Wolf Tooth Direct Mount Chainring for SRAM 30T Mountain Cranks 8-Bolt

Our new SRAM 8-bolt mountain crank direct mount chainrings are optimized for new SRAM Transmission mountain groupsets and T-type chains. They're for those with the latest SRAM T-type Transmission groupsets who want to go beyond stock chainring sizes or who want improved performance with our American-made, optimized tooth profile. The 3mm offset is for SRAM MTB cranks with DUB WIDE spindles, which already have the 55mm chainline required for SRAM T-type Transmission groupsets. The 0mm offset is for SRAM XX1 SL cranks with DUB spindles to move the chainline from 52mm to 55mm. Compatibility: These direct-mount chainrings replace existing chainrings and spiders or direct-mount chainrings for SRAM T-type transmission cranksets and other SRAM cranks that use the 8-bolt standard. SRAM T-type transmission DUB Wide MTB cranksets use the 8-bolt direct-mount standard. Wolf Tooth's patented Drop-Stop B wide/narrow tooth profile provides ultimate chain retention and mud evacuation. Available in 3mm and 0mm offsets. 55mm chainline at 3mm offset for DUB Wide MTB, 0mm offset for DUB. 52mm chainline at 3mm offset for DUB. Drop-Stop B works with all SRAM Eagle, SRAM Road and Transmission (T-type) Flat Top chains, 9-, 10-, and 11-speed chains, or 12-speed KMC, Connex, Wippermann, and Campagnolo. DROP-STOP B Integrated HS compatible with Deda DCR system (internal cable routing) Compatible with Deda Alanera, Vinci and Superbox Top cover not included Allows perfect integration of cables through the headset Model: Integrated 1.5" - 1.5" angular contact bearing Material: Chrome plated steel Weight: 80g Bearing dimensions: Upper (51.9 x 40 x 8mm), Lower (51.9 x 40 x 8mm) Contact angle: Upper: 45° x 45° Lower: 36° x 45° Fork column: 1 1/8" (28.6 mm) - 1.5" (38.1 mm) Head tube: 56 mm Height: 9.6 mm (8.8 + 0.8) Compatible with 56 mm frame tubes and 1.5" bearings Compatibility: 9, 10, 11, 12-speed SRAM Eagle, 12-speed SRAM Transmission (T-type) Flat Top, 12-speed Campy, 12-speed KMC. Not compatible with 12-speed Shimano HG+ chains.