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SPEC Stage 4 clutch kits are solid hub versions of their Stage 3 clutches. Each hub is solid with eight rivets and the assembly is heat-treated for strength and durability. They are available in a 3, 4, and 6-puck configurations. Use a 3-puck for the lightest option or a 6-puck for the smoothest engagement. The 4-puck kit is a good compromise for both. Street-drivable in 6-puck configuration, but not street friendly due to the rigid hub. Additional features of SPEC Stage 4 clutch kits: * High-clamp pressure plate * Carbon-graphite friction material * High-torque solid hub and disc assembly * Bearing and tool kit included * Great for road racing, rally, drag racing, drifting, and pulling
( 3 )
$980.10
SPEC Stage 1 clutch kits are designed for street, drag race, drifting, road race, rally, pulling, and autocross use. They feature integrally molded carbon-Kevlar® based, high performance organic linings that offer smooth engagement and excellent life. These linings have an integrally bonded steel backing for strength under high clamp loads and temperatures. Hubs are double-sprung with spring cover reliefs for flexibility and heat-treated components for strength and durability. Nearly a thousand different kits are available for countless applications, from the 1940s and up. Additional features of SPEC Stage 1 clutch kits: * High-clamp pressure plate * Steel-backed and multi-compound woven organic material * High-torque sprung hub and disc assembly * Best for street and many track and off-road applications
( 18 )
$899.10
SPEC Stage 2 clutch kits are designed for street, drag race, pulling, and autocross use. They feature segmented or full-faced Kevlar® discs with steel backings. These linings deliver excellent drivability like SPEC Stage 1 clutches, but with slightly longer life and higher torque capacity. The hubs are double-sprung with spring cover reliefs for flexibility and heat-treated components for strength and durability. Nearly a thousand models are available; order the kits recommended for your vehicle. Additional features of SPEC Stage 1 clutch kits: * High-clamp pressure plate * Pure Kevlar® friction material * High-torque sprung hub and disc assembly * Bearing and tool kit included (where applicable)
( 17 )
$980.10
SPEC Stage 3 clutch kits are designed for street, drag race, pulling, and autocross use. They feature a carbon semi-metallic 6-puck sprung hub disc that has been the leading puck clutch in drivability, life, and torque capacity. These units are intended for street and race cars that require an aggressive but streetable engagement and high torque capacity. Their hubs are double-sprung with spring cover reliefs for flexibility and heat-treated components for strength and durability. Additional features of SPEC Stage 3 clutch kits: * Also available in 3-puck configuration * High-clamp pressure plate * Carbon-graphite friction material * High-torque sprung hub and disc assembly * Bearing and tool kit included * Also great for road racing, rally, and drifting
( 18 )
$980.10
SPEC Stage 3+ clutch kits are primarily intended for street use, drag racing, pulling, and autocrossing. As the flagship stage for a high-powered street or race car that requires a manageable and friendly engagement, Stage 3+ clutch kits feature carbon-graphite full-faced material that offers unparalleled life, friction co-efficient, and drivability in one package. Their hubs are double-sprung with spring cover reliefs for flexibility and heat-treated components for strength and durability. Additional features of SPEC Stage 3+ clutch kits: * High-clamp pressure plate * Carbon semi-metallic friction material * High-torque sprung hub and disc assembly * Bearing and tool kit included * Also great for road racing, rally, and drifting
( 4 )
$1,070.10
SPEC Stage 2 Plus clutch kits are designed for street, drag race, pulling, and autocross use. They feature a multi-friction disc in a full-faced configuration with carbon semi-metallic material on one side and Kevlar® on the other. Bridging the gap between SPEC Stage 2 and Stage 3 clutch kits, the 2+ offers drivability and engagement quality characteristics of the Stage 2, but with a 15 to 20 percent higher torque capacity. Hubs are double-sprung with spring cover reliefs for flexibility—and heat-treated components for strength and durability. More than 700 models are available for vehicle-specific applications. Additional features of SPEC Stage 2 Plus clutch kits: * High-clamp pressure plate * Hybrid carbon-graphite and Kevlar® friction material * High-torque sprung hub and disc assembly * Bearing and tool kit included * Also great for road racing, rally, and drifting
( 7 )
$1,034.10
Using the latest technology, J.W. Performance has come up with these Ultra-Bell bellhousings. Built rugged and certified, these flexplate shields allow for special motor and transmission combinations to be easily mated together. Manufactured from one-piece cast aluminum, these Ultra-Bells are five times stronger than stock bellhousings, which makes them capable of withstanding even the most severe tire shake and can fit under most stock floorboards. Order the Ultra-Bell bellhousing designed to fit your application.
( 79 )
$760.06
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$817.57
Upgrade your transmission with RevMax billet steel center support and 4th clutch housings. Due to their medium hardness steel construction, these components will not allow the steel plates to groove into them. They feature thicker 4C snap ring groove that due to solid billet construction will not blow out under any condition. Additionally, the RevMax center supports have a tighter fit into the case grooves and between the center support and case, which reduces flex and strengthens the entire internal assembly. In addition to solving material and rigidity issues, the RevMax support also increases clutch surface area by 50 percent. Their support features five clutches vs. the factory three. The 4C piston is made of 6061 billet aluminum and features a solid face apply area compared to the factory bonded piston with a razor thin apply face. The RevMax support will also retrofit into any 68RFE and work with stock pistons and clutches if you prefer. The support comes with the billet piston, custom pressure plate and clutches and steels. Note: The center support kit does not include billet 2c apply piston, as this is part of the RevMax performance rebuild kits.
Not Yet Reviewed
$899.00
Summit Bucks
Sonnax offers a variety of automatic transmission rebuild components, including Smart-Tech overdrive clutch housing kits. Dodge trucks pulling heavy loads or with boosted power are at high risk for overdrive burnup due to the stock transmission's insufficient clutch capacity and fragile OE clutches. Even small amounts of heat and extra torque will push the thin (.034 in.), single-sided clutches over the edge, distorting the clutch pack. The fact is, any distortion of the clutch pack takes the clearance out of spec and makes overdrive clutch burnup inevitable. This Sonnax kit will keep hardworking trucks on the road! The unique billet aluminum housing increases overdrive apply area by 16 percent and holds a physically taller clutch pack. The 2X thicker steels increase clutch pack steel mass by 28 percent for maximum heat dissipation; and the double-sided BorgWarner clutch frictions are optimized for the 68RFE OD application and are custom-made for the Sonnax kit. This guarantees an unrivaled combination of squawk resistance and maximum clutch capacity for any truck. This groundbreaking kit is the only top-of-the-line upgrade that eliminates clutch problems without relying on valve body/pump modifications or adding the expense of extra components. Details at a glance: * Modified housing holds physically taller clutch pack for 20 percent more clutch capacity * 16 percent more OD apply area for firmer, more controlled shifts * 2X thicker steels and double-sided clutches increase steel mass by 28 percent for maximum heat dissipation * Custom BorgWarner clutches for maximum capacity with state-of-the-art squawk resistance * Bolt-on anchor plate eliminates clutch pack flexing and distortion that contribute to heat build-up * Combine with Sonnax line pressure booster kit RFE-LB1 for even higher levels of performance * Contents: -- Overdrive/reverse housing -- Lip seal -- Adapter sleeve -- UD/OD reaction plate -- Steel clutch plates (5) -- Friction clutch plates (6) [custom BorgWarner] -- Anchor late shims (2) -- Bolt-on anchor plate -- Screws (18)
Not Yet Reviewed
$860.40
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