{"product_id":"stm-fdu-s040","title":"STM Slipper Clutch for Ducati Panigale 899 (2013-2016) – FDU-S040","description":"\u003cp\u003eFor riders who want a more composed, confidence-inspiring Panigale 899 on both road and track, the STM slipper clutch FDU-S040 is one of the most worthwhile upgrades available. It eliminates the rear-wheel hop and engine over-rev that can unsettle the 899 under hard downshifts, making braking zones safer and more consistent without demanding any change in riding style.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents engine over-rev on downshifts, maintaining stable, predictable power delivery through the drivetrain\u003c\/li\u003e\n\u003cli\u003eReduces rear-wheel hop for improved traction and more precise control when trail-braking\u003c\/li\u003e\n\u003cli\u003eMinimises the trigger impulse of a highside, significantly improving safety on track and spirited road rides\u003c\/li\u003e\n\u003cli\u003eAllows controlled rear-wheel slide for optimised handling balance and increased rider confidence\u003c\/li\u003e\n\u003cli\u003eImproved clutch engagement feel in corners prevents the front end from tucking under deceleration\u003c\/li\u003e\n\u003cli\u003eDiaphragm spring eliminates pressure-plate judder for a smoother, cleaner lever release every time\u003c\/li\u003e\n\u003cli\u003ePatented ball-ramp mechanism governs the slipper function with precision at high engine speeds\u003c\/li\u003e\n\u003cli\u003eSignificant weight saving of approximately 0.7–0.8 kg through a reduction in rotating mass, sharpening overall throttle response and engine dynamics\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eBuild Quality and Technology\u003c\/h2\u003e\u003cp\u003eSTM has developed the FDU-S040 around a patented ball-ramp system that progressively limits back-torque during downshifts. Unlike simpler cam-ramp designs, the ball-ramp geometry delivers a consistent, repeatable release point regardless of engine speed, giving the rider a predictable sensation at the lever. The diaphragm spring replaces a conventional coil-spring stack, removing pressure-plate flutter under rapid throttle transitions and producing the smooth clutch action that STM slipper clutches are known for throughout the paddock.\u003c\/p\u003e\u003cp\u003eThe reduction in rotating mass — approximately 0.7 to 0.8 kg compared to the stock unit — is not just a number on paper. On a motorcycle as responsive as the Panigale 899, lighter rotating inertia translates directly into crisper throttle pick-up and a more agile feel mid-corner. This makes the FDU-S040 a genuinely useful everyday upgrade as much as a track-day tool, improving the 899's character at any pace.\u003c\/p\u003e\u003ch2\u003eRoad and Track Use\u003c\/h2\u003e\u003cp\u003eThe STM FDU-S040 is equally at home on a technical mountain road as it is in a race paddock. On the road, the slipper function takes the stress out of hurried downshifts, whether through an unfamiliar set of bends or in stop-start traffic where lever use is frequent. On track, it provides the consistent back-torque limitation that allows riders to exploit the 899's braking performance fully, without worrying about a snapping rear end upsetting the entry phase. The improved clutch engagement feel through corners is a particularly notable benefit: the tendency of dry-clutch Ducatis to lurch on partial engagement is substantially reduced, allowing smoother, more measured drive out of slow corners.\u003c\/p\u003e\u003ch2\u003eFitment and Compatibility\u003c\/h2\u003e\u003cp\u003eThis clutch is a direct-fit replacement unit for the following model:\u003c\/p\u003e\u003cul\u003e\u003cli\u003eDucati Panigale 899 – model years 2013, 2014, 2015, 2016\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSTM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart number\u003c\/td\u003e\n\u003ctd\u003eFDU-S040\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eSlipper clutch (anti-hopping clutch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eDucati Panigale 899 (2013–2016)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlipper mechanism\u003c\/td\u003e\n\u003ctd\u003ePatented ball-ramp system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring type\u003c\/td\u003e\n\u003ctd\u003eDiaphragm spring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight saving\u003c\/td\u003e\n\u003ctd\u003eApproximately 0.7–0.8 kg reduction in rotating mass vs. stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"STM","offers":[{"title":"Default Title","offer_id":53168705601802,"sku":"FDU-S040","price":1028.05,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/FAP-S040_d3aa8e01-5f14-4e86-a3c4-85b7fe14d595.png?v=1780811715","url":"https:\/\/inter-pace.com\/th\/products\/stm-fdu-s040","provider":"Inter-Pace","version":"1.0","type":"link"}