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RockShox
RS-1 ACS Solo Air 100 Fork - 27.5in - 2017

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RS-1 ACS Solo Air 100 Fork

At first glance, it looks like somebody at RockShox wasn’t paying attention when they put the RS-1 ACS Solo Air 100 Fork together. The legs slide down over the stanchions, the axle is weird, and the dropouts are, well, weirder. It all seems like a mistake, until you realize that this design keeps the oil suspended above the bushings for better lubrication and smoother compression, boosts the stiffness, and makes the RS-1 ACS one of the best XC forks on the market.


How, exactly? Well, the steerer tube, crown, and legs are all carbon, so stiffness is a given. The stanchions are coated with Fast Black for buttery smoothness, and the axle is basically a two-part job for insane stiffness—there’s a traditional 15mm axle, and a 27mm Torque Tube axle that locks the thru-axle, fork, and wheel into a super-stiff single piece, so you can rail corners with no flex to speak of. There’s a ton of adjustability built into the fork, too, and it comes with an XLoc remote that lets you lock things out without having to slow down. Of course, you need a special wheel and hub to make it all work. RockShox calls this system “Predictive Steering”, and DT Swiss is the only other company to make compatible wheels.


Details

  • Rockshox inverts the classic for this speedy XC fork
  • Oil suspends over bushings for better lubrication
  • Carbon steer tube, legs, and crown are lightweight carbon
  • Super wide 27mm Torque Tube elevates stiffness
  • XLoc remote allows you to adjust fork without slowing down
  • Compatible only with Predictive Steering wheels
  • Item #RSX001Q
Travel
100 mm
Stanchion Material
aluminum
Lower Material
carbon fiber
Crown Material
carbon fiber
Wheel Size
27.5 in
Stanchion Diameter
32 mm
Spring Type
Solo Air
Damper
Accelerator
Adjustability
XLoc, Beginning Stroke rebound
Lockout
yes
Axle
15 mm Maxle Ultimate
Max Rotor Size
200 mm
Brake Compatibility
disc
Compatible Components
Predictive Steering hub
Claimed Weight
1646g
Manufacturer Warranty
2 years

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