K-Tech 25IDS Open SBK Cartridge Kit for Suzuki GSX-R 1000 2012–2023, hard-anodised aluminium
02 · Data & docs

The facts.

Technical data
BrandK-Tech
Part number125-012-230-021
System25 mm Independent Damping System (25IDS)
FitmentSuzuki GSX-R 1000 (2012–2023)
Inner diameter25 mm
Outer diameter14 mm
Length659.25 mm
Stroke125 mm
Spring series compatibility36-260 series (sold separately)
DescriptionThe whole story

Built from aerospace-grade aluminium with hard-anodised, super-finished internals, the K-Tech 25IDS Open SBK Cartridge Kit transforms the front end of the Suzuki GSX-R 1000 (2012–2023) into a precision suspension platform. The 25 mm Independent Damping System separates compression and rebound circuits entirely, giving the rider a level of setup resolution that simply is not possible with a standard cartridge.

Key Features

  • 25 mm Independent Damping System (25IDS) — compression and rebound are tuned independently for true, interference-free setup changes
  • 24 clicks of independent compression adjustment and 30 clicks of independent rebound adjustment for fine-grained control across a wide range of conditions
  • Increased stroke versus the original cartridge (+15 mm), unlocking greater chassis balance and improved front-end feel
  • Aerospace-grade aluminium construction throughout, hard-anodised and super-finished for exceptional durability and reduced friction
  • Compatible with the full K-Tech 36-260 spring range, allowing the spring rate to be matched precisely to rider weight and riding style (springs sold separately)
  • Part number 125-012-230-021 — traceable, genuine K-Tech fitment for the GSX-R 1000 2012–2023

Build Quality and Materials

K-Tech manufactures the 25IDS cartridge body from aerospace-specification aluminium alloy, then hard-anodises every component to produce a surface that resists wear, corrosion and the thermal cycling that is unavoidable in hard track or road use. The super-finished bore and rod surfaces minimise stiction, ensuring the damping curves you dial in are the ones the fork actually delivers — lap after lap, not just on the first outing. Every tolerance is held to the standard K-Tech applies to its World Superbike-supplied components, making this kit a genuinely race-derived upgrade rather than a bolt-on compromise.

Setup and Performance

The heart of the 25IDS design is the separation of the compression and rebound valving stacks. On a conventional cartridge, adjusting one circuit influences the other; the IDS architecture eliminates that interaction. The compression adjuster offers 24 distinct clicks, the rebound adjuster 30, so the rider can map damping response precisely to tyre compound, track surface and riding style. Suggested baseline settings — 12 clicks compression, 18 clicks rebound, 8 mm preload — provide a practical starting point from which setup work can begin immediately. The extended stroke of 125 mm, 15 mm more than the stock cartridge, allows the chassis to work through its full geometry range, improving stability under braking and feedback through corners.

Important Notice

The 25IDS Open SBK kit is not homologated for Superstock 1000 class competition. The increased travel of +15 mm places the fork outside the regulations for that category. Riders competing in Superstock should consult K-Tech's Superstock-legal alternatives. For all other track and road applications, installation by an authorised K-Tech Service Centre is strongly recommended to ensure correct setup and warranty validity. Compatible fork springs from the 36-260 series must be ordered separately.

Fitment and Compatibility

This cartridge kit is designed and validated for the following fitment:

  • Suzuki GSX-R 1000 — model years 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023

Specifications

Parameter Value
Part number 125-012-230-021
Inner diameter 25 mm
Outer diameter 14 mm
Length 659.25 mm
Stroke 125 mm
Compression clicks (suggested) 12
Rebound clicks (suggested) 18
Preload (suggested) 8 mm
Spring series 36-260 (sold separately)
FitmentWhich bikes this fits
  • Suzuki GSX-R 1000 (2012–2023)
07 · Support

Questions, one topic at a time.

Estimate your shipping

Get the real shipping cost for this item to your address — the same rates as checkout.

Pick your countrySame rates as checkout

Choose a destination and hit Estimate — we fetch the live rates for this item.

How long does delivery take?

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.

How much does shipping cost?

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.

Do you ship to my country?

Yes, we ship to over 130 countries. Prices, taxes and delivery times for your destination are calculated automatically at checkout.

Will I have to pay customs or import duties?

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.

How can I track my order?

As soon as your parcel ships we email you a tracking link, so you can follow it all the way to your door.

What if an item is out of stock?

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.

Didn’t find your answer?

Our team will personally help you choose the right gear or part — around 24h for a reply.

08 · Paddock

Before you go.

Trending in the paddockHover pauses
A.Marquez73 V3 TC-2 Ale...353.087 FtMárquez Motegi5 TC-6353.087 FtToprak Razgatlıoğlu Rep...353.087 FtValion TC-1 Red / Grey334.484 FtA.Marquez73 V3 TC-2 Ale...353.087 FtMárquez Motegi5 TC-6353.087 FtToprak Razgatlıoğlu Rep...353.087 FtValion TC-1 Red / Grey334.484 FtA.Marquez73 V3 TC-2 Ale...353.087 FtMárquez Motegi5 TC-6353.087 FtToprak Razgatlıoğlu Rep...353.087 FtValion TC-1 Red / Grey334.484 FtA.Marquez73 V3 TC-2 Ale...353.087 FtMárquez Motegi5 TC-6353.087 FtToprak Razgatlıoğlu Rep...353.087 FtValion TC-1 Red / Grey334.484 FtA.Marquez73 V3 TC-2 Ale...353.087 FtMárquez Motegi5 TC-6353.087 FtToprak Razgatlıoğlu Rep...353.087 FtValion TC-1 Red / Grey334.484 FtA.Marquez73 V3 TC-2 Ale...353.087 FtMárquez Motegi5 TC-6353.087 FtToprak Razgatlıoğlu Rep...353.087 FtValion TC-1 Red / Grey334.484 FtA.Marquez73 V3 TC-2 Ale...353.087 FtMárquez Motegi5 TC-6353.087 FtToprak Razgatlıoğlu Rep...353.087 FtValion TC-1 Red / Grey334.484 FtA.Marquez73 V3 TC-2 Ale...353.087 FtMárquez Motegi5 TC-6353.087 FtToprak Razgatlıoğlu Rep...353.087 FtValion TC-1 Red / Grey334.484 FtA.Marquez73 V3 TC-2 Ale...353.087 FtMárquez Motegi5 TC-6353.087 FtToprak Razgatlıoğlu Rep...353.087 FtValion TC-1 Red / Grey334.484 FtA.Marquez73 V3 TC-2 Ale...353.087 FtMárquez Motegi5 TC-6353.087 FtToprak Razgatlıoğlu Rep...353.087 FtValion TC-1 Red / Grey334.484 FtA.Marquez73 V3 TC-2 Ale...353.087 FtMárquez Motegi5 TC-6353.087 FtToprak Razgatlıoğlu Rep...353.087 FtValion TC-1 Red / Grey334.484 FtA.Marquez73 V3 TC-2 Ale...353.087 FtMárquez Motegi5 TC-6353.087 FtToprak Razgatlıoğlu Rep...353.087 FtValion TC-1 Red / Grey334.484 FtA.Marquez73 V3 TC-2 Ale...353.087 FtMárquez Motegi5 TC-6353.087 FtToprak Razgatlıoğlu Rep...353.087 FtValion TC-1 Red / Grey334.484 FtA.Marquez73 V3 TC-2 Ale...353.087 FtMárquez Motegi5 TC-6353.087 FtToprak Razgatlıoğlu Rep...353.087 FtValion TC-1 Red / Grey334.484 Ft
Join the paddock — drops & deals, no noise.