The RockShox Deluxe Ultimate pairs the DebonAir+ air spring with a refined damper for a trail and enduro shock that's supple through the initial stroke and controlled at the limits of travel. This 165x45mm version is one of the most common sizes across modern trail and enduro frames, making it a versatile choice for builds and replacement shock upgrades alike.

• DebonAir+ air spring — supple initial stroke with a progressive ramp near bottom-out
• XL4S0 4-position air volume tune for matching the spring curve to your frame
• Reb55 rebound and Comp30 compression dials for independent adjustment
• Lightweight Deluxe Ultimate damper body
• 165x45mm sizing suits a wide range of trail and enduro platforms

DebonAir+ links the positive and negative air chambers for an exceptionally supple feel at the top of the stroke, building progressively through to bottom-out. The XL4S0 four-position tune gives meaningful spring curve adjustment without needing to pull the shock apart for volume spacer changes. Reb55 and Comp30 dials allow independent adjustment of rebound speed and compression firmness from outside the shock.

Fits frames specifying 165x45mm rear shock dimensions. Verify your frame's mount standard and hardware sizing before ordering.