Have you been holding your breath waiting for this product to arrive? Wait no longer! This is the biggest bolt on kit on the market, and its $60 less than smaller cc kits. This will absolutely transform your bike into a thumper.

You can also select "Notify Me" from our app, and you'll get an app notification when they're restocked, as well, if theyre out of stock.

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This is the kit that put down nearly 17whp, up from 8whp on the dyno., HUGE torque gains, no machine work. 70mm piston. Comes with everything you need.

THIS KIT DOES REQUIRE CARB JETTING

CAM HERE

JET KIT HERE

POD FILTER HERE

Here's a link to a PDF of ourXR150L Big Bore Installation Guide