Information Supplier Info The Deore XT SM-CRM85 chainring for SHIMANO FC-M8100/8120/8130 MTB cranks provides best chain retention on rough terrain thanks to the optimised Hyperglide+ tooth profile and DYNAMIC CHAIN ENGAGEMENT+ (DCE+). In addition, the special design of the teeth ensures low friction for low wear and optimal power transfer. When used in combination with the 12-speed SHIMANO XT cassette the chain moves silently and smoothly over cassette and chainrings. As you can choose from 28 to 36 tooth chainrings, XC, enduro and marathon riders are sure to find the right chainring size for different terrain. The XT chainring is bolted to the Direct Mount crank with a BB lockring. Details: For 2x12 / 1x12 SHIMANO shifting systems Hyperglide+ DYNAMIC CHAIN ENGAGEMENT+ (DCE+) Specs: Material: steel / carbon fibre reinforced plastic / aluminium Direct Mount chainring SM-CRM85 For chainline: 52 mm / 55 mm / 56.5 mm (standard, BOOST & SuperBOOST) Suitable for FC-M8100 / FC-M8120 / FC-M8130 Hollowtech II cranks BB lockring (lockring NOT included) Compatible with SHIMANO 12-speed Hyperglide+ chains, such as SHIMANO CN-M8100