Description
Honda CR125 2005 2007 Phathead cylinder head kit Color:purple The two piece design allows ECU remap required for CR125R9302 yz65 Chamber selection:H31 20.5cc 95+ octane The two piece design allows an increase in coolant flow as well as surface area which improves cooling for better consistency and performance Y110 Big bore +2mm Hot Rods stroker crank 4134