Öhlins TTX 25 Cartridge Kit Racing FKR 109 – Honda CBR 1000 RR SP SC77 (2017-2019)

Derived directly from the suspension technology deployed in Moto3, Moto2 and World Superbike competition, the Öhlins FKR 109 TTX 25 Cartridge Kit is a thoroughbred racing upgrade engineered specifically for the Honda CBR 1000 RR SP SC77 (2017–2019). Every component has been built to the exacting standards Öhlins maintains for professional motorsport, delivering a level of damping precision and mechanical refinement that simply cannot be matched by conventional gas-pressure cartridge systems.

Key Features

• TTX technology: a closed, spring-pressurised system that maintains consistent damping performance and eliminates the risk of pressure loss through seal leakage
• Reduced internal pressure via a new piston and 8 mm piston rod — resulting in faster initial response and a genuinely linear damping curve
• Greater fine-tuning range across compression and rebound compared to traditional open-bath cartridges
• Three fork spring rates included (9.0, 9.5 and 10.0 N/mm from the 04744 series) to match the kit precisely to rider weight
• Compatible exclusively with forks fitted with Öhlins FL 910 or FL 926 internals — ensuring OEM-quality fitment integrity
• Developed from World Superbike and Grand Prix machinery: the same engineering DNA, adapted for high-end club and professional racing

Engineering & Build Quality

The FKR system's defining characteristic is its closed, spring-pressurised architecture. Where conventional gas-pressure cartridges rely on a separate nitrogen charge to suppress cavitation, the TTX design uses a controlled spring preload on the oil column. The result is a system that stays balanced across temperature cycles and extended track sessions without the degradation associated with gas pressure loss. The precision-machined 8 mm piston rod works in concert with the new piston design to reduce stiction at the initiation of damper stroke — the phase where many competing systems feel vague or wooden — giving the rider immediate, predictable feedback from the first millimetre of wheel travel.

Track Performance

On the Honda CBR 1000 RR SP SC77, where the standard Öhlins fork already sets a high baseline, the FKR 109 cartridge kit elevates front-end behaviour to an entirely different level. The linear damping characteristic means adjustments made at the clicker are truly proportional — one click of compression or rebound produces the same effect whether the fork is moving slowly through a chicane or working hard under heavy braking. This consistency translates directly into improved traction on corner entry and greater confidence to carry speed deep into braking zones. Fork spring selection from the included 04744-series springs (9.0, 9.5 and 10.0 N/mm) allows the setup to be optimised for the individual rider's weight, as detailed in the installation manual.

Fitment & Compatibility

This kit is designed exclusively for the Honda CBR 1000 RR SP in SC77 specification, covering model years 2017 to 2019. Compatibility is further restricted to machines fitted with Öhlins fork legs FL 910 or FL 926. Installation requires specialist tools and fork oil, neither of which is included; fitting by a qualified suspension workshop is strongly recommended. This product carries no road-use approval and is not permitted for use on public roads under German StVZO regulations or equivalent legislation elsewhere.

Specifications

• Part number: FKR 109
• Technology: Öhlins TTX 25 (closed, spring-pressurised cartridge system)
• Piston rod diameter: 8 mm
• Spring series: 04744
• Included spring rates: 9.0 N/mm, 9.5 N/mm, 10.0 N/mm
• Compatible forks: Öhlins FL 910, FL 926
• Fitment: Honda CBR 1000 RR SP SC77 (2017–2019)
• Intended use: race track only — not approved for road use

Race Use Only.