Because back-to-back drivetrains have firmly established themselves as a viable option in mountain conditions and cyclocross SRAM is currently in the process of expanding the one-by-one paradigm on the road with its Rival 1 group. Rival 1 GXP cranks are located in the center of the group providing perfect lines and excellent chain retention when pedaling.

While some of us at the Competitive office remain skeptical about the usefulness of a single star in mountainous regions others are willing to sacrifice a top gear or two for the weight savings and sheer simplicity of the new options. In any case, this setup is certainly promising for riders living in less aggressive topography, and may be an ideal setup allowing you to eliminate the front derailleur and save some weight for critical situations and time trials.

Connecting rods are made from forged aluminum for efficient power transfer at a much lower cost than their carbon fiber counterparts. The chainring teeth have a distinctly tall, square profile which grabs the chain earlier and releases it later as the pedal rotates than standard triangular teeth which improves chain stability and retention. The teeth also have rounded, beveled edges which help to hold the chain and minimize deflection. SRAM also takes off-road adventure into account , providing recesses helping to clear dirt.

SRAM Rival 1 GXP crankset is frame compatible equipped with GXP, with rear wheel spacing of 130 mm and 135 mm.