K-Tech 25IDS Open Cartridge Kit Honda CBR 600 RR (2013–2020) – 125-013-130-010

Engineered from aerospace-grade aluminium and finished to an exacting hard-anodised standard, the K-Tech 25IDS Open Cartridge Kit brings genuine race-derived suspension engineering to the Honda CBR 600 RR. Designed specifically around the geometry of the 2013–2020 CBR 600 RR's original fork, this 25 mm Independent Damping System cartridge represents a clear step forward from the factory unit in both adjustability and longevity.

Key Features

• 25 mm Independent Damping System (25IDS) — compression and rebound circuits tuned entirely independently for precise, repeatable setup changes
• 24 clicks of independent compression adjustment and 30 clicks of independent rebound adjustment for exceptionally fine-grained damping control
• Increased stroke over the original cartridge, improving suspension compliance and feel over varied surfaces
• Hard-anodised and super-finished components for outstanding durability and consistent damping performance across the full service life
• Aerospace aluminium construction keeps unsprung weight low without compromising structural integrity
• Compatible with the full K-Tech 36-260 spring range — available separately to suit rider weight and riding style

Design, Finish and Heritage

K-Tech Suspension has built its reputation supplying damping hardware to World Superbike and British Superbike teams, and the 25IDS Open Cartridge Kit reflects that heritage directly. The hard-anodised finish is not merely cosmetic — it creates a surface hardness that resists scoring from contaminants in the fork oil and maintains dimensional accuracy over thousands of kilometres. The super-finished internal surfaces reduce friction across the full stroke, producing the linear, predictable feel that separates a genuinely well-set suspension from one that merely softens bumps.

The open cartridge design retains compatibility with the CBR 600 RR's original fork tubes and outer components, making this an upgrade that transforms the riding experience without requiring a complete fork rebuild. Every detail — from the tight tolerances on the 25 mm inner diameter to the carefully determined 659.75 mm overall length — has been matched to the Honda's factory specification.

Performance and Adjustability

The 25IDS philosophy separates compression and rebound damping completely, so changing one circuit never disturbs the other. Starting from the suggested baseline settings (12 clicks compression, 18 clicks rebound, 8 mm preload, 155 mm oil/air cap height), riders can dial in their preferred balance for road, track day, or sprint circuit use. The 125 mm stroke — increased beyond the stock cartridge — provides additional wheel travel under heavy braking and over surface irregularities, reducing fatigue and improving corner-entry confidence on the CBR 600 RR's front end.

Fitment and Compatibility

This kit is a direct-fit upgrade for the Honda CBR 600 RR covering model years 2013 through 2020. It is designed for use with the 36-260 spring series, which must be ordered separately. Installation by an authorised K-Tech Service Centre is recommended to ensure correct setup and to preserve the warranty on the cartridge components.

Specifications

• Spring series: 36-260 (ordered separately)
• Inner diameter: 25 mm
• Outer diameter: 14 mm
• Length: 659.75 mm
• Oil / air cap: 155 mm (suggested)
• Stroke: 125 mm
• Compression clicks: 12 (suggested baseline)
• Rebound clicks: 18 (suggested baseline)
• Preload: 8 mm (suggested)
• Fitment: Honda CBR 600 RR (2013–2020)
• Part number: 125-013-130-010