RockShox

Ultimate RCT Trunnion Rear Shock - 165x45mm C2

The RockShox Deluxe Ultimate RCT Trunnion Rear Shock – 165x45mm C2 delivers the kind of refined performance that aggressive trail and enduro riders demand. Built around the proven DebonAir+ Linear XL air spring, this shock balances plush small-bump sensitivity with rock-solid mid-stroke support for a confident, controlled ride on any terrain. Whether charging through technical descents or grinding up climbs, it offers a smooth, predictable feel that keeps the bike composed and the rider in control.

Premium tuning options make this shock stand out. The independent Low Speed Compression and Low Speed Rebound adjustments allow riders to fine-tune performance to match their terrain and style, while the easy-access lever quickly switches from Open to Firm for instant efficiency on the climb. Inside, Maxima Plush damping fluid keeps everything quiet and consistent, reducing friction and extending damper life.

This C2-generation Deluxe Ultimate doesn’t just perform—it’s engineered for versatility, precision, and a premium ride feel from trailhead to finish line.

• DebonAir+ Linear XL air can delivers maximum tuning range in a compact, lightweight design
• Independent Low Speed Compression and Rebound adjustments for precise ride customization
• Bottom-out system enhances control and eliminates harsh feedback for smoother landings
• Maxima Plush damping fluid minimizes friction and damper noise
• E-bike approved for confident performance across a wider range of builds
• Quick-access Open/Firm lever lets riders adapt instantly to changing terrain

Default Settings

• 4 Neg/0 Pos Tokens,
• Reb55/Comp30
• Lockout 4
• Linear XL