The facts.
| Brand | K-Tech |
|---|---|
| Part number | 155-011-030-020 |
| System | Direct Damping System (DDS) – closed cartridge |
| Fitment | BMW S1000RR (2009–2014) |
| Spring series | 36-260 series |
| Inner diameter | 20 mm |
| Outer diameter | 32 mm |
| Length | 690.25 mm |
| Stroke | 125 mm |
| Oil / air gap (suggested) | 165 mm |
DescriptionThe whole story▼
Engineered for riders who demand absolute precision from their front suspension, the K-Tech DDS Closed Cartridge Kit transforms the fork performance of the BMW S1000RR (2009–2014) through patented Direct Damping System technology and a pressurised, cavitation-free design proven at the highest levels of motorsport, including the British Superbike Championship and the Isle of Man TT.
Key Features
- Patented pressurised Direct Damping System (DDS) eliminates cavitation under extreme race conditions, maintaining consistent damping response lap after lap.
- Asymmetric damping architecture reduces response lag and delivers a precise, stable feel across a full range of riding conditions.
- 30-click adjustment range for both compression and rebound, giving riders granular control over suspension behaviour on road or track.
- 18 mm preload adjustment allows fine-tuning of ride height and spring engagement to suit rider weight and circuit demands.
- 20 mm working piston paired with a 31 mm control piston generates high oil flow for maximum damping authority at all speeds.
- Supplied complete with three pairs of springs and all tools required for spring changes — ready to install and tune straight from the box.
Build Quality and Materials
The DDS Closed Cartridge Kit represents K-Tech's commitment to race-grade construction. Every component is manufactured to tolerances that reflect the brand's heritage supplying professional Superbike teams. The closed cartridge format keeps the damping oil sealed and pressurised, preventing the aeration that causes conventional cartridge forks to fade under repeated hard braking and high-speed compression. The 31 mm control piston is a hallmark of the DDS design — its larger surface area relative to the working piston drives the asymmetric damping curve that makes the fork feel planted under braking yet supple over mid-corner bumps. This is not an upgrade built around a single specification; it is an adjustable system designed to be dialled in precisely for the rider, the machine, and the conditions.
Performance on Road and Track
With 30 clicks of compression and 30 clicks of rebound adjustment, the DDS kit covers everything from spirited road riding to full-circuit racing. The suggested baseline settings — 16 clicks compression, 18 clicks rebound, 10 mm preload, and a 165 mm oil/air gap — provide a proven starting point from which riders can build a personalised setup. The 125 mm stroke and 690.25 mm cartridge length are matched precisely to the S1000RR fork internals for the 2009–2014 model years, ensuring correct travel and oil volume without modification.
Fitment and Compatibility
This kit is designed exclusively for the BMW S1000RR across the following model years:
- BMW S1000RR – 2009
- BMW S1000RR – 2010
- BMW S1000RR – 2011
- BMW S1000RR – 2012
- BMW S1000RR – 2013
- BMW S1000RR – 2014
Specifications
| Specification | Value |
|---|---|
| Spring series | 36-260 series |
| Inner diameter | 20 mm |
| Outer diameter | 32 mm |
| Length | 690.25 mm |
| Oil / air gap (suggested) | 165 mm |
| Stroke | 125 mm |
| Compression clicks (suggested) | 16 |
| Rebound clicks (suggested) | 18 |
| Preload | 10 mm |
| Part number | 155-011-030-020 |
What's includedEverything in the box▼
- 1x K-Tech DDS Closed Cartridge Kit (pair)
- 3x pairs of springs
- Spring-change tools
FitmentWhich bikes this fits▼
- BMW S1000RR (2009–2014)
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Measure your head circumference about one centimetre above your eyebrows and compare it with the size chart on this page. Between sizes? Choose the smaller one — the padding beds in with use.
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