Crupi Quad BMX Hub Set-Black-28H Tripod Seats Standard insole: Adaptable cup insole

Standard insole: Adaptable cup insole

Features replaceable grip pins

14mm chromoly center axle with 3/8" bolts

TIRE FIT: 20x11/8" and 20x13/8"

laser cut through hole for 20mm axle hubs

Crupi Quad BMX Hub Set-Black-28H Tripod Seats Standard insole: Adaptable cup insoleThe Crupi Quad BMX Hub Set Black 28H features a new alternative design which is similar to instant engagement but without the higher cost. The Quad has 150 ratchet teeth that engage every 2. 4 degrees with 4 pawls (3 pawls in the 28H hub). Four cog spacers are still included, allowing you to position the cog where it provides the best possible chain alignment. The hubset comes with a 16t cog but is designed to work with any Shimano compatible cog and