DetailsRed TT Chainring:~ SRAM's TT Chainrings are stamped from 7075 aluminum for low weight and excellent strength. The teeth are ramped and pinned for precision shifting, too.
- • TT: Time Trial rings with added reinforcement for strength and special graphics on the outer ring.
- • 7075-T6 aluminum with black hard anodized finish (2012+ replaces TGA Tungsten grey) and timed ramps/pins for optimized shifting performance.
- • 133 mm Bolt circle diameter.