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Item # RCF001Q

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  • Black, 165mm ($390.99)
  • Black, 170mm ($390.99)
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Item # RCF001Q

The lightest DH crank ever. How convenient.

Do you just happen to be looking around for the world's lightest DH-rated production crankset? Step right this way and check out the Race Face SIXC Carbon Crank Arms with 83mm Spindle.

Made in-house of ultra-high-density unidirectional carbon fiber, and formed with a proprietary hollow-molding process, the SIXC's arms are like Bruce Lee's: there are bigger ones out there, but virtually none that are stronger. The crank is based on the company's Cinch interface, which allows for the installation of both direct-mount Race Face chainrings in a huge range of available sizes, or a four-bolt spider for the installation of any others. The modular 30mm spindle interface means you can swap out the included 83mm spindle for a standard 68/73mm one, both of which are made of RF's proprietary "super alloy" that's 20% stronger than the 7050-series alloy most commonly used in crank spindles.

The Race Face SIXC Crank Arms with 83mm Spindle are available in the color Black and in 165mm, 170mm, and 175mm lengths. They do not include and chainrings, spiders, or the necessary Race Face Cinch bottom bracket, which is available for several different bottom bracket platforms.

Tech Specs

Arm Material:
Bottom Bracket:
not included
BB Type:
Cinch (various versions available)
30mm Race Face Super Alloy
Actual Weight:
Black, 170mm: 476g
Recommended Use:
downhill, freeride, all-mountain, BMX
Manufacturer Warranty:
1 year

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Stiff and light

  • Familiarity: I've put it through the wringer

Got these on my DH bike and they are amazing. Super light and super stiff. Be sure to put a set of crank boots on them though for those rock strikes.