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RockShox SID XX World Cup Fork - Solo Air 100 29in MaxleLite15

$1,000.00 $1,210.00 17% off

Item # RSX000H

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  • White, 29in, 15QR, 100mm, Tapered ($1,000.00)
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Item # RSX000H

The legend lives.

For nearly two decades, the RockShox Sid has been the standard in lightweight XC forks. Over the years, the fork has seen a ton of innovations come and go. One innovation that looks like it isn’t go anywhere is 29-inch wheels. While that’s great for us, the riders, it presents a few serious challenges for fork manufacturers. Longer fork legs and bigger wheels mean flex in steering and braking, not to mention weight. Don’t lose any sleep over it, though—RockShox has figured it out and the Sid is better than ever.

In the areas of weight and stiffness, RockShox kills two birds with one integrated carbon fiber steerer tube/crown assembly. Power Bulges around the lower bushings also stiffen things up, and the Maxle thru-axle system keeps things stiff on the lower end of the fork. All told, the Sid tips the scales at a claimed 3.25 pounds. That’s an impressive number, and one that the Sid has had difficulty reaching in the past, even with 26-inch wheels.

Of course, there were other considerations with the design of the Sid. The damper system is RockShox’ most advanced—the XX DNA Motion Control Damper. This damper uses separate circuits for high- and low-speed compression, which allows you to dial the feel of your Sid to your exacting specifications on both big and small bumps.

The Sid XX World Cup also comes with the XLoc hydraulic remote lockout system for efficient out-of-the saddle climbing. To keep everything clean on your dashboard, the XLoc remote hooks up to your SRAM Matchmaker system.

  • Just over 3 pounds
  • Integrated, tapered carbon fiber steerer and crown
  • Maxle thru-axle
  • Power Bulge
  • XX DNA Motion Control Damper
  • XLoc remote lockout

Tech Specs

100 mm
Stanchion Material:
Lower Material:
Crown Material:
carbon fiber
Wheel Size:
29 in
Steer Tube Diameter:
1 1/8 - 1 1/2 in
Stanchion Diameter:
32 mm
Spring Type:
Solo Air
XX Motion Control Damper system
rebound, preload
15 mm
Max Rotor Size:
215 mm
Brake Compatibility:
post mount
Recommended Use:
cross country
Manufacturer Warranty:
2 years
Actual Weight:
White, 29in, 15QR, 100mm, Tapered: 1,485g

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RockShox SID XX World Cup Fork - Solo Air 100 29in MaxleLite15

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Here's what others have to say...

5 5

Excellent fork

  • Familiarity: I've used it several times

The fork is great, it is very smooth and the remote lock works perfect.
The kit included an air pump, a service kit of o-rings, two syringes to bleed or replace the oil during service and the compression bolt. The only additional item I had to buy was the crown race.
Customer service from Competitive Cyclist was superb.

5 5

very impressed with this fork

been a fox fan for the past few years but after feeling how smooth the 26 version of this was on a friends bike thought I would pull the trigger on a tallboy build. glad I did.

asides from the noticeable low weight the fork is butter smooth. had the chance to christian it in Sedona and that is as good a place as any to see if it was going to work for me. I added a bit more psi that the suggested and the fork is performing perfectly.

so far so good. rock shox is back ( for me )

very impressed with this fork
5 5


  • Familiarity: I've used it several times

Light, carbon, pop-lock, thru axle. Yep, this is the best race fork on the market. As with any fork keep a close eye on service.

5 5

Ultimate XC fork

  • Familiarity: I've put it through the wringer

The SID has been a great fork for me.
I'm a big fan of the weight, stiffness and performance. The XX Loc is a good feature that I didn't think I would use too often, but I am frequently using it and am glad I have it on the bars for convenient access. Stay on top of service and it should give you plenty of trouble free miles

Ultimate XC fork