The Original one and only Absolute Black premium SRAM compatible Direct Mount BOOST 148 1X Oval chainrings are designed for GXP and Long BB30 spindle cranks. Chainring is dedicated for Boost 148 bikes ONLY. Converts a regular Sram crank into a Boost specific setup. (3mm offset). They are also 100-percent optimized for Eagle.

Size (Weight):

• 28T (50g)
• 30T (55g)
• 32T (59g)
• 34T(66g)
• 36T (74g)

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&deg after TDC (top dead center) Patent Pending

Advantages of Oval chainrings:

• Finest design to provide excellent weight to strength ratio
• One of a kind special oval shape (Patent Pending)
• Unique Patent Pending narrow-wide teeth profiles to keep your chain in place for minimum 12 months!
• Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically
• Designed to handle mud and grass with easy
• Superb quality and great look.
• You will ride faster using ovals. If you keep using round ring then others will get quicker.
• Reduces stress on knees and helps to maintain your legs fresher for longer.
• You will not "feel" the oval shape at all.