RRP 1337 48P Hard Coated Aluminum Pinion Gear, 37T

The "Pro" Pinions are precision machined from aircraft aluminum, lightened and then they're coated twice with a super hard, black anodize. Recommended for onroad, but they can be run off road. Pinions (14 thru 35) stamped with tooth number. 1/8 inch bore. One 5-40 set screw included.