{"product_id":"spool-performance-8hp45-8hp50-8hp51-upgraded-billet-7075-t6-d-clutch-drum","title":"Spool Performance 8HP45 \/ 8HP50 \/ 8HP51 upgraded billet 7075-T6 D Clutch Drum","description":"\u003ch1 data-end=\"190\" data-start=\"145\"\u003eSpool Performance 8HP45 \/ 8HP50 \/ 8HP51 upgraded billet 7075-T6 D Clutch Drum\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp data-end=\"629\" data-start=\"232\"\u003eThe factory A380 cast-aluminum D-drum in the ZF 8HP45\/50\/51 is one of the weak links once power levels rise—prone to cracking, distortion, and oil starvation under high load and high RPM clutch events. Spool Performance eliminates that limitation with a \u003cstrong data-end=\"537\" data-start=\"486\"\u003efully CNC-machined billet 7075-T6 D Clutch Drum\u003c\/strong\u003e, engineered for extreme durability and precise hydraulic control in high-horsepower builds.\u003c\/p\u003e\n\u003ch2 data-end=\"685\" data-start=\"631\"\u003e\u003cstrong data-end=\"685\" data-start=\"634\"\u003eWhy 7075-T6? Superior Strength Where It Matters\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-end=\"825\" data-start=\"686\"\u003eMost OEM drums use \u003cstrong data-end=\"727\" data-start=\"705\"\u003eA380 cast aluminum\u003c\/strong\u003e, chosen for cost—not strength. By contrast, \u003cstrong data-end=\"815\" data-start=\"772\"\u003e7075-T6 aerospace-grade billet aluminum\u003c\/strong\u003e delivers:\u003c\/p\u003e\n\u003ch3 data-end=\"872\" data-start=\"827\"\u003e\u003cstrong data-end=\"872\" data-start=\"831\"\u003eMassive Strength Increase Over A380\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-end=\"1078\" data-start=\"873\"\u003e\n\u003cli data-end=\"917\" data-start=\"873\"\u003e\n\u003cp data-end=\"917\" data-start=\"875\"\u003e7075-T6 tensile strength: \u003cstrong data-end=\"915\" data-start=\"901\"\u003e~74–78 ksi\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"953\" data-start=\"918\"\u003e\n\u003cp data-end=\"953\" data-start=\"920\"\u003eA380 cast aluminum: \u003cstrong data-end=\"951\" data-start=\"940\"\u003e~46 ksi\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1078\" data-start=\"954\"\u003e\n\u003cp data-end=\"1078\" data-start=\"956\"\u003eResult: \u003cstrong data-end=\"1037\" data-start=\"964\"\u003eSignificantly higher resistance to cracking, deformation, and fatigue\u003c\/strong\u003e under aggressive clutch pressure spikes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"1132\" data-start=\"1080\"\u003e\u003cstrong data-end=\"1132\" data-start=\"1084\"\u003eWhy not Steel? - Half the Weight of Steel, Similar Strength\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-end=\"1324\" data-start=\"1133\"\u003e\n\u003cli data-end=\"1201\" data-start=\"1133\"\u003e\n\u003cp data-end=\"1201\" data-start=\"1135\"\u003eSteel drums are strong but heavy, increasing rotational inertia.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1201\" data-start=\"1133\"\u003eDeep Anodizing on the 7075-T6 brings its hardness to the same level as the clutch steels preventing teeth deformation. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1324\" data-start=\"1202\"\u003e\n\u003cp data-end=\"1324\" data-start=\"1204\"\u003e7075-T6 offers \u003cstrong data-end=\"1270\" data-start=\"1219\"\u003enear-steel strength at a fraction of the weight\u003c\/strong\u003e, improving drivetrain responsiveness and shift speed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"1359\" data-start=\"1326\"\u003e\u003cstrong data-end=\"1359\" data-start=\"1330\"\u003eBetter Heat Dissipation\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"1490\" data-start=\"1360\"\u003e7075 conducts heat more efficiently than steel, helping stabilize clutch pack temperatures during repeated high-load gear changes.