With a bespoke tooth profile the Gamut TTr (Thick/Thin Race) ring is the solution for those looking for a low-friction single ring set-up but don't want to change their entire drivetrain. Alternating teeth dimensions increase chain retention, reducing the need for chain devices, especially when used in conjunction with Shimano Shadow + or SRAM Type 2 rear mechs. For riding in severe terrain or just for peace of mind, Gamut still recommend the use of a lightweight upper guide. Machined in Canada these rings are designed to work perfectly with SRAM removable spiders GXP cranks, the interface is precisely machined for a perfect fit and creak-free performance. High quality hard-anodised finish gives a smoother harder finish for decreased wear and improved chain engagement. Subtle laser-etched graphics let everyone know that you're running the best, without making a big fuss about it, let your riding do the talking. Compatible with 9, 10 and 11-speed drivetrains. Not compatible with BB30 cranks. Weight: 79 grams.