Wolf Tooth 120 BCD Mountain Gravel Bike Chainrings for SRAM XX (36 Tooth, Drop-Stop A, MTB)

120 BCD cranksets were introduced with SRAM 2x10 drivetrains and are excellent candidates for a 1x conversion with our patented Drop-Stop chainrings. These rings will allow you to convert your 120 BCD crankset, like the SRAM XX and others, to a 1x drivetrain.Fits 120 BCD cranksets or 4-bolt spidersDrop-Stop technology. On a Wolf Tooths patented wide/narrow chainring, the wide side of the tooth has maximum contact on the drive side which spreads the load and improves chainring life. The narrow side allows clearance for mud and debris which reduces friction.Alternating wide/narrow tooth pattern decreases chain derailmentCompatibilityThese rings fit any 120 BCD crankset or 4-bolt spider.For SRAM cranksets you must use the stock M10x.75 bolts with a shoulder on them. These are not standard bolts and Wolf Tooth's bolts will not work with this chainring. Note that only about 3 threads will engage (same with the stock SRAM rings)SRAM is the only supplier of the M10 x .75 bolts36t is the smallest number of teeth that fits on a 120 BCDIf using a 9-speed drivetrain use a 10-speed chain (shifts and works well on a 9-speed drivetrain and fits the ring tighter for better chain retention).Chainline - 51mm for 36t and 52mm for 38t (38t is wider for more chainstay clearance)RecommendationsBefore you buy a 120 BCD ring, check to see if your cranksets has a removable spider and compatible with our direct mount rings.If you plan to ride in very muddy conditions, we recommend a chainguide or chainkeeper along with a clutch style rear derailleur for the best chain security. Without these precautions, you may experience chain drops and/or chainsuck.

• Mount type: 120 BCD
• Teeth: 36
• Weight: 54g
• Chain Compatibility: Drop-Stop A tooth profile for all 9, 10, and 11spd chains or 12spd SRAM Eagle, KMC, Connex or Wippermann chains
• Material 7075-T6 aluminum, Made in USA by Wolf Tooth Components