Hays Street 650 Clutch Kit

The Hays Street 650 Clutch Kit is a race-proven street/strip performance clutch solution engineered for serious enthusiasts running highly modified, high-output engines. Rated for up to 650 naturally aspirated horsepower — and up to 600 HP for forced induction or nitrous combinations — the Street 650 line delivers the holding power demanded by aggressive builds without sacrificing everyday street drivability.

At the core of every Street 650 kit is a high-performance clutch disc featuring a sintered metallic friction surface engineered to provide a controlled degree of slip on launch, preventing the harsh, jarring engagement associated with full-race paddle-style discs. Select variants utilize a dual-friction disc that pairs sintered metallic and organic friction surfaces, excelling at heat dissipation, slippage resistance, and smooth, controlled engagement under demanding conditions. The disc's upgraded 8-spring hub with polyurethane encapsulated damper springs handles up to three times the shock load of standard coil springs, providing critical drivetrain protection under aggressive use.

Each Street 650 kit includes an upgraded heavy-duty pressure plate delivering up to 30% more clamping force than a stock OE unit. Reinforced steel-back friction material contributes additional clamping force, superior durability, and improved heat dissipation for extended service life across both street and track environments.

Key Features:

• Rated up to 650 HP naturally aspirated; up to 600 HP for forced induction and nitrous applications
• True street/strip design built for spirited street driving and frequent track use
• Upgraded heavy-duty pressure plate with up to 30% more clamping force than stock OE
• Sintered metallic disc friction surface for smooth, controlled engagement on launch
• Dual-friction disc variants combine sintered metallic and organic surfaces for optimal heat resistance and holding capacity
• 8-spring hub with polyurethane encapsulated damper springs handles up to 3x the shock load of standard disc springs
• Reinforced steel-back friction material for added clamping force, durability, and heat management
• Complete kits include pressure plate, clutch disc, throwout bearing, alignment tool, and installation instructions
• Available across a wide range of GM, Ford, Chrysler, AMC, and Jeep applications

Hays has earned a decades-long reputation in performance drivetrain components, and the Street 650 line is a direct reflection of that heritage. Whether you're building a classic muscle car, a performance truck, or a dedicated street/strip machine, the Street 650 delivers the clamping force and thermal endurance to meet the demands of both daily driving and track duty. Select the correct kit for your specific application from the available variants below.