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Failure of the intermediate stub shaft and direct drum are almost inevitable when transmissions are pushed to the limit. To maximize durability and improve clutch capacity in heavy-duty/performance vehicles, Sonnax offers Smart-Tech direct clutch drum and shaft kits, the first upgrade to eliminate every critical weakness. Most failures in these units occur where the direct drum and stub shaft connect. Even other aftermarket upgrades that rely on a heavy-duty shaft will sheer in this area under extreme conditions. Unlike two-piece assemblies, the all-in-one Smart-Tech easily handles the highest horsepower/torque levels. The unique one-piece clutch drum with integrated stub shaft is precision machined from high-strength steel to guarantee there are no splines to strip from the drum or weaken the shaft. The shaft itself is significantly thicker and 2 times stronger than the original. Due to its larger diameter, the integrated shaft must be used with the kit's custom, heavy-duty sun gear. Insufficient holding power is another area where many transmissions fall short, but installing thinner aftermarket steels and backing plates to increase clutch capacity isn't ideal. Those components increase clutch pack flex and heat build-up, making them the primary cause of repeat burn-up. To improve both performance and long-term reliability, the Smart-Tech's custom drum and piston hold an OE backing plate and seven OE frictions for 17 percent more clutch capacity than the six-friction stack-up. Sonnax Smart-Tech direct clutch drum and shaft kits feature: * One-piece design that eliminates weak point where drum splines strip and shafts break * Rugged shaft is 50 percent thicker and twice as strong as OE * Custom drum and piston deliver 17 percent more clutch capacity with optimum protection against burn-up * High-strength drum and shaft are precision-machined from hardened 8620 steel * Unique sun gear is precision-machined from 9310, heat-treated steel
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$754.00
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$770.64
Are you tired of breaking your transmission's input shaft on hard launches at the track? Cure those problems for good with one of these high-strength input shafts from TCI. Made from Vaccu Melt 300 or VASCO 300 steel for maximum durability, these input shafts reduce unwanted breakage and will keep you in the hunt for a win.
Not Yet Reviewed
$788.95
Action Clutch single disc clutch kits contain a range of street to high performance clutch systems built using American materials which are all locally sourced as it has been done for 60 years. Action Clutch staged kits come complete with the clutch disc, pressure plate, throwout/release bearing, pilot bearing/bushing (when applicable), and alignment tool. Action Clutch Stage 3 clutch kits for heavy-duty street and occasional drag/road/drift racing offer a 170 percent increased holding capacity. They utilize extremely durable, high performance MIBA sprung ceramic discs and feature a single diaphragm heavy-duty pressure plate with reinforced drive straps for increased durability. They are available in a 4- and 6-puck configuration with the 4-puck being the more aggressive of the two. Stage 3 kits are engineered for low/mild horsepower vehicles, and create quick engagement as well as clutch chatter, which should be minimal once proper break-in is completed. Select the kit designed for your vehicle. Pressure plate and clutch disc features: * All clutch covers feature ductile iron friction plate * Reinforced heavy-duty drive straps * 4-stage, heat-treated diaphragm spring * 100 percent dynamically spin balanced * American grade rivets * Full enclosed spring retainers * Sprung hub for easy engagement
Not Yet Reviewed
$828.71
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$1,053.96
Action Clutch single disc clutch kits contain a range of street to high performance clutch systems built using American materials which are all locally sourced, just as it has been done for 60 years. Each stage kit has its own advantages as well as its own formulated friction materials. As you move up in stage, the clamping force of the pressure plate increases to provide more torque capacity, while maintaining a comfortable pedal feel. Action Clutch's Stage 5 clutch kits for race applications and heavy track use feature their extremely durable high performance MIBA sprung ceramic disc available in 4- and 6-puck styles with the 4-puck being the more aggressive. These kits offer nearly double the clamping force of the Stage 3 and 4 kits, increasing torque capacity. Engineered for low/mild horsepower vehicles, Stage 5 kits create quick engagement, as well as clutch chatter, which should be minimal once proper break-in is completed. Pressure plate and clutch disc features: * Clutch covers feature ductile iron friction plate * Reinforced heavy-duty drive straps for increased durability * 4-stage, heat-treated diaphragm spring * 100 percent dynamically spin balanced * American grade rivets * MIBA friction ceramic material pads * Full enclosed spring retainers * Sprung hub for easy engagement In the box: * Stage 5 clutch disc * Dual clamp load HD pressure plate * Release bearing * Pilot bearing/bushing (when applicable) * Clutch alignment tool * Information sheet * Action Clutch swag
Not Yet Reviewed
$824.46
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$1,053.96
Action Clutch single disc clutch kits contain a range of street to high performance clutch systems built using American materials which are all locally sourced, just as it has been done for 60 years. Each stage kit has its own advantages as well as its own formulated friction materials. As you move up in stage, the clamping force of the pressure plate increases to provide more torque capacity, while maintaining a comfortable pedal feel. Action Clutch Stage 4 clutch kits are designed for heavy-duty drag, road, and drift racing. These kits have an on-and-off engagement, are recommended strictly for race purposes, and are engineered for low/mild horsepower vehicles. These Stage 4 MIBA unsprung ceramic kits create quick engagement, as well as some clutch chatter, which should be minimal once proper break-in is completed. Available in a 4- and 6-puck configuration, the 4-puck is more aggressive. After each kit is assembled, it goes through multiple quality checks, ensuring the best quality for you. Select the kit designed for your vehicle. Pressure plate and clutch disc features: * MIBA Friction ceramic material pads * Reinforced heavy-duty drive straps for increased durability * 4-stage, heat-treated diaphragm spring * 100 percent dynamically spin balanced * American grade rivets * Rigid hub type In the box: * Stage 4 clutch disc * Single diaphragm HD pressure plate * Release bearing * Pilot bearing/bushing (when applicable) * Clutch alignment tool * Information sheet * Action Clutch swag
Not Yet Reviewed
$828.71
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$1,053.96
Action Clutch single disc clutch kits contain a range of street to high performance clutch systems built using American materials which are all locally sourced, just as it has been done for 60 years. Each stage kit has its own advantages as well as its own formulated friction materials. As you move up in stage, the clamping force of the pressure plate increases to provide more torque capacity, while maintaining a comfortable pedal feel. Action Clutch's Stage 6 clutch kits for heavy-duty drag, road, and drift racing utilize their extremely durable high performance MIBA sprung ceramic disc available in 4- and 6-puck styles with the 4-puck being the more aggressive. These kits offer nearly double the clamping force of the Stage 3 and 4 kits, increasing torque capacity. Engineered for low/mild horsepower vehicles, Stage 6 kits create a quick engagement as well as some clutch chatter, which should be fairly minimal once proper break-in is completed. Pressure plate and clutch disc features: * Clutch covers feature ductile iron friction plate * Reinforced heavy-duty drive straps for increased durability * 4-stage, heat-treated diaphragm spring * 100 percent dynamically spin balanced * American grade rivets * MIBA friction ceramic material pads * Rigid hub-type In the box: * Stage 6 clutch disc * Dual clamp load HD pressure plate * Release bearing * Pilot bearing/bushing (when applicable) * Clutch alignment tool * Information sheet * Action Clutch swag
Not Yet Reviewed
$824.46
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$1,053.96
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