RockShox

SID Ultimate Race Day 2-Position Remote 29in Boost Fork

What Our Gearhead® Experts Are Saying:

"I love how the SID Ultimate 2P feels under pressure—stiff through corners and smooth on chattery sections. The new DebonAir+ spring makes a noticeable difference in small-bump feel, and the remote lockout gives me instant control mid-race."

RockShox's SID Ultimate 2P takes cross-country performance to the next level with its lightweight, ultra-stiff 35mm chassis and a simplified, race-tuned damper system. At the heart of the fork is the Charger Race Day 2 damper—the lightest damper RockShox has ever made—offering two remote-controlled compression modes: Open for traction and Lock for climbing or sprinting. This combination gives XC racers immediate control without added complexity.

Paired with the updated DebonAir+ spring, the SID Ultimate 2P delivers an exceptionally smooth ride with enhanced sensitivity right off the top and more tunable mid-stroke support. The magnesium lower legs and forged aluminum crown contribute to a chassis that stays light while holding precise lines under load. The upper tubes feature a Fast Black finish for reduced friction and long-term durability.

Designed specifically for 29-inch wheels and 120mm travel, it also features Boost axle spacing, a 44mm offset, and disc brake compatibility up to 220mm. This version includes Maxle Stealth, a bolt-on fender, and is compatible with both TwistLoc and OneLoc remotes (sold separately). Whether you're lining up for your local XC series or chasing podiums at the national level, the SID Ultimate 2P is the fork that helps you ride faster, smoother, and with total confidence.