Shimano 12-speed cassettes are backward compatible with its 11-speed freehubs. The Rival AXS rear derailleur uses a spring clutch that improves chain retention over rough surfaces and keeps the drivetrain quiet and free of chain slap. In its place is a design that has both chainrings machined out of one block of material that mounts directly to the crank arms on a spline, which is a design mountain bikers have had for a few years now. SRAM Rival eTap AXS vs Force vs Red | The Pro's Closet SRAM's eTap AXS components, in contrast, are wireless. New SRAM Force AXS & XPLR Groups Get Streamlined Updates Beyond these changes, little things like improved texture on the shift paddles and visual refinements add up to a group that offers a drastically improved experience. Also, Ive already built 3 different bikes with the group and have yet to run into compatibility problems. Note:Di2 weights do not include wiring/junction box/battery. The harsher the bump, the more resistance it applies to keep the chain under control. Prior to that, Tyler launched and built multiple sports nutrition brands and consumer goods companies, mostly as an excuse to travel to killer riding locations throughout North America. 36T: 36T=5mm / 33T=5mm / 30T=10mm / 28T=12mm (chain in largest sprocket) Cycling activity Bidex Code 202110 Category Road Main . Colour: rainbow. Every review of axs so far is pure fluff. Enter the roll-up tool bag. The bike suitable for a body size of 163-173 cm. This is how you discover new territory off the beaten track. According to srams website, when that happens, they will discount it by 50% but its still seems like added complexity when a spider based system works fine. The principle behind the damper is that the faster it moves, the more the resistance builds. However, Shimano still attaches the chainrings using bolts, although we've certainly never noticed any amount of flex. The hood shape for the Rival eTap AXS shifter has changed to a narrower grip than Force or Red. The rear mech on the AXS has also had an upgrade. Already have an account with us? The SRAM RED eTap AXS rear derailleur is AXS enabled for easy personalization and designed for both 1x and 2x systems. SRAM Red eTap AXS and Shimano Dura-Ace are both now 12-speed and electronic only and both have wireless comms between the shifters and the derailleurs. SRAM Red eTap AXS changed the way we think about gear ratios. Real weight for the 1x Red eTap AXS full crankset including the 40T chainring is 510g. Will that luster hold up?