Race Face Next SL G4 cranks combine CINCH versatility and compatibility with an improved arm profile that integrates with Next Direct Mount composite spiders and rings. G4 drops some of the weight while improving on stiffness. Stiffness is the key advantage here because 1x systems tend to put chains under high tension at extreme angles. Beyond being light and stiff, CINCH compatibility also adds a bit of futureproofing.
Fully hollow carbon crank arms for maximum weight savings.
30mm spline interface CNC'd from commercialized super alloy, 20% stronger than 7050 aluminum.
Fully modular construction with removable spider and spindle offers the ability to convert between existing chainring standards while remaining flexible to future developments.
Bottom Bracket, Chainrings and Spider are sold separately.
Functionally, these cranks have been great. I've been riding these for three months and hitting my trails harder than ever on my new SC Bronson including adding more launches, ramps and general air time to my style. The cranks have been solid although if you hear some creaking be prepared to re-tighten the Cinch lock ring that holds your chainring in place. Unfortunately, I encounter some unanticipated disappointments on this top-dollar product. #1) Be prepared to buy three tools you probably don't have when it comes time to do any work on your cranks: a special BB wrench, a specific lockring driver, a 16mm hex socket or adapter. #2) The graphics on these cranks are just cheap decals that shred and squeak (as your shoe's ankle cuff passed by) and don't come in stark white or bright green. #3) The available crank boots are not very tough -- my first set shredded after a couple of rides; RF did send me a second pair which is a bit tougher but wearing through and often become dislodged. I never had G3 Next cranks but their boots look thicker and tougher.
Switched to these cranks after running XTR''s for a year and couldn't be happier. Super light weight and stiff plus these cranks allowed me to run a super small 24t sprocket. Dropping my lowest gear two places! So basically as if I gained two lower gears. Love them.
While there is no Boost standard for cranks, the Q-factor (the width between the pedal attachment points) will vary. These are listed at 168mm width on the Raceface website, while their aluminum Turbine cranks are 178mm. Narrow cranks could come close to or even touch wide-spaced Boost chainstays.
No. Boost is a standard for wheel hub axles, not bottom brackets. These should fit pretty much any frame that uses a standard width bottom bracket and regular BB bearing size (i.e. not one of the bigger diameter standard BB's like BB30.)
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