{"product_id":"spool-performance-paivitetty-kytkinpaketti-mercedes-amg-725-9g-fx-rt","title":"Spool Performance Upgraded Clutch Kit – Mercedes AMG 725 9G FX-RT","description":"\u003cp data-end=\"562\" data-start=\"80\"\u003eSpool Performance's FX-RT clutch upgrade kit is designed for the Mercedes-AMG 725 Series 9G-Tronic transmission, with the aim of significantly increasing torque delivery in high-performance M177 engine projects. The kit is based on Spool's own FX-RT friction material and an increased number of clutch plates in all six clutch packs. The end result is that the transmission's torque delivery is increased to around \u003cstrong data-end=\"493\" data-start=\"473\"\u003e1,700 Nm\u003c\/strong\u003e , while maintaining a controlled shift feel and OEM compatibility.\u003c\/p\u003e\n\u003ch2 data-end=\"605\" data-start=\"569\"\u003e\u003cstrong data-end=\"605\" data-start=\"572\"\u003ePerformance and torque endurance\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-end=\"791\" data-start=\"607\"\u003eThe Mercedes 725 9G transmission is strong as standard, but at torques above ~700 Nm, the OEM clutches start to slip, especially under repeated heavy loads and high oil temperatures.\u003c\/p\u003e\n\u003cp data-end=\"828\" data-start=\"793\"\u003eThe Spool FX-RT series solves this:\u003c\/p\u003e\n\u003cul data-end=\"956\" data-start=\"830\"\u003e\n\u003cli data-end=\"864\" data-start=\"830\"\u003e\n\u003cp data-end=\"864\" data-start=\"832\"\u003e\u003cstrong data-end=\"864\" data-start=\"832\"\u003e+20% higher friction coefficient\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"921\" data-start=\"865\"\u003e\n\u003cp data-end=\"921\" data-start=\"867\"\u003e\u003cstrong data-end=\"921\" data-start=\"867\"\u003eIncreased number of plates in all clutch packages\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"956\" data-start=\"922\"\u003e\n\u003cp data-end=\"956\" data-start=\"924\"\u003e\u003cstrong data-end=\"956\" data-start=\"924\"\u003eTorque endurance up to ~1,700 Nm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"999\" data-start=\"958\"\u003eIncrease in torque duration depending on the gear:\u003c\/p\u003e\n\u003cul data-end=\"1057\" data-start=\"1000\"\u003e\n\u003cli data-end=\"1028\" data-start=\"1000\"\u003e\n\u003cp data-end=\"1028\" data-start=\"1002\"\u003e1–4 gears: approx. \u003cstrong data-end=\"1028\" data-start=\"1019\"\u003e+68%\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1057\" data-start=\"1029\"\u003e\n\u003cp data-end=\"1057\" data-start=\"1031\"\u003e5–9 gears: approximately \u003cstrong data-end=\"1057\" data-start=\"1048\"\u003e+71%\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1177\" data-start=\"1059\"\u003eFactory estimate for 725 transmission is ~1000 Nm → with FX-RT upgrade approximately \u003cstrong data-end=\"1176\" data-start=\"1128\"\u003e1680–1714 Nm clutch limited capacity\u003c\/strong\u003e .\u003c\/p\u003e\n\u003ch2 data-end=\"1217\" data-start=\"1184\"\u003e\u003cstrong data-end=\"1217\" data-start=\"1187\"\u003eClutch kit updates\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\" data-end=\"1415\" data-start=\"1219\"\u003e\n\u003cthead data-end=\"1259\" data-start=\"1219\"\u003e\n\u003ctr data-end=\"1259\" data-start=\"1219\"\u003e\n\u003cth class=\"\" data-col-size=\"sm\" data-end=\"1228\" data-start=\"1219\"\u003eSwitch\u003c\/th\u003e\n\u003cth class=\"\" data-col-size=\"sm\" data-end=\"1236\" data-start=\"1228\"\u003eStandard\u003c\/th\u003e\n\u003cth class=\"\" data-col-size=\"sm\" data-end=\"1249\" data-start=\"1236\"\u003eUpdated\u003c\/th\u003e\n\u003cth class=\"\" data-col-size=\"sm\" data-end=\"1259\" data-start=\"1249\"\u003eIncrease\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-end=\"1415\" data-start=\"1301\"\u003e\n\u003ctr data-end=\"1319\" data-start=\"1301\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1305\" data-start=\"1301\"\u003eA\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1309\" data-start=\"1305\"\u003e4\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1313\" data-start=\"1309\"\u003e6\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1319\" data-start=\"1313\"\u003e+2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"1338\" data-start=\"1320\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1324\" data-start=\"1320\"\u003eB\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1328\" data-start=\"1324\"\u003e4\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1332\" data-start=\"1328\"\u003e7\u003c\/td\u003e\n\u003ctd