The SRAM RED Rear Derailleur has been designed to deliver the performance advantage you‘ve come to expect from SRAM. With WiFLi, the rear derailleur lengthens its cage and gets a slight variation in geometry to accommodate an 11-32 cassette. The new range of gears is wider than the standard triple chainring system and saves well over 250 grams.
We‘ve paid rapt attention to the finer details, like adding a hollow titanium anchor bolt and even refining tooth geometry of the jockey wheel. The result is that the chain runs through the new RED Rear Derailleur smoother and quieter than ever before.
AeroGlide Pulleys: New tooth pulley design with a sound damping effect for a super efficient and silent ride experience. Bottom and top pulleys benefit from this feature.
Exact Actuation: When we launched our road technology from scratch we reapplied our MTB proven SRAM 1:1 actuation ratio (shifter cable travel : derailleur movement) for 10 speed rear shifting. EA helps to simplify/stabilize the uneasy act of balancing rear derailleur hanger design, tight cog spacing and exact cable tension. The result: the easiest index shifting system to set up and it stays that way.
WiFLi™ = Wider - Faster - Lighter
SRAM's WiFLi™ Technology is based on the compact 2 x 10 - two front chainrings and 10 gears in the rear - design inherent in SRAM Apex and Rival, which delivers a wider range of gears than your standard triple, faster shifts through two chainrings and 10 gears, and with significant weight savings. It's the newest technology from the company that continues to innovate the cycling experience.
Wider – a wider range of gears for every climb and any descent
Faster - two chainrings shift (and set-up) much faster and more easily than three
Lighter – as much as 274g (9.8%) less than the most popular road triple
Much improved Q-factor - improved heel clearance
Easier set up - two is easier than three
Compatible with SRAM Red, SRAM Force, SRAM Rival and SRAM Apex
Exact Actuation shifting provides fast, accurate shifts
32T clearance thanks to the mid cage design: widest gear range available
New silent shifting with optimized AeroGlide lower pulley, ceramic bearings
New spring-fixed barrel adjuster
New chain pulley cage adds precise chain management
Titanium pinch bolt keeps a low profile while minimizing weight
Material: Carbon Inner Links, Carbon Cages, Aero Designed Titanium Hardware
Compatibility: 32T max cassettes
Cage Sizes: Mid cage
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