The Original one and only absoluteBLACK premium Sram compatible Direct mount BOOST148 1X Oval chainrings are designed for GXP and Long BB30 spindle cranks. Chainring is dedicated for Boost148 bikes ONLY. Converts a regular Sram crank into a Boost specific setup. (3mm offset). They are also 100-percent optimized for Eagle.
Compatibility: SRAM XX1, XX1 Eagle, X01, X01 Eagle, GX Eagle, X1, X0, X9, X7, S2210, S1400 and Truvativ AKA cranks. GXP and Long spindle BB30. BOOST148 bikes ONLY. 9, 10, 11 and 12spd Eagle compatible.
Materials: CNC machined 7075 Txxx Aluminum. Long-lasting construction
Chainline: 52mm BOOST148 specific chainline. 3mm offset
Mounting: Direct Mount
Ovality: Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent Pending