Öhlins FKR Cartridge Kit Racing TTX 25 FKR 123 – Kawasaki Ninja ZX-6R 636 (2013–2026)

The Öhlins FKR Cartridge Kit Racing (TTX 25) FKR 123 is a purpose-engineered fork upgrade for the Kawasaki Ninja ZX-6R 636, covering model years 2013 through 2026. Developed exclusively for racing use, this cartridge system meets the exacting demands of track riders who need absolute consistency lap after lap — a product built to Öhlins' motorsport-grade engineering standards, not adapted from a road compromise.

Key Features

• Spring-pressurised closed system eliminates pressure loss and ensures repeatable, dependable damping performance across every session.
• TTX technology paired with a newly developed piston and 8 mm piston rod delivers instantaneous response and a precisely linear damping characteristic.
• Extensive tuning range opens up fine-grained adjustment of traction and chassis stability to suit circuit conditions and rider style.
• Ships with three spring rates — 9.0, 10.0, and 9.5 N/mm (04744 series) — giving immediate setup flexibility without additional expenditure.
• Maintenance-friendly construction simplifies servicing at the track or in the workshop, minimising downtime between race weekends.
• Installation guide included; Öhlins recommends fitting by an authorised Öhlins Service Centre for optimal results.

TTX Technology Explained

The TTX (Twin Tube X) cartridge architecture separates compression and rebound circuits more effectively than conventional single-tube designs. The spring-pressurised closed system maintains consistent oil pressure under all operating temperatures, preventing cavitation and the associated damping fade that can compromise corner-entry confidence. The 8 mm piston rod stiffens the overall assembly, reducing flex and translating rider inputs into precise chassis movement — critical when chasing tenths on a tight circuit like the ZX-6R's natural habitat.

Performance on Track

Fitted to the Kawasaki Ninja ZX-6R 636, the FKR 123 transforms front-end feel by bringing race-specification damping to a chassis that responds exceptionally well to suspension tuning. The linear damping curve means setup changes produce predictable outcomes, so riders can work methodically through spring preload and damping adjustments rather than chasing mysterious handling characteristics. Improved traction and stability under braking and through corner sequences are the direct result — qualities that matter whether you are a club racer or a seasoned circuit competitor.

Fitment and Compatibility

The Öhlins FKR 123 is designed specifically for the following model:

• Kawasaki Ninja ZX-6R 636 — model years 2013 to 2026

This is a motorsport product. It does not carry a parts certificate (Teilegutachten) for Germany and is not approved for use on public roads. Fitting must comply with the regulations of the relevant motorsport authority and circuit.

Specifications