
The facts.
| Brand | K-Tech |
|---|---|
| Part Number | 130-013-030-020 |
| System | 25mm Independent Damping System (25IDS) |
| Spring Series | 36-260 |
| Internal Diameter | 25 mm |
| Length | 690 mm |
| Stroke | 125 mm |
| Compression Adjustment | 24 independent clicks |
| Rebound Adjustment | 30 independent clicks |
| Oil/Air Cap Position (recommended) | 155 mm |
DescriptionThe whole story▼
Engineered in Britain and refined on the world's most demanding circuits, the K-Tech 25IDS Open Cartridge Kit transforms the front-end feel of the BMW S1000RR K46 into something genuinely adjustable and race-worthy. The 25mm Independent Damping System architecture — distinguished by its aerospace-grade aluminium construction and hard-anodised super-finished surfaces — represents K-Tech's commitment to both longevity and precision, making it as relevant on a Sunday trackday as it is on a competitive grid.
Key Features
- 25mm Independent Damping System (25IDS) provides fully separate compression and rebound circuits for nuanced, conflict-free tuning
- 24 independent compression clicks and 30 independent rebound clicks deliver exceptional granularity when dialling in damping to suit rider preference or track conditions
- Increased stroke over the OEM cartridge improves wheel travel and compliance across surface changes
- Aerospace-grade aluminium with hard-anodised super-finished components ensures durability under sustained high-load use
- Direct fitment for the BMW S1000RR K46 (2015–2018) — no modification required
- Wide range of compatible springs available separately, allowing precise rate selection for rider weight and riding style
Design, Finish and Heritage
K-Tech Suspension has built its reputation supplying suspension components to World Superbike, MotoGP and BSB teams, and the 25IDS cartridge carries that lineage in every detail. The hard-anodised super-finished surface treatment is not merely cosmetic — it reduces friction between moving components, extending service intervals and preserving damping consistency over thousands of kilometres. The aerospace-grade aluminium alloy keeps unsprung weight in check while providing the structural rigidity required to withstand repeated high-speed compression events.
The 25IDS designation reflects the system's core philosophy: compression and rebound are tuned entirely independently of one another, so stiffening the compression circuit to control dive under heavy braking has no unintended effect on rebound behaviour. For BMW S1000RR riders who have found the stock cartridge limiting — whether on circuit or on a challenging mountain road — this is the upgrade that unlocks the chassis's true potential.
Setup and Installation
K-Tech provides recommended baseline settings to get riders onto the road quickly: an oil/air cap position of 155 mm, 12 compression clicks, 18 rebound clicks, and 8 mm of preload. These starting points, combined with the 125 mm stroke and the 36-260 series spring compatibility, create a highly tuneable platform. Because the 25IDS replaces the factory cartridge inside the existing fork legs, the external appearance of the motorcycle is unchanged.
Please note that compatible fork springs must be ordered separately — they are not included with this kit. K-Tech recommends installation by an authorised K-Tech Service Centre to ensure correct assembly, oil fill and baseline setup.
Fitment and Compatibility
This cartridge kit is designed specifically for the BMW S1000RR K46 manufactured between 2015 and 2018. Always verify your frame code and model year before ordering. If you are unsure of compatibility, the Inter-Pace technical team is available to assist.
Specifications
- Spring series: 36-260
- Internal diameter: 25 mm
- External diameter: 14 mm
- Length: 690 mm
- Oil/air cap position (recommended): 155 mm
- Stroke: 125 mm
- Compression clicks (recommended): 12
- Rebound clicks (recommended): 18
- Preload (recommended): 8 mm
- Fitment: BMW S1000RR K46 (2015–2018)
- Part number: 130-013-030-020
- Note: Compatible springs must be ordered separately. Installation by an authorised K-Tech Service Centre is recommended.
FitmentWhich bikes this fits▼
- BMW S1000RR K46 (2015–2018)
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