Product details
Product Description
The RockShox Deluxe Ultimate RCT is a premium rear air shock custom tuned by the Trek Suspension Lab for compatible Trek Top Fuel 29 suspension platforms.
Built around a DebonAir air spring and Ultimate-level RCT damper, this Trek-specific shock delivers supple initial travel, controlled mid-stroke support, and efficient performance across technical climbs, fast descents, and varied trail conditions.
The damper provides external rebound adjustment, adjustable compression, and a two-position Open/Firm lever. Its compact trunnion upper mount and Trek-specific lower mounting dimensions are designed to work with the suspension kinematics of compatible Top Fuel frames.
Key Features
Genuine RockShox Deluxe Ultimate rear shock
Custom tuned by Trek Suspension Lab
Designed for compatible Trek Top Fuel 29 models
185 x 50mm eye-to-eye and stroke
Trunnion upper mount
DebonAir air spring
Ultimate RCT damper
External rebound adjustment
Adjustable compression damping
Two-position Open/Firm lever
Medium rebound tune
Medium compression tune
Two factory-installed volume-reducer tokens
E-bike approved
Black body with black graphics
Non-retail packaged
Specifications
Brand: RockShox
Model: Deluxe Ultimate
Model Code: RS-DLX-ULT-B2
Example Serial Number: 33T10611541
Product Type: Rear Air Shock
Intended Platform: Compatible Trek Top Fuel 29
Eye-to-Eye Length: 185mm
Stroke: 50mm
Configuration: 185x50 TR
Air Spring: DebonAir
Damper Type: RCT
Remote: No
Rebound Adjustment: External
Rebound Clicks: 10
Compression Adjustment: Open/Firm with external compression adjustment
Rebound Tune: Medium
Compression Tune: Medium
Pedal Tune: Not applicable
Lockout Force: 380
Volume Reducers: 2 tokens
Check Tune: Standard
Maximum Air Pressure: 325 PSI
E-Bike Approved: Yes
Shock Body Color: Black
Decal Color: Black
Decal Orientation: A
Mounting Dimensions
Upper Mount
Mount Type: Trunnion
Width: 54mm
Hardware Diameter: 10mm
Lower Mount
Mount Type: Standard eyelet / pin
Width: 30mm
Hardware Diameter: 8mm
Compatibility
Designed for compatible Trek Top Fuel 29 frames requiring:
185mm eye-to-eye length
50mm stroke
Trunnion upper mounting
54mm upper mounting width
10mm upper hardware diameter
30mm lower mounting width
8mm lower hardware diameter
Compatible Trek Suspension Lab tune
Some Trek references may list the eye-to-eye measurement as approximately 184mm, while RockShox identifies this shock as 185x50(TR).
Rear shocks are highly frame-specific. Matching the eye-to-eye length and stroke alone does not guarantee compatibility. Please confirm the exact bicycle model, model year, frame size, mounting dimensions, stroke, and required suspension tune before ordering.
Included
RockShox Deluxe Ultimate RCT 185 x 50mm rear shock
Factory-installed volume-reducer tokens
Includes only what is pictured and described
Warranty and Notes
Genuine Trek and RockShox replacement component
Custom Trek Suspension Lab tune
33T10611541 is an example serial number for model reference only
The serial number on the item received may differ
Frame mounting bolts and additional hardware are included only when pictured or stated
Professional installation and suspension setup are recommended
Do not exceed the maximum air pressure of 325 PSI
Manufacturer warranty eligibility is subject to applicable Trek and RockShox terms
Condition
New
Non-retail packaged
Genuine RockShox and Trek OEM product
Includes only what is pictured and described
$149.95
NEW
Rockshox
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Item specifics
| Condition | New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... |
|---|---|
| Brand | Rockshox |
| Item Weight | 3.0000 |
| MPN | 00.4118.271.046 |
| Size | 185mm x 50mm |
| Country of Origin | Taiwan |
