Keen observers may have spotted updated versions of Race Face's SixC carbon cranks on Santa Cruz's new Nomad earlier this summer, but this week marks their official debut at Crankworx Whistler. What's different about the new version of these made-in-BC cranks? The addition of the Cinch System is the biggest news, bringing a greater level of versatility by allowing riders to choose from either a direct mount chainring, a spider mounted single ring, or a 2x setup with a bashguard. The spindle is interchangeable as well, meaning that with the purchase of a second spindle the same cranks can work with either a 83mm or 68/73mm bottom bracket. The crank arms themselves are completely hollow, constructed from carbon fiber that's sourced from the United States before being laid up in Race Face's Burnaby, British Columbia facility. According to Race Face, the layup and actual shape of the arms has been altered slightly from previous versions to boost their overall strength, and the pedal inserts are now constructed from the same alloy as their Atlas DH cranks. | Details • Intended use: DH / AM / Enduro • Carbon fiber arms, aluminum 30mm spindle available in 68/73mm and 83mm • Removable spider • Sizes: 165, 170, 175mm • BB options: BSA30 (68/73 & 83), BB92/BB107 press-fit, PF30/PF30-83 • Ring options: Direct mount N/W single ring, 2x with bash, 2x no bash • Weight as tested: 539g (175mm cranks, 68/73mm spindle with 32t direct mount ring) • MSRP: $499.99 USD (cranks w/DM ring, no BB) |
Race Face's Cinch system allows the SixC cranks to be set up in nearly every configuration imaginable, and even the spindle can be changed to accommodate different bottom bracket sizes.
Installation of the SixC cranks was trouble free, which is what we've come to expect from Race Face's latest Cinch System offerings.The threaded external bottom bracket we used with our test pair does require the use of a BSA30 tool for installation, which is different than what a standard external bottom bracket uses, but it's common enough that most shops should have one. We have noticed that the larger extractor bolt on the driveside crankarm could use a torque check and a drop of Loctite to prevent it from backing itself off, but that should only take a minute or two. Crank arm stiffness isn't something that you typically think about during a ride, and the difference between two cranksets can often be muted by six inches of suspension and wide tires, but from the very first pedal strokes it was immediately apparent that the SixC cranks were much stiffer than the mid-range aluminum cranks that they replaced. After putting hundreds of miles and plenty of air time on them, these cranks have proven to be rock solid, without any flexing during hard pedalling efforts or when landing large drops and jumps. We haven't had to touch them other than to make a few preload adjustments on the first couple of rides - since then they've steadfastly done their job without even a creak of complaint. They've shrugged of a fair number of solid hits against rocks as well, suffering only a few surface scuffs where we expected to see much worse results. It's easy to see this becoming the crank of choice for enduro and DH racers looking to shave some grams without sacrificing strength, and while this level of quality doesn't come cheap, in this case you get what you pay for - a set of versatile, downhill worthy cranks at an incredibly light weight. - Mike Kazimer |
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Elegant too
- "The BSA30 tool needed for installation is different than what a standard external bottom bracket uses, but it's common enough that most shops should have one." Ok, I've just read that Rotor and Zipp, 2 companies that provide road bike stuff, also use this "standard". But why not use the perrfectly working standard Shimano, Truvativ, Straitline, ChrisKing, Hope, Acros, etc. use for X-Type bottom brackets? I don't carry a BottomBracket tool with me on multiday tour in the alps. And I seriously doubt that most bikeshop you come across have the tool necessary for RaceFace. Congrats. That seems just plain stupid to be, cause there is very little chance you get the necessary 30lbs from some ghetto improvised tool in case you need it. Also, I'm not keen to buy another tool for home repair, too.
- "We have noticed that the larger extractor bolt on the driveside crankarm could use a torque check and a drop of Loctite to prevent it from backing itself off, but that should only take a minute or two." The most charming way of saying "The driveside crankarm loosened, a thing that actually should not happen following correct installation."
Other than that, it really sounds like a sweet crank.
As for why you can't just use a standard tool- have you seen the size of the Cinch BBs? That's the size they need to be to accommodate a 30mm axle, so a standard x-type tool simply wouldn't fit.
I'm not sure what your point is about not carrying a BB tool while on multi-day trips in the alps. Nobody else does, because it's very unlikely that you'll need one (providing you installed your BB/Crank correctly in the first place)
Regarding the bit about the extractor bolt- I think you've read that wrong. An extractor bolt is simply that- an extractor bolt, used for removing the crank. Anyone who knows anything about RF cranks could tell you that this bolt does not hold the crank in place, and you can even take it out completely if you want. It's not ideal that it backed off slightly, but not the end of the world...
I say well done to Raceface for doing something different with their cranks, and pushing the boundaries of strength to weight ratios.
The correct torque and some red loc-tite should do the trick before leaving the factory.
I agree the BB tool is a mistake - it's almost identicle to a regular shimano bb tool, but there's one more or one less tooth. It's not a different size. Now I have two BB tools in my bag - awesome.
Lastly, the threaded bb needs a lot of care to prevent squeaking. Re-greasing and cleaning. More than normal and is definitely annoying. I didn't have the issue with a press fit set up, likely because the diameter is so much larger.
@terrafire finally, so excited these are here! Haha
Seriously though, these cranks look incredible! Unbelievably light too!
Love my next, have been brilliant. Cinch bolt could be a little tougher tho mine rounded very easy. The race face bb is still running sweet jet washes and all. Would love to get some more for my other bikes.
no matter how much loctite i put on my threaded driveside bolt it always backs itself out. Have to tighten it at least once a day in the park. And the tangle of allen keys on the stands in front of Longhorn/bike and bean are a friggin nightmare to use!
The 16mm size is also the size for SRAM/Truvativ's self-extracting bolt cover, so it's probably having one in your tool kit if you don't already have one anyway.
best banter
top shelf material
SIXC CINCH= Enduro