Chainring: There is no chainring included but there are tonnes of options available to work with RaceFace's Cinch system

Mounting style: single lock-on clamp

SRAM GX 10 Speed Rear Derailleur is designed with EXACT ACTUATION™ technology which provides an incredibly precise shift

Easy to dial in for the perfect fit

TLD A1 MIPS Helmet - S - Matte Classic Black - Red Images Uploaded - Ready for Review Chainring: There is no chainringTroy Lee Designs has become synonymous with high end, premium helmets. Their full face models have been sought after for years and can be seen on podiums all over the world. The A1 continues this legacy, quickly becoming one of the most popular all mountain helmets on the market and it's easy to see why. An independent testing facility (Virginia Tech) even rated the A1 MIPS among the top 5 out of over 100 helmets they tested in 2019. Who's this item