEUSA Shop Now

Dirt Bike Big Bore Kits

Refine

6 Results

Exact Fit
New
$32 Fast cash

Cylinder Works
Standard Bore Cylinder Kit

$1009.76
Sale
Save 15%
4 out of 5 stars (12) reviews
Exact Fit
$14 Fast cash
Exact Fit
New
$30 Fast cash

Cylinder Works
Cylinder

$888.20
Sale
Save 5%
4.5 out of 5 stars (29) reviews
Exact Fit
$10 Fast cash
Colors for VHM Billet Cylinder Head

VHM
Billet Cylinder Head

$294.99
Exact Fit
$3 Fast cash
Exact Fit
New

Dirt Bike Big Bore Kits

Install a big bore kit for optimum power in your dirt bike to tackle the roughest terrain, gnarliest hills and get an edge on the competition. Find a wide range of dirt bike big bore kits at MotoSport that fit many makes, models and years including CRF125f and other 125cc pit bikes. When deciding on a big bore kit for your ride, use the Fitment Expert on the product page to ensure the right big bore kit for your dirt bike. Most big bore kits include a cylinder, piston, ring(s), pin, clips and to p-end big bore gasket kit. If you want help finding the right big bore for your dirt bike please call 503-783-5645 to talk to a gearhead who can answer questions and point you in the right direction so you can make an informed buying purchase.