High precision billet steel RB crank drive collars. Australian manufactured with CNC wire cut technology, and extreme close tolerance internal bore and meshed outers for 100% reliability not only in fitting the collar but in its use with the usual PRP Lifetime warranty.
High polished ultra-fine finish, and available in both spline drive (common with both PRP Direct replacement gear sets and new billet oil pump) and OEM Flat drive.
PLEASE NOTE :
OEM flat drive works with all aftermarket oil pump gears.
The spline drive only works with Platinum Racing Products spline drive oil pump gears only.
Grub screws are not required, 3 thou interference fit with good quality materials do not require grub screws.