\u003c\/p\u003e\n\u003cp data-end=\"1490\" data-start=\"1360\"\u003e \u003c\/p\u003e\n\u003ch2 data-end=\"1541\" data-start=\"1492\"\u003e\u003cstrong data-end=\"1541\" data-start=\"1495\"\u003ePrecision Billet Machining for Performance\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-end=\"1617\" data-start=\"1542\"\u003eOur D drum is \u003cstrong data-end=\"1606\" data-start=\"1556\"\u003efully CNC-machined from a solid 7075-T6 billet\u003c\/strong\u003e, ensuring:\u003c\/p\u003e\n\u003cul data-end=\"1775\" data-start=\"1618\"\u003e\n\u003cli data-end=\"1661\" data-start=\"1618\"\u003e\n\u003cp data-end=\"1661\" data-start=\"1620\"\u003ePerfect roundness (no casting porosity)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1691\" data-start=\"1662\"\u003e\n\u003cp data-end=\"1691\" data-start=\"1664\"\u003eConsistent wall thickness\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1717\" data-start=\"1692\"\u003e\n\u003cp data-end=\"1717\" data-start=\"1694\"\u003eZero structural voids\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1775\" data-start=\"1718\"\u003e\n\u003cp data-end=\"1775\" data-start=\"1720\"\u003eIncreased clutch apply stability at high line pressures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1859\" data-start=\"1777\"\u003eThis means cleaner, faster clutch engagement with drastically improved durability.\u003c\/p\u003e\n\u003cp data-end=\"1859\" data-start=\"1777\"\u003e \u003c\/p\u003e\n\u003ch2 data-end=\"1922\" data-start=\"1861\"\u003e\u003cstrong data-end=\"1922\" data-start=\"1864\"\u003eImproved Oil Pathways = Better Cooling \u0026amp; Apply Control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-end=\"2027\" data-start=\"1923\"\u003eThe Spool Performance upgraded drum integrates \u003cstrong data-end=\"2015\" data-start=\"1970\"\u003ere-engineered oil feeds and flow channels\u003c\/strong\u003e, providing:\u003c\/p\u003e\n\u003cul data-end=\"2306\" data-start=\"2028\"\u003e\n\u003cli data-end=\"2084\" data-start=\"2028\"\u003e\n\u003cp data-end=\"2084\" data-start=\"2030\"\u003e\u003cstrong data-end=\"2063\" data-start=\"2030\"\u003eMore efficient fluid delivery\u003c\/strong\u003e to the clutch pack\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2218\" data-start=\"2147\"\u003e\n\u003cp data-end=\"2218\" data-start=\"2149\"\u003e\u003cstrong data-end=\"2169\" data-start=\"2149\"\u003eEnhanced cooling\u003c\/strong\u003e, reducing clutch heat soak during hard driving\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2306\" data-start=\"2219\"\u003e\n\u003cp data-end=\"2306\" data-start=\"2221\"\u003e\u003cstrong data-end=\"2252\" data-start=\"2221\"\u003eBetter lubrication coverage\u003c\/strong\u003e, preventing hot spots and friction-surface distortion\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2395\" data-start=\"2308\"\u003eThese improvements directly translate to longer clutch life and higher power tolerance.\u003c\/p\u003e\n\u003ch2 data-end=\"2438\" data-start=\"2397\"\u003e\u003c\/h2\u003e\n\u003cp data-end=\"2621\" data-start=\"2439\"\u003eWhether you’re running upgraded turbos, ethanol, or launching heavy AWD setups, this drum is designed to withstand the load and hydraulic pressure that overwhelm the stock A380 unit.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"Default Title","offer_id":42678988308542,"sku":"SP-8HP5-UDD","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/1123\/3598\/files\/8hp451ddrum1.jpg?v=1775581615","url":"https:\/\/turbotechperformance.com\/products\/spool-performance-8hp45-8hp50-8hp51-upgraded-billet-7075-t6-d-clutch-drum","provider":"TURBO TECH PERFORMANCE","version":"1.0","type":"link"}