This bore-up kit is compatible with Honda MSX125 and Monkey 125 with original Honda cylinder head fitted. The kit comes complete with the Kitaco Type 2 camshaft, this camshaft provides more power at medium to high RPM we class this as a 'fast road camshaft'. This kit requires a upgraded I-MAP unit to function correctly which is not included in the kit. We recommend using a oil cooler in conjunction with this bore-up kit.