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  • RockShox SID World Cup 27.5 Charger DebonAir 100 Boost Fork
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RockShoxSID World Cup 27.5 Charger DebonAir 100 Boost Fork
Sale 30% Off$699.30 $999.00

Item # RSX0084Past Season Colors

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  • Diffusion Black, 42mm Offset, 15x110 ($699.30)
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Item # RSX0084

If you have a compulsive habit of counting grams, with the podium being your ultimate goal, look no further than the RockShox SID World Cup 27.5 Charger DebonAir 100 Boost Fork for a competitive edge. Here to save weight at all costs, the SID World Cup is one of the lightest forks on the market, courtesy of  32-millimeter stanchions, carbon fiber crown and steerer, and knocked-out magnesium dropouts. In this 27.5-inch model with Boost axle spacing and 100 millimeters of travel, the scales tips at an unbelievable 1491 grams.

While it's designed to save weight in the name of go-fast efficiency, RockShox didn't skimp out on adjustability or support over small bumps and mid-sized hits, thanks to the additions of a Charger 2 damper, DebonAir spring, and factory tuned Dig Valve. You'll find you can quickly switch between wide open and fully locked out, as well as dial-in the low-speed compression to your particular racing needs. The Charger 2 damper is now compatible with RockShox's OneLoc remote and TwistLoc grip-style lockout (both sold separately), in case you need to sprint towards the finish line or hammer up a smooth climb without having to reach down and flick the fork's adjustment knob into the fully locked position.

DebonAir is one of the best additions to this SID World Cup, seeing as it increases the negative air spring volume for better compliance over small bumps and higher levels of traction when you're muscling up climbs laden with momentum-stopping rocks and roots. The addition of DebonAir really makes it feel plusher off the top and more sensitive to trail imperfections, but without sacrificing support as you push deeper into the travel, due to the Dig Valve providing just the right amount of control over the fork's mid-stroke support and ability to properly absorb impacts.

If you'd like to add a bit of progressiveness to the end stroke ramp-up, you can always toss in a few Bottomless Tokens (sold separately) to prevent it from bottoming out or blowing through excessive travel on those bigger hits. Although this particular SID World Cup comes in Boost spacing for a stiffer, more precise feel of your front wheel as it's plunging into rocks and roots, SRAM's Torque Caps (sold separately) allow you to add even greater stiffness of the front wheel by increasing the surface area between hub and fork dropout.

  • Incredibly lightweight cross-country racing fork
  • Streamlined 32mm chassis designed for XC racing
  • Carbon fiber steerer and crown for weight savings
  • Knocked-out magnesium dropouts save additional grams
  • DebonAir increases small-bump compliance and traction
  • Charger 2 damper with open and fully locked settings
  • Additional low-speed compression tuning and rebound adjust
  • Compatible with OneLoc and TwistLoc remotes for XC racing
Tech SpecsWeight
Tech Specs
Stanchion Material
Fast Black-coated aluminum
Lower Material
Crown Material
carbon fiber crown and steerer
Wheel Size
Steer Tube Diameter
1-1/8 - 1-1/2 in tapered
Stanchion Diameter
32 mm
Spring Type
Charger 2
2-position: open and locked, low-speed compression tuning, external rebound adjust
yes, firm lockout
15 x 110mm Boost
Brake Compatibility
Recommended Use
Manufacturer Warranty
2 years

Actual Weight

Actual weights are measured in-house by the Competitive Cyclist team.

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Diffusion Black, 42mm Offset, 15x110

Claimed Weight

Claimed weights are provided by the vendor.

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