The SRAM 2012 RED WiFLi features a longer cage and gets a slight variation in geometry to accommodate an 11-32 cassette. This provides the lower gearing range of a triple crank but with much lighter weight, quicker shifting and less wide Q-factor.

SRAM achieves silent shifting thanks mainly to refining the tooth geometry of the new AeroGlide jockey wheels. A new pulley cage works to more precisely manage the chain. Even though the pulleys are newly designed, they retain the ultra-smooth, Blackbox ceramic bearings to reduce drivetrain friction to a minimum.

Other improvements include more clearance with a 32t cassette due to the addition of a longer B knuckle. A new spring-fixed barrel adjuster gives a lighter action while fine-tuning. The Red rear derailleur was already lighter than seems possible at 167 grams but SRAM just had to add a hollow titanium pinch bolt.... Read More