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Item # RSX001Z

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  • Diffusion Black, 1.5T, 15mm Maxle Lite ($676.00)
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Item # RSX001Z

XC monogamy.

For those of us who are faithful XC devotees, the benefits of trading in an inch-and-a-half of wheel diameter was worth it for the trade-off of a more maneuverable, less floppy front end; however, when it comes to travel, we like to leave the long-travel behemoths on the enduro course where they belong. RockShox's 27.5in SID RCT3 Solo Air 100 Fork respects our dedication to low-travel front ends, justifying our insistent belief that not every rocky trail requires six inches of gee-golly suspension design.

The SID's Solo Air spring features an easy-to-tune design with a single Schrader valve that controls air adjustment for both chambers. The feel of the spring is also customizable with RockShox's Bottomless Tokens, which alter the chamber's effective volume and compression curve to meet individual ramp-up preferences. While the Solo Air spring lets you adjust the fork for more trail-oriented terrain, the Power Bulges on the lower bushings ensure the SID is always ready to do what an XC bike is meant to do: hammer out a gap on the climbs. Power Bulge's reinforcement also extends to terrain, helping the fork track truer across root lattices and fast descents so you can maintain the gap you earned going up.

The fork's damper leg features the Motion Control DNA damping system, which fights off gravity with external rebound to reduce jarring and provide a controlled, smooth platform for navigation and attacking. The integrated Dual Flow technology boasts separate circuits for low- and high-speed compression as well as beginning- and end-stroke rebound damping for high-riding sensitivity over consecutive bumps and larger impacts. Pairing all this with a Rapid Recovery valve that rebounds quickly after full impacts means that the fork is always already prepped for the next hit.

Tech Specs

100 mm
Stanchion Material:
Fast Black-coated aluminum
Lower Material:
Crown Material:
6061 T-6 aluminum
Wheel Size:
27.5 in
Steer Tube Diameter:
1-1/8 - 1-1/2 in tapered
Stanchion Diameter:
32 mm
Spring Type:
Solo Air
Motion Control DNA
external rebound, low-speed compression, 3-position compression
15 mm Maxle
Max Rotor Size:
200 mm
Brake Compatibility:
Claimed Weight:
1588 g
Recommended Use:
cross country
Manufacturer Warranty:
2 years

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