Kitaco SE-R racing camshaft for XR100R CRF100F NSF100 with SE-Pro and SE2-Pro heads. Longer duration camshaft option for racers looking for added mid-range. Kitaco also calls this their Endurance cam. Specs as follows:

• IN Open 20° BTDC Close 55° ABDC
  
• EX Open 60° BBDC Close 18° ATDC