K-TECH – British Precision Racing Cartridge Systems

K-Tech is a leader in BSB, MotoAmerica, Isle of Man TT and international road racing, known for ultra-precise damping control, durability and accessible serviceability.

About K-Tech Cartridge Technology

• 25SSK RDS (Road • Dynamic • System)
  High-performance road/track cartridge with independent compression & rebound circuits and excellent mid-corner support.

• 25SSK IDS (Independent Damping System)
  Developed for modern lightweight and middleweight platforms—ideal for riders needing predictable damping at lean.

• 20mm IDS Cartridges
  Perfect for middleweight and naked bikes requiring improved control without race-level stiffness.

K-Tech Cartridge Variants & Compatible Motorcycles

25SSK RDS (25mm Road/Track)

Common motorcycles:

• Suzuki GSX-R1000 (2012–2018, incl. +15mm extended caps)

• Yamaha R6

• Yamaha R1

• Kawasaki ZX-10R / ZX-6R

• Honda CBR1000RR / 600RR

• Triumph Daytona & Street Triple

• Ducati Panigale V4 / V2 (Showa)

• KTM RC8 / Duke models

• BMW S1000RR

• MV Agusta F3 / F4

25SSK IDS (Independent Damping System)

Applications include:

• Aprilia RS660

• Yamaha MT-07 / MT-09 / XSR900

• Triumph Street Triple

• Middleweight supersport platforms

20mm IDS Cartridges

Designed for:

• Kawasaki ZX-4RR (2023–2024)

• Yamaha MT-09 / XSR900 / FZ-09

• Middleweight road bikes needing controlled damping without excessive stiffness

Example bike fitments by K-Tech family

• 20IDS examples (smaller / mid bikes): Yamaha FZ-09 / MT-09 / XSR900 — 20IDS kits offer adjustability where OE forks lack settings.

• 25IDS / 25SSK examples (middleweight / modern sport): Aprilia RS660 (2021+), Yamaha R6 (2016+), Honda/Cbr middleweights — 25IDS and 25SSK kits are available as vehicle-specific cartridges.

• RDS / 25SSK RDS examples (superbike / high performance): Suzuki GSX-R1000 (2012–2018), Yamaha R1 families, and other sportbikes — RDS kits provide larger oil flow and race-grade damping.

• 20DDS (Small): Small sport bikes, mini GP, commuter performance — e.g., lightweight singles and small twins.

• 25DDS (Mid): Middleweight sport / naked / streetfighter — ideal for bikes that see both road and occasional track use.

• 30DDS (Large): Full-blown sportbikes, litre class superbikes, heavy sport-tourers requiring maximum damping authority.

Suggested Bike Categories (guidance only)

• 20DDS (Small): Small sport bikes, mini GP, commuter performance — e.g., lightweight singles and small twins.

• 25DDS (Mid): Middleweight sport / naked / streetfighter — ideal for bikes that see both road and occasional track use.

• 30DDS (Large): Full-blown sportbikes, litre class superbikes, heavy sport-tourers requiring maximum damping authority.

Note: Variant choice depends on fork leg diameter, spring rate and rider+load. Use the Fitment checklist below.

Why riders choose K-Tech
K-Tech cartridges are engineered in the UK, offering precise independent compression & rebound adjustment, quality machining, and both universal and model-specific options — making K-Tech popular for both track riders and tuned street bikes. 

Buyer Fitment Checklist (must read before ordering)

• Confirm your bike’s model, year and exact fork leg specification (many K-Tech kits are specific to sub-year ranges).

• Decide on IDS vs RDS based on desired damping characteristics and fork capability.

• Check if springs are included — some kits list springs sold separately. 

• Verify axle, rotor and caliper clearance after fitment; professional installation is recommended.

Need help? Provide your bike’s make, model and year and we’ll recommend the correct K-Tech cartridge and spring rate.