{"product_id":"ohlins-fkr-121","title":"Öhlins FKR Cartridge Kit Racing TTX 25 FKR 121 – Aprilia RSV4 \/ RF \/ 1100 Factory (2017–2026)","description":"\u003cp\u003eEngineered exclusively for the Aprilia RSV4 RF and RSV4 1100 Factory, the Öhlins FKR Cartridge Kit Racing (TTX 25) FKR 121 transforms your fork into a precision-tuned racing tool. A spring-pressurised, closed cartridge system replaces the conventional gas-pressure architecture, delivering consistent, repeatable damping lap after lap with none of the maintenance headaches of traditional setups.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTTX technology with a newly developed piston and 8 mm piston rod reduces internal pressure for rapid, linear response — the fork tracks and loads with exceptional fidelity.\u003c\/li\u003e\n\u003cli\u003eSpring-pressurised closed system eliminates gas-pressure maintenance concerns and keeps damping character consistent across an entire race day.\u003c\/li\u003e\n\u003cli\u003e120 mm stroke matched precisely to Öhlins fork geometry on the RSV4 platform, ensuring full suspension travel is usable and correctly calibrated.\u003c\/li\u003e\n\u003cli\u003eShips with three 04744-series springs (9.0, 9.5 and 10.0 N\/mm) so you can dial in preload to suit rider weight, tyre compound and circuit demands without ordering additional parts.\u003c\/li\u003e\n\u003cli\u003eExtensive tuning range supports everything from circuit testing through to competitive race configuration, giving your technician real adjustment latitude.\u003c\/li\u003e\n\u003cli\u003eInstallation instructions included; professional fitment by an authorised Öhlins Service Centre is recommended for optimal results.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003ePerformance on Track\u003c\/h2\u003e\u003cp\u003eThe FKR 121 is a motorsport product, designed and certified for closed-circuit competition use only. By reducing the hydraulic pressure acting against the piston, Öhlins achieves a damping curve that responds immediately to small-amplitude inputs — chicane chatter, kerb strikes and mid-corner bumps are absorbed without upsetting chassis balance. The result is improved traction under acceleration and greater front-end confidence under braking, two areas where the RSV4 platform already excels and where marginal gains translate directly into lap times.\u003c\/p\u003e\u003ch2\u003eFitment and Compatibility\u003c\/h2\u003e\u003cp\u003eThe FKR 121 is compatible with the following models and must be paired with the specified Öhlins fork unit. This is a motorsport product — not approved for use on public roads.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAprilia RSV4 RF (2017–2018): requires Öhlins fork FL 930 only.\u003c\/li\u003e\n\u003cli\u003eAprilia RSV4 1100 Factory (2019): requires Öhlins fork FL 960 only.\u003c\/li\u003e\n\u003cli\u003eAprilia RSV4 1100 Factory (2020–2026): requires Öhlins fork FL 963 only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003eFKR 121\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTechnology\u003c\/th\u003e\n\u003ctd\u003eTTX 25 (spring-pressurised closed cartridge)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003ctd\u003e120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePiston rod diameter\u003c\/th\u003e\n\u003ctd\u003e8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded springs\u003c\/th\u003e\n\u003ctd\u003e04744-series: 9.0 \/ 9.5 \/ 10.0 N\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIntended use\u003c\/th\u003e\n\u003ctd\u003eMotorsport \/ closed circuit only — not for public road use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFitment\u003c\/th\u003e\n\u003ctd\u003eAprilia RSV4 RF (2017–2018), RSV4 1100 Factory (2019–2026)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Öhlins","offers":[{"title":"Default Title","offer_id":53168694526218,"sku":"FKR 121","price":2326.62,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/FKR_125.png?v=1780811184","url":"https:\/\/inter-pace.com\/it-it\/products\/ohlins-fkr-121","provider":"Inter-Pace","version":"1.0","type":"link"}