Chain Rings

Information from: http://www.sram.com/sram/road/products/chain-rings.

SRAM TT Chainrings come as 53,54 and 55 tooth outer rings; plus a corresponding 42 tooth inner ring (not pictured). Powered by the world’s best time trialists the past two seasons these intricately finished PowerGlide rings are vertically, strong, stiff and aero with bold 3X SRAM laser-etched, tungsten gray graphics that look wicked fast. SRAM TT PowerGlide chain rings are optimized for SRAM 42 tooth Inner rings

Specifications

Size/BCD: Outer rings: 53t/130BCD, 54t/130BCD, 55t/130BCD, Inner ring: 42t/130BCD

Material: Aluminum

Weight: 53T: 145g, 54T: 165g, 55T: 170g