RockShox

Ultimate RCT Trunnion Rear Shock - 165x37.5mm C2

The RockShox Deluxe Ultimate RCT Trunnion Rear Shock is built for riders who demand precision, control, and a truly refined suspension feel. Designed in the 165x37.5mm C2 configuration, this lightweight inline shock delivers the ideal balance of tunability and performance for aggressive trail and all-mountain riding. With its DebonAir+ Linear XL air spring and advanced damping system, it’s made to smooth out the roughest lines while keeping every pedal stroke efficient and responsive.

Whether chasing speed on technical descents or grinding up punchy climbs, this shock’s independent compression and rebound adjustments give riders the freedom to fine-tune their setup for any terrain or riding style. The Maxima Plush damping fluid keeps everything running quiet and friction-free, while the bottom-out control system ensures consistent support even when pushing limits.

Key Features:

• DebonAir+ Linear XL air can delivers a wider tuning range and smoother, more controlled suspension feel in a compact package.
• Independent Low Speed Compression and Low Speed Rebound adjustments let riders dial in efficiency and traction with precision.
• Bottom-out system enhances control on big hits while reducing unwanted noise and harshness.
• Maxima Plush damping fluid reduces friction and keeps performance consistent over long rides.
• Open to Firm/Lock lever makes it easy to switch between climbing and descending modes on the fly.
• E-bike approved for riders who want top-tier suspension performance across every platform.

The Deluxe Ultimate RCT is the kind of rear shock that transforms how a bike feels on the trail—responsive when you want it, forgiving when you need it, and always ready to ride harder and faster with confidence.

Default Settings

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