Takegawa has outdone themselves with the 4V Superhead line of bore kits for the CRF50 Monkey bikes. 124cc bore and stroke kit with auto decompression technology, forged aluminum roller rockers, two 21.5 intake valves, two 18.5 exhaust valves. Available in two configurations:
All 124cc 4V bore and stroke kits come with 15/20D decomp camshaft. 20/25D and 25/30D race camshafts available.
- V cylinder/two point crankshaft - discontinued
- HA cylinder/two point crankshaft
- V cylinder/three point crankshaft - discontinued
- HA cylinder/three point crankshaft