Takegawa's S35 full race cam for the 138cc +R race head. This cam is not meant for the dirt applications and will not yeld good result. Designed for FULL ROAD RACE applications, works great for motard racers. Delivers the most top end HP but operates in a very small power band. More lift and longer duration with more over-lap make this a great solution for road racing but is not a good all around performance cam for the average rider.