We finally have our BIG BOY 222cc kits in! 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 our XR150L Big Bore Installation Guide