Burgtec Thick-Thin Alloy Chain Ring - 104 BCD - Round - Black - 9-12 Speed - 34T YGroup_7033858261037 They have a Flex-Core Zone

They have a Flex-Core Zone which allows the Nylon Pad to conform to the curvature of the rim during use for maximum distribution of load

2 - 3C Maxx Speed - EXO - TR Kevlar Folding - 680g

Options are available to install and remove star ratchet and three pawl ring nuts

Who's this item for: This tyre is best suited to XC riders looking for a fast tyre that is optimised for use on fast

Burgtec Thick-Thin Alloy Chain Ring - 104 BCD - Round - Black - 9-12 Speed - 34T YGroup_7033858261037 They have a Flex-Core ZoneKeep that chain in place where it should be with a Burgtec Thick Thin Chain Ring. Designed with a proven thick thin tooth profile for improved chain retention. Who's this item for: Riders who use 1x drivetrains and are looking for superior chain retention as well as durability. Mounting style: 96 64mm PCD Weight: 56g (30t) Pros: Wide range of tooth options. Works for 9, 10, 11, and 12 speed setups. Great build quality. Cons: Oval options not available