Sram Rival 12spd Chain Muna They are constructed from alloy

They are constructed from alloy and use DU bearings that pedal like a seal bearing

Stronger racers are now free to choose larger chainrings for more top-end speed

Shimano's second-tier road groupset gets 12-speed gearing and wireless shifting

HAT AND HELMET FIT TEMPLES - O-Matter™ temples have been designed to be low profile to fit with hats and helmets

The SHIMANO ALIVIO M3100 rear derailleur delivers a low profile design that lets you ride aggressively with fewer interruptions thanks to its SHIMANO SHADOW design

Sram Rival 12spd Chain Muna They are constructed from alloyThe Flattop technology of the SRAM Rival chain creates a lighter, quieter, stronger chain thats compatible with 12 speed 1x and 2x eTap AXS drivetrains. Ride far, long and fastthis chain can go the distance.