The Flattop technology of the Sram Rival chain creates a lighter, quieter, stronger chain thatÂ’s compatible with 1x and 2x AXS drivetrainsFlattop technology allows for a narrower chain with quieter operation and increased strength and durabilityIncludes Flattop PowerLock12sp1/2x3/32120LFlattop PowerlockSilverUPC/EAN/GTIN: 710845862946