data-end=\"1338\" data-start=\"1332\" data-col-size=\"sm\"\u003e+3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"1357\" data-start=\"1339\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1343\" data-start=\"1339\"\u003eC\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1347\" data-start=\"1343\"\u003e5\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1351\" data-start=\"1347\"\u003e7\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1357\" data-start=\"1351\"\u003e+2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"1376\" data-start=\"1358\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1362\" data-start=\"1358\"\u003eD\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1366\" data-start=\"1362\"\u003e6\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1370\" data-start=\"1366\"\u003e9\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1376\" data-start=\"1370\"\u003e+3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"1395\" data-start=\"1377\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1381\" data-start=\"1377\"\u003eE\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1385\" data-start=\"1381\"\u003e6\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1389\" data-start=\"1385\"\u003e9\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1395\" data-start=\"1389\"\u003e+3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"1415\" data-start=\"1396\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1400\" data-start=\"1396\"\u003eF\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1404\" data-start=\"1400\"\u003e7\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1409\" data-start=\"1404\"\u003e10\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"1415\" data-start=\"1409\"\u003e+3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp data-end=\"1503\" data-start=\"1417\"\u003eThe increased friction surface distributes the load more evenly and improves thermal management.\u003c\/p\u003e\n\u003ch2 data-end=\"1544\" data-start=\"1510\"\u003e\u003cstrong data-end=\"1544\" data-start=\"1513\"\u003eAdvantages of FX-RT friction material\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-end=\"1643\" data-start=\"1546\"\u003eFX-RT is designed specifically for high torque and fast shifting automatic transmissions.\u003c\/p\u003e\n\u003cul data-end=\"1862\" data-start=\"1645\"\u003e\n\u003cli data-end=\"1679\" data-start=\"1645\"\u003e\n\u003cp data-end=\"1679\" data-start=\"1647\"\u003e20% higher μ → better grip\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1724\" data-start=\"1680\"\u003e\n\u003cp data-end=\"1724\" data-start=\"1682\"\u003eBetter thermal stability during hard driving\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1769\" data-start=\"1725\"\u003e\n\u003cp data-end=\"1769\" data-start=\"1727\"\u003eLess slippage and shift flare\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1812\" data-start=\"1770\"\u003e\n\u003cp data-end=\"1812\" data-start=\"1772\"\u003eSmoother and more controlled engagement\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1862\" data-start=\"1813\"\u003e\n\u003cp data-end=\"1862\" data-start=\"1815\"\u003eProven performance in racing use of the 8HP series\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-end=\"1890\" data-start=\"1869\"\u003e\u003cstrong data-end=\"1890\" data-start=\"1872\"\u003eSeries content\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-end=\"1935\" data-start=\"1892\"\u003eComplete drop-in kit, no machining.\u003c\/p\u003e\n\u003cul data-end=\"2223\" data-start=\"1937\"\u003e\n\u003cli data-end=\"1967\" data-start=\"1937\"\u003e\n\u003cp data-end=\"1967\" data-start=\"1939\"\u003eClutch A pack (6-disc)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1998\" data-start=\"1968\"\u003e\n\u003cp data-end=\"1998\" data-start=\"1970\"\u003eClutch B pack (7-disc)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2029\" data-start=\"1999\"\u003e\n\u003cp data-end=\"2029\" data-start=\"2001\"\u003eClutch C pack (7-disc)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2060\" data-start=\"2030\"\u003e\n\u003cp data-end=\"2060\" data-start=\"2032\"\u003eClutch D pack (9-disc)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2091\" data-start=\"2061\"\u003e\n\u003cp data-end=\"2091\" data-start=\"2063\"\u003eClutch E pack (9-disc)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2123\" data-start=\"2092\"\u003e\n\u003cp data-end=\"2123\" data-start=\"2094\"\u003eClutch F pack (10-disc)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2158\" data-start=\"2124\"\u003e\n\u003cp data-end=\"2158\" data-start=\"2126\"\u003eFX-RT friction plates and steel plates\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2191\" data-start=\"2159\"\u003e\n\u003cp data-end=\"2191\" data-start=\"2161\"\u003eCustom pressure plates\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2223\" data-start=\"2192\"\u003e\n\u003cp data-end=\"2223\" data-start=\"2194\"\u003ePre-sized switch packages\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2292\" data-start=\"2225\"\u003eCompatible with OEM drums, pistons and snap-ring solutions.\u003c\/p\u003e\n\u003ch2 data-end=\"2339\" data-start=\"2299\"\u003e\u003cstrong data-end=\"2339\" data-start=\"2302\"\u003eWho is this series for?\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-end=\"2496\" data-start=\"2341\"\u003e\n\u003cli data-end=\"2379\" data-start=\"2341\"\u003e\n\u003cp data-end=\"2379\" data-start=\"2343\"\u003eM177 engine projects over 1000 hp\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2428\" data-start=\"2409\"\u003e\n\u003cp data-end=\"2428\" data-start=\"2411\"\u003eAMG track cars\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2465\" data-start=\"2429\"\u003e\n\u003cp data-end=\"2465\" data-start=\"2431\"\u003eHigh-boost setups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2496\" data-start=\"2466\"\u003e\n\u003cp data-end=\"2496\" data-start=\"2468\"\u003eRacing and drag builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2578\" data-start=\"2498\"\u003eWhen engine power increases significantly, the transmission is no longer a limiting factor.\u003c\/p\u003e\n\u003ch2 data-end=\"2607\" data-start=\"2585\"\u003e\u003cstrong data-end=\"2607\" data-start=\"2588\"\u003eTechnical benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-end=\"2774\" data-start=\"2609\"\u003e\n\u003cli data-end=\"2641\" data-start=\"2609\"\u003e\n\u003cp data-end=\"2641\" data-start=\"2611\"\u003eTorque endurance up to ~1,700 Nm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2672\" data-start=\"2642\"\u003e\n\u003cp data-end=\"2672\" data-start=\"2644\"\u003eBetter temperature resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2706\" data-start=\"2673\"\u003e\n\u003cp data-end=\"2706\" data-start=\"2675\"\u003eLess slippage and wear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2735\" data-start=\"2707\"\u003e\n\u003cp data-end=\"2735\" data-start=\"2709\"\u003eOEM compatible installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2774\" data-start=\"2736\"\u003e\n\u003cp data-end=\"2774\" data-start=\"2738\"\u003eSmooth and controlled shifting feel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"2781\" data-end=\"2796\"\u003e\u003cstrong data-start=\"2784\" data-end=\"2796\"\u003eFitment\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2798\" data-end=\"2858\"\u003eMercedes-AMG 725-series 9G-Tronic-gearbox mm:\u003c\/p\u003e\n\u003cul data-start=\"2860\" data-end=\"2972\"\u003e\n\u003cli data-start=\"2860\" data-end=\"2879\"\u003e\n\u003cp data-start=\"2862\" data-end=\"2879\"\u003eAMG C63 \/ C63 S\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2880\" data-end=\"2899\"\u003e\n\u003cp data-start=\"2882\" data-end=\"2899\"\u003eAMG E63 \/ E63 S\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2925\" data-end=\"2938\"\u003e\n\u003cp data-start=\"2927\" data-end=\"2938\"\u003eAMG CLS63\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2939\" data-end=\"2960\"\u003e\n\u003cp data-start=\"2941\" data-end=\"2960\"\u003eAMG GLE63 \/ GLS63\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2961\" data-end=\"2972\"\u003e\n\u003cp data-start=\"2963\" data-end=\"2972\"\u003eAMG S63\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2974\" data-end=\"3023\"\u003eand other M177-engine equipped AMG models.\u003c\/p\u003e","brand":"QT Parts","offers":[{"title":"Default Title","offer_id":52402173542747,"sku":"725 9G FX-RT","price":3656.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/9937\/5126\/files\/pic1_copy.png?v=1771335535","url":"https:\/\/www.qtparts.fi\/en-gb\/products\/spool-performance-paivitetty-kytkinpaketti-mercedes-amg-725-9g-fx-rt","provider":"QT Parts","version":"1.0","type":"link"}