MX | ROADRACE | KARTING | MOPED
Tune your 2-stroke engine! This combination of the cylinder head and VHM 12 degree billet piston provides faster throttle response, torque and power. With our VHM high inertia crankshaft modification, the crank will transfer the high engine power output smoothly to the rear wheel, without being too aggressive. It will ensure better handling and riding for the young riders! The crankshaft modification can be performed by us on your OEM crankshaft. This modification has number: AK20161-002.
See more about our crankshaft modifications on our crankshaft modification page.
This upgrade kit contains our 12 degree VHM piston, which can only be used in combination with our special insert for 12° piston.