Front shifting quality on SRAM's AXS road drivetrains comes down to the interaction between the chainrings and the Flattop chain, which is why SRAM builds the Rival AXS E1 2x chainrings as a one-piece construction that eliminates the spider and improves shift performance and power transfer . It's the same approach SRAM uses across the Force and Red AXS chainring lineup — one solid piece of aluminum instead of separate inner and outer rings bolted to a spider — and it's what gives the front derailleur consistent, predictable shifts under load.

The kit fits 8-bolt direct mount SRAM Rival, Force, and Red crank arms , so if you're running any of SRAM's current E1-generation AXS road cranks, these drop straight on. Torx T20 bolts are included , and installation is a matter of pulling the old rings, cleaning the mounting interface, and torquing the new set to spec. There's no BCD to measure and no chance of clocking the rings wrong — the 8-bolt pattern indexes in one position.

Two gearing options cover most road use cases. The 46/33T setup gives you tighter jumps and easier climbing ratios for hilly terrain or riders who don't need a 50-tooth big ring. The 48/35T is the more traditional road gearing that matches what SRAM specs on most complete Rival bikes, better for flatter routes and faster group rides. A 13-tooth delta between the rings keeps cadence changes manageable during front shifts , and both configurations pair with SRAM's standard AXS cassette range from 10-28T through 10-36T.... Read More