Titanium valve version of Kitaco's fantastic SE-Pro cylinder head for CRF100 NSF100. 38% lighter intake valve, 34% lighter exhaust, means less reciprocatiing mass and higher revs. Kit includes SE-Pro head with assembeld valve train. Cam, rockers and head covers sold separate. Can be used with any SE-Pro and SE2-Pro kits (100cc, 125cc, 145cc)