K-Tech 25IDS Open STK fork cartridge kit for Suzuki GSX-R 1000 2012–2023
02 · Data & docs

The facts.

Technical data
Part number125-012-230-020
System25 mm Independent Damping System (25IDS)
Inner diameter25 mm
Outer diameter14 mm
Length659.50 mm
Stroke125 mm
Compression adjustment24 clicks independent
Rebound adjustment30 clicks independent
Suggested compression setting12 clicks
Suggested rebound setting18 clicks
DescriptionThe whole story

Engineered from aerospace-grade aluminium with hard-anodised, super-finished internals, the K-Tech 25IDS Open STK Cartridge Kit transforms the stock forks of the Suzuki GSX-R 1000 (2012–2023) into a precision-tunable platform that is fully homologated for Superstock 1000 competition. Every component reflects K-Tech's obsessive attention to material quality and surface finish — this is not a budget upgrade, it is a race-ready rebuild built to last.

Key Features

  • 25 mm Independent Damping System (25IDS) gives separate, precise control over compression and rebound circuits without one affecting the other.
  • 24 clicks of independent compression adjustment and 30 clicks of independent rebound adjustment allow exceptionally fine damping calibration for every track or road condition.
  • Increased travel over the original cartridge unlocks more suspension stroke and improved wheel control under hard braking and corner entry.
  • Aerospace-grade aluminium construction paired with hard-anodised, super-finished surfaces ensures long service life and consistent damping under sustained heat and load.
  • Approved for Superstock 1000 classes, making this kit a genuine race-legal solution straight from the box.
  • Wide spring range (36-260 series) available separately, allowing precise spring rate selection to match rider weight and riding style.

Build Quality and Materials

The 25IDS system is machined from high-grade aluminium alloy to exacting tolerances, then treated with a hard-anodised super finish that reduces friction and resists wear even after repeated full-stroke compression cycles. The result is a cartridge that moves with exceptional consistency lap after lap, delivering the kind of feedback that lets a rider commit to the braking zone with confidence. At 659.50 mm overall length and a 125 mm stroke, the geometry integrates cleanly into the GSX-R 1000's original fork legs without modification to the lower legs or yokes.

Performance and Tuning

Independent damping adjustment is the defining advantage of the 25IDS design. Compression and rebound circuits operate entirely separately, so dialling in more rebound control to handle a bumpy chicane exit does not inadvertently stiffen the compression response into the next braking zone. K-Tech's suggested baseline settings — 12 clicks compression, 18 clicks rebound, 8 mm preload — give a proven starting point from which riders can build a setup tailored to circuit, tyre compound and personal preference. The 36-260 spring series covers a broad range of rider weights; springs must be ordered separately to ensure the correct rate is matched to the individual.

Fitment and Compatibility

This cartridge kit is designed and validated specifically for the following motorcycle:

  • Suzuki GSX-R 1000 — model years 2012 to 2023

Installation by an authorised K-Tech Service Centre is strongly recommended to ensure correct assembly, bleed procedure and baseline setup.

Specifications

Specification Detail
Part number 125-012-230-020
System 25 mm Independent Damping System (25IDS)
Inner diameter 25 mm
Outer diameter 14 mm
Length 659.50 mm
Stroke 125 mm
Compression adjustment 24 clicks independent
Rebound adjustment 30 clicks independent
Suggested compression setting 12 clicks
Suggested rebound setting 18 clicks
Suggested preload 8 mm
Spring series (sold separately) 36-260 series
Homologation Superstock 1000 approved
Fitment Suzuki GSX-R 1000 (2012–2023)
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...4.208,95 złMárquez Motegi5 TC-64.208,95 złToprak Razgatlıoğlu Rep...4.208,95 złValion TC-1 Red / Grey3.987,19 złA.Marquez73 V3 TC-2 Ale...4.208,95 złMárquez Motegi5 TC-64.208,95 złToprak Razgatlıoğlu Rep...4.208,95 złValion TC-1 Red / Grey3.987,19 złA.Marquez73 V3 TC-2 Ale...4.208,95 złMárquez Motegi5 TC-64.208,95 złToprak Razgatlıoğlu Rep...4.208,95 złValion TC-1 Red / Grey3.987,19 złA.Marquez73 V3 TC-2 Ale...4.208,95 złMárquez Motegi5 TC-64.208,95 złToprak Razgatlıoğlu Rep...4.208,95 złValion TC-1 Red / Grey3.987,19 złA.Marquez73 V3 TC-2 Ale...4.208,95 złMárquez Motegi5 TC-64.208,95 złToprak Razgatlıoğlu Rep...4.208,95 złValion TC-1 Red / Grey3.987,19 złA.Marquez73 V3 TC-2 Ale...4.208,95 złMárquez Motegi5 TC-64.208,95 złToprak Razgatlıoğlu Rep...4.208,95 złValion TC-1 Red / Grey3.987,19 złA.Marquez73 V3 TC-2 Ale...4.208,95 złMárquez Motegi5 TC-64.208,95 złToprak Razgatlıoğlu Rep...4.208,95 złValion TC-1 Red / Grey3.987,19 złA.Marquez73 V3 TC-2 Ale...4.208,95 złMárquez Motegi5 TC-64.208,95 złToprak Razgatlıoğlu Rep...4.208,95 złValion TC-1 Red / Grey3.987,19 złA.Marquez73 V3 TC-2 Ale...4.208,95 złMárquez Motegi5 TC-64.208,95 złToprak Razgatlıoğlu Rep...4.208,95 złValion TC-1 Red / Grey3.987,19 złA.Marquez73 V3 TC-2 Ale...4.208,95 złMárquez Motegi5 TC-64.208,95 złToprak Razgatlıoğlu Rep...4.208,95 złValion TC-1 Red / Grey3.987,19 złA.Marquez73 V3 TC-2 Ale...4.208,95 złMárquez Motegi5 TC-64.208,95 złToprak Razgatlıoğlu Rep...4.208,95 złValion TC-1 Red / Grey3.987,19 złA.Marquez73 V3 TC-2 Ale...4.208,95 złMárquez Motegi5 TC-64.208,95 złToprak Razgatlıoğlu Rep...4.208,95 złValion TC-1 Red / Grey3.987,19 złA.Marquez73 V3 TC-2 Ale...4.208,95 złMárquez Motegi5 TC-64.208,95 złToprak Razgatlıoğlu Rep...4.208,95 złValion TC-1 Red / Grey3.987,19 złA.Marquez73 V3 TC-2 Ale...4.208,95 złMárquez Motegi5 TC-64.208,95 złToprak Razgatlıoğlu Rep...4.208,95 złValion TC-1 Red / Grey3.987,19 zł
Join the paddock — drops & deals, no noise.