The facts.
| Brand | K-Tech |
|---|---|
| Part Number | 155-013-030-020 |
| Fitment | BMW S1000RR K46 (2015-2018) |
| System Type | DDS Closed Cartridge (pressurised) |
| Piston Diameter | 20 mm |
| Control Piston Diameter | 31 mm |
| Outer Diameter | 32 mm |
| Overall Length | 692.75 mm |
| Travel | 125 mm |
| Piston Rod Diameter | 8 mm |
DescriptionThe whole story▼
The K-Tech DDS Closed Cartridge Kit is engineered to a standard trusted at the highest levels of circuit racing — from British Superbike rounds to the Isle of Man TT. Designed specifically for the BMW S1000RR K46 (2015-2018), this pressurised Direct Damping System delivers a level of chassis control and suspension precision that the stock cartridges simply cannot match.
Key Features
- Patented Direct Damping System (DDS) design eliminates cavitation for consistent, fade-free damping under extreme conditions
- 20 mm piston and 31 mm control piston combination provides exceptional damping authority and hydraulic efficiency
- 30 clicks of independent compression and rebound adjustment give the rider granular, repeatable tuning across every type of road or track surface
- 18 mm preload adjustment range allows spring pre-load to be dialled in precisely to rider weight and riding style
- 8 mm piston rod and generous oil flow deliver a more communicative, responsive feel through the front end
- Race-proven at British Superbike and Isle of Man TT level — certified performance rather than claimed
Performance & Engineering
The DDS closed cartridge architecture operates under positive pressure at all times, which is the defining safety and performance advantage of this system. By maintaining pressure throughout the stroke, the oil film between moving surfaces is never broken, cavitation cannot form, and damping response remains linear and predictable whether you are trail-braking into a hairpin or holding a fast, bumpy corner. This is the same physical principle underpinning the cartridges run by professional championship teams, and it is what separates a DDS unit from a conventional open-bath cartridge.
The 20 mm inner bore paired with the 31 mm control piston creates a large effective flow area, keeping oil velocities lower and heat generation in check during extended track sessions. Combined with the 8 mm piston rod, the system's hydraulic characteristics stay consistent across the full 125 mm of travel rather than changing as temperatures build — a measurable real-world benefit over a long race distance or a hard alpine pass.
Setup & Adjustability
K-Tech supplies suggested baseline settings to reduce the time spent finding a workable starting point. Suggested compression click setting is 16 clicks from fully closed; suggested rebound is 18 clicks from fully closed; suggested oil-to-air gap is 165 mm; and suggested preload is 10 mm. These figures are drawn from K-Tech's extensive data gathered in competition, providing a genuinely informed starting point rather than a generic mid-range recommendation. From there, the 30-click range on each damping circuit offers enough spread to suit everything from a loaded road tourer to a lightweight track-day set-up.
Fitment & Compatibility
This cartridge kit is manufactured to fit the BMW S1000RR K46 model years 2015, 2016, 2017 and 2018. Always verify your exact fork inner diameter and tube length before fitting. If in doubt, contact Inter-Pace with your VIN or frame number for confirmation.
Specifications
| Specification | Value |
|---|---|
| Part Number | 155-013-030-020 |
| Fitment | BMW S1000RR K46 (2015-2018) |
| System Type | DDS Closed Cartridge (pressurised) |
| Piston Diameter | 20 mm |
| Control Piston Diameter | 31 mm |
| Outer Diameter | 32 mm |
| Overall Length | 692.75 mm |
| Travel (stroke) | 125 mm |
| Piston Rod Diameter | 8 mm |
| Oil / Air Gap (suggested) | 165 mm |
| Compression Clicks (suggested baseline) | 16 |
| Rebound Clicks (suggested baseline) | 18 |
| Preload (suggested) | 10 mm |
| Spring Series Compatibility | 36-260 series |
| Compression / Rebound Adjustment Range | 30 clicks each |
| Preload Adjustment Range | 18 mm |
FitmentWhich bikes this fits▼
- BMW S1000RR K46 (2015–2018)
Questions, one topic at a time.
Get the real shipping cost for this item to your address — the same rates as checkout.
Choose a destination and hit Estimate — we fetch the live rates for this item.
We’re based in Germany. Standard delivery goes by DHL and national postal services and takes about 2–5 days within Germany, 1–2 weeks within the EU and 2–6 weeks outside the EU. Need it sooner? Express delivery reaches most of the world within a few days — just choose it at checkout where available.
Your exact shipping cost is calculated by destination and weight and shown at checkout before you pay — no hidden fees. Express delivery is selectable at checkout where available.
Yes, we ship to over 130 countries. Prices, taxes and delivery times for your destination are calculated automatically at checkout.
Within the EU, no — our prices already include all duties and EU VAT. For deliveries outside the EU (e.g. Switzerland, the UK or the USA), your order may be subject to import duties and taxes set by your country. These are collected by the carrier when your parcel arrives, aren’t included in our prices, and are outside our control.
As soon as your parcel ships we email you a tracking link, so you can follow it all the way to your door.
On out-of-stock items you can request a delivery time or leave your email to be notified the moment it returns — just use the notification box on the product.
You have the right to cancel within 14 days of receiving your order. Register your return by email first; once it’s approved you have a further 14 days to send the goods back. Items should be unused and in their original packaging.
Register your return by email with your order number before sending anything back, and we’ll send you the return instructions. Please note: returns that aren’t registered in advance can’t be accepted.
The quickest way is to place a new order for the size you need and register a return for the original by email — just let us know it’s an exchange.
We’re sorry — that shouldn’t happen. Contact us with your order number and a photo as soon as you can, and we’ll arrange a replacement or refund right away. Faulty goods are always covered by your statutory warranty.
Refunds go back to your original payment method, usually within 3–5 working days of your return reaching our warehouse.
PayPal, all major credit and debit cards (Visa, Mastercard, American Express), Klarna (pay later and instalments), Apple Pay, Google Pay and more — all processed securely via PayPal and Mollie.
Yes. Choose Klarna at checkout to split your purchase into flexible monthly installments.
Your payment is taken when you place your order. If you choose Klarna, you pay later according to Klarna’s terms.
Every payment runs over an SSL-encrypted connection through certified providers. We never see or store your full card details.
If your order hasn’t shipped yet, contact us as soon as possible and we’ll do our best to change or cancel it.
No — you can check out as a guest. An account simply lets you track orders and reorder faster.
For customers in the EU, prices are shown including your country’s local VAT. For customers outside the EU, prices are shown without VAT — instead, your country’s import taxes and duties may apply on delivery (see the customs question).
Yes. Your invoice is attached to your order confirmation email and is also available in your account.
Yes. We’re an authorised dealer, so every product is 100% original and comes with the full manufacturer warranty.
Yes. Everything we sell is genuine and comes with the manufacturer’s warranty, on top of your statutory rights. Keep your invoice as proof of purchase and contact us if you ever need to make a claim — we’ll help you through it.
Our team is happy to help. Use the contact button below and we’ll personally help you choose the right gear or part.
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.
Yes — it’s tested and approved to the current ECE 22.06 standard and road-legal across the EU.
Most of our touring and sport helmets are Pinlock-ready and many include the insert. Check the ‘What’s in the box’ section on this page for this model.
Yes — the cheek pads are channelled so the arms of your glasses slide in comfortably.
Take out the washable lining and hand-wash it in lukewarm water. Clean the shell and visor with a soft cloth and water only — never solvents.
Our team will personally help you choose the right gear or part — around 24h for a reply.