
The facts.
| Brand | K-Tech |
|---|---|
| Model | DDS Pro |
| Part number | 255-017-010-020 |
| Fitment | Aprilia RSV4 1000 RF (2017–2019), RSV4 1000 RR (2017–2020), RSV4 1100 (2021–2024), RSV4 1100 Factory (2019–2024) |
| Spring series | 55–155 |
| Length | 315 mm |
| Stroke | 62 mm |
| RCU body diameter | 35 mm |
| RCU shaft diameter | 12 mm |
| Country of manufacture | United Kingdom |
DescriptionThe whole story▼
Engineered for riders who demand total confidence lap after lap, the K-Tech DDS Pro rear shock absorber delivers a level of chassis control and ride comfort that transforms the Aprilia RSV4 experience — whether you are navigating a long race stint or committing fully to a track day. Developed and continuously refined through competition in the British Superbike Championship and the Isle of Man TT, this unit brings proven professional-level suspension to the road and circuit alike.
Key Features
- Five-way adjustability — compression, rebound, ByPass Valve (BPV), hydraulic preload and length — provides a genuinely all-day, perfectly dialled-in ride quality for every rider weight and road surface
- 32-click compression damping adjustment for precise, repeatable tuning of mid-stroke and high-speed feel
- 32-click rebound damping adjustment for optimal traction and wheel control under hard acceleration
- 16-click BPV (ByPass Valve) adjustment fine-tunes low-shaft-speed damping, improving tyre feedback and grip off slow corners
- Hydraulic preload adjustment allows rapid, tool-free ride-height changes between sessions or pillion/solo configurations
- Length adjustment to optimise chassis geometry for individual track layouts or preferred riding style
- CNC-machined components throughout for maximum rigidity and long-term durability
- DDS (Dual Damping System) technology with integrated potentiometer mounting points for data logging
- Wide choice of spring rates (55–155 series) for precise matching to rider weight and use case
Race-Proven British Engineering
Every K-Tech DDS Pro unit is designed and hand-assembled in Great Britain using advanced CAD/CAE software and the highest-specification aerospace-grade materials. The DDS platform has been battle-tested at the highest levels of professional motorcycle racing, making it one of the most trusted aftermarket shock absorbers available for Superbike-class machines. Unlike mass-produced OEM replacements, each unit is built to tolerances that translate directly into more predictable handling, reduced rider fatigue and improved lap times.
The ByPass Valve Advantage
The BPV system is the defining feature that separates the DDS Pro from conventional shock absorbers. By independently controlling the damping force at low shaft speeds — precisely where small surface irregularities are absorbed and tyre contact patch pressure is determined — the BPV dramatically improves feedback through the seat and footpegs. The result is a shock that feels compliant and communicative on fractured road surfaces while remaining firmly controlled under hard cornering loads.
Fitment and Compatibility
This unit (part number 255-017-010-020) is a direct fitment for the following Aprilia RSV4 variants:
- RSV4 1000 RF (2017–2019)
- RSV4 1000 RR (2017–2020)
- RSV4 1100 (2021–2024)
- RSV4 1100 Factory (2019–2024)
Installation note: K-Tech recommends fitment by an authorised K-Tech Service Centre. Correct installation requires specialist tools and techniques to ensure maximum safety and optimum performance.
Specifications
| Specification | Value |
|---|---|
| Spring series | 55–155 |
| Length | 315 mm |
| SKU tolerance | -0 / +6 mm |
| Stroke | 62 mm |
| Force | 85 N |
| Force (bar) | 5.00 |
| Upper mount | Eye | width 23 mm | bolt diameter 10 mm |
| Lower mount | Eye | width 36 mm | bolt diameter 10 mm |
| Recommended compression clicks | 12 |
| Recommended rebound clicks | 18 |
| Recommended preload | 12 mm |
| Recommended BPV clicks | 8 |
| RCU adjustment range | 5 mm |
| RCU body diameter | 35 mm |
| RCU shaft diameter | 12 mm |
| Part number | 255-017-010-020 |
FitmentWhich bikes this fits▼
- Aprilia RSV4/RR/RF/1100 Factory (2017–2025)
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