{"product_id":"spool-performance-mercedes-amg-725-9g-fx-rt-upgraded-clutch-kit","title":"Spool Performance – Mercedes AMG 725 9G FX-RT Upgraded Clutch Kit","description":"\u003ch1\u003e\u003cstrong\u003eSpool Performance – Mercedes 725 9G FX-RT Upgraded Clutch Kit \u003c\/strong\u003e\u003c\/h1\u003e \u003cp\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eRated for up to 1,700 Nm input torque\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Mercedes 725 9G transmission is a strong unit from the factory—but once torque levels push past the mid-700 Nm, the stock frictions and limited plate counts begin to slip, especially under repeated high-load, high-temperature conditions.\u003c\/p\u003e\n\u003cp\u003eSpool Performance has developed a complete upgraded clutch system for the 725 9G using our \u003cstrong\u003eFX-RT high-coefficient, high-energy friction material\u003c\/strong\u003e, the same proven technology that transformed the 8HP50 platform into a competition worthy transmission.\u003c\/p\u003e\n\u003cp\u003eThis new kit increases both the \u003cstrong\u003ecoefficient of friction (+20%)\u003c\/strong\u003e and the \u003cstrong\u003eclutch counts across all six elements\u003c\/strong\u003e, dramatically increasing the torque capacity of every gear.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eClutch Count Increases\u003c\/strong\u003e\u003c\/h2\u003e \u003cdiv tabindex=\"-1\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eClutch\u003c\/th\u003e\n\u003cth\u003eStock\u003c\/th\u003e\n\u003cth\u003eUpgraded\u003c\/th\u003e\n\u003cth\u003eIncrease\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eA\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e+2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003e+3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eC\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003e+2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eD\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e9\u003c\/td\u003e\n\u003ctd\u003e+3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eE\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e9\u003c\/td\u003e\n\u003ctd\u003e+3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eF\u003c\/td\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e+3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e \u003cp\u003eCombined with the FX-RT friction upgrade, the resulting torque-capacity increases are substantial.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eTorque Capacity Gains (Per Gear)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBased on clutch engagement logic for the 9G and the combined friction + plate-count increases:\u003c\/p\u003e \u003cdiv tabindex=\"-1\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eGear\u003c\/th\u003e\n\u003cth\u003eEngaged Clutches\u003c\/th\u003e\n\u003cth\u003eTorque Increase\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1st\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eB C E\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e+68%\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e2nd\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eC D E\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e+68%\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e3rd\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eB C D\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e+68%\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e4th\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eB C F\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e+68%\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e5th\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eB D F\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e+71.4%\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e6th\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eD E F\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e+71.4%\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e7th\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eB E F\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e+71.4%\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e8th\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA E F\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e+71.4%\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e9th\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA B F\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e+71.4%\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e \u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eFinal Torque Rating\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe factory 725 9G is rated for \u003cstrong\u003e1000 Nm\u003c\/strong\u003e.\u003cbr\u003eWith the FX-RT clutch packs installed:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e1st–4th gear clutch-limited rating:\u003c\/strong\u003e \u003cstrong\u003e≈1680 Nm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e5th–9th gear clutch-limited rating:\u003c\/strong\u003e \u003cstrong\u003e≈1714 Nm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOverall clutch-pack system capability:\u003c\/strong\u003e \u003cstrong\u003e≈1,700 Nm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis upgrade raises the clutch-limited torque threshold by \u003cstrong\u003e+68–71%\u003c\/strong\u003e, depending on gear.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eWhy FX-RT?\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eOur FX-RT friction material was engineered specifically for high-torque, high-energy, fast-shift transmissions. It has been proven in our \u003cstrong\u003e8HP50 kits\u003c\/strong\u003e, where customers reliably push 900–1000 Nm. Now the same technology elevates the Mercedes 725 9G into a new performance class.\u003c\/p\u003e\n\u003cp\u003eBenefits include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e20% higher μ for dramatically improved static and dynamic holding power\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigher thermal stability under repeated high-load upshifts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduced shift flare and reduced clutch slip\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSmoother, more consistent clutch apply characteristics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eWho This Kit Is For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe Spool Performance 725 9G upgraded clutch kit is ideal for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-power M177 builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGLE63 \/ GLS63 high-boost setups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTuned E63 \/ S63 running hybrid turbos\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTrack-driven or heavy-use AMG applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAnyone targeting \u003cstrong\u003e1000+ crank hp\u003c\/strong\u003e with headroom\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eYour 725 9G is no longer the limiting factor. With Spool Performance FX-RT friction technology and increased clutch capacity, the transmission becomes capable of safely holding \u003cstrong\u003e~1700 Nm\u003c\/strong\u003e, giving your AMG the drivetrain headroom it needs to push big-power, high-boost builds confidently and repeatedly.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cp\u003eThe Spool Performance 725 9G FX-RT Clutch Upgrade Kit includes all components required for a complete drop-in installation. No machining or custom fabrication is needed.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch3\u003eClutch A [B08] Pack (6-plate upgrade)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e6 x FX-RT friction discs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e6 x Upgraded Steel plates\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 x Custom Pressure Plate\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eClutch B [B05] Pack (7-plate upgrade)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e7 x FX-RT friction discs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e7 x steel plates\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 x Custom Pressure Plate\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eClutch C [B06] Pack (7-plate upgrade)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e7 x FX-RT friction discs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e7 x steel plates\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 x Custom Pressure Plate\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eClutch D [K81] Pack (9-plate upgrade)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e9 x FX-RT friction+steel internal spline discs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e9 FX-RT friction+steel external spline discs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 x Custom Pressure Plate\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eClutch E [K38] Pack (9-plate upgrade)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e9 x FX-RT friction discs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e9 x steel plates\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 x Custom Pressure Plate\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eClutch F [K27] Pack (10-plate upgrade)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e10 x FX-RT friction discs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e10 x steel plates\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 x Custom Pressure Plate\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEverything is pre-measured and packaged by clutch pack to ensure consistent clearances and simplified assembly. The kit is fully compatible with factory drums, pistons, and snap-ring locations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Spool Performance","offers":[{"title":"Default Title","offer_id":47878178930844,"sku":"SP-AMG725-CK","price":3499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0473\/3206\/5436\/files\/pic1_copy.jpg?v=1791771266","url":"https:\/\/daroracing.com\/products\/spool-performance-mercedes-amg-725-9g-fx-rt-upgraded-clutch-kit","provider":"Daro Racing","version":"1.0","type":"link"}