Mountain bike fork selection starts with travel — the amount the fork can compress. Cross-country forks run 80–120mm for minimal weight penalty on fast-rolling terrain; trail forks at 130–150mm balance versatility with capability; enduro forks at 160–180mm prioritize control on aggressive terrain; downhill forks at 200mm are built for bike parks and gravity racing. Axle standard (15mm through-axle Boost is most common) and wheel size (29" or 27.5") need to match your frame. Damper quality is the other key variable — RockShox's Charger 3.1 damper, found in the Lyrik Ultimate and SID Ultimate, delivers independent high- and low-speed compression adjustment for technical terrain, while the Flight Attendant system adds wireless electronic control that automatically adapts to changing trail conditions in real time.

Road and triathlon forks in this collection are primarily frame-specific replacements — Cervelo's Soloist and Caledonia-5 forks match those framesets precisely, while the Argon 18 E-117 tri fork fits that triathlon platform. The ENVE Road Disc Fork is an aftermarket option for custom builds requiring a high-performance carbon fork with disc brake routing. Service and upgrade parts cover a range of RockShox maintenance needs: SKF dust seals and foam rings for fork rebuilds, DebonAir air spring kits for improved small-bump sensitivity, and Charger 2.1 damper upgrade kits for bringing older RockShox forks closer to current-generation performance.

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