Spline drive is recommended as the superior choice any time you have a crank out of engine situation. 

These sets are precision close tolerance machined from quality EN36 Billet and highly polished and are recommended for hardcore rev limiter bouncing, burnouts, and 2 step type launch control type situations, they will not fail you. 

Unique new quad master spline design differentiates us from the rest of the kits on the market, as per all PRP hardware, a lifetime warranty applies.

The key with spline drive applications is the alignment, so make sure you grab yourself an alignment tool if you don’t already have one. 

RB25 is 81mm
RB25 Neo is 77mm
RB26 is 81mm
RB26 N1 is 77mm