For 12-speed, Aluminium Number of teeth 42 Type of article Attachment Direct Mount Area of use Road Group affiliation SRAM Main colour black Secondary colour silver Rear gears 12-speed Front gears 1-speed This SRAM RED chainring is super lightweight and guarantees top performance. The one-piece construction ensures that none of the effort is lost. Thanks to the refined technology, durability is greater than ever. Light, stiff and durable chainring One-piece construction for faster, smoother and safer shifting X-Sync technology ensures excellent chain control X-Range sprocket technology offers more range and smoother shifting Sram Article number: Retail packaging: Yes