Alright, let’s talk about the ACT Heavy Duty/Performance Street Sprung Kit, specifically the MB1-HDSS. If you’re looking to up your clutch game, this is the kit that’s been a favorite among folks who know their way around a gear shifter. It features ACT’s renowned Heavy Duty pressure plate, which is designed to handle more than just your average driving. The diaphragm design here is no joke—it ramps up clamp load and minimizes deflection, which means you’re getting a clutch that’s built to last.

What’s cool about this setup is that each diaphragm goes through a four-stage heat-treating process. Yeah, that’s right—this isn’t just some off-the-shelf part. This extra care means you can expect solid performance even when you’re pushing the limits. The precision cover stampings add a level of rigidity that keeps everything in check, so you won’t have to worry about it falling apart on you.

Now, let’s get into the Performance Street disc. It’s made from premium organic materials with a high copper content, which is great for heat transfer. This means less fade during those spirited drives. Plus, the steel-backed lining gives it added durability and burst strength. You’ll notice the reduced marcel, which translates to quicker shift action—perfect for those times when you need to be on your game. It pairs beautifully with the ACT pressure plate for a reliable and strong setup.

Install Instructions:

• For Instructions CLICK HERE

Features:

• Light to moderate pedal effort, so you’re not working too hard to shift.
• Smooth engagement with just the right amount of gear rattle—nothing over the top.
• Longer friction life thanks to that clever diaphragm design.
• Engineered with care, meaning it’s balanced and ready for both street and race use.
• Each unit is clamp load tested and dynamically balanced, so you can trust it at high RPMs.

Specifications:

• Clutch Master Cylinder Included: No
• Grease Included: Yes
• Grade Type: Performance
• Flywheel Included: No
• Pilot Bushing Included: No
• Pressure Plate Type: Heavy Duty
• Release Bearing Included: Yes
• Clutch Disc Diameter: 8.8 in (224 mm)
• Disc Material: Organic
• Input Spline Quantity: 20
• Input Shaft Diameter: 0.875 in
• Alignment Tool Included: Yes
• Disc Type: Sprung Solid
• Pressure Plate Bolts Included: No
• Clutch Slave Cylinder Included: No
• Flywheel Bolts Included: No
• Pilot Bearing Included: No
• Product Weight: 11.9 lbs
• Torque Capacity: 320 ft/lbs
• Torque Capacity Over OE: 0.27

Products Fitment:

• Chrysler Sebring 2003-2004
• Dodge Stealth 1991-1996
• Eagle Summit 1992-1994 & 1996
• Eagle Talon 1991-1998
• Mitsubishi 3000GT 1991-1999
• Mitsubishi Eclipse 1990-2005
• Mitsubishi Expo 1992-1995
• Mitsubishi Galant 1991-1998
• Plymouth Colt 1992-1994
• Plymouth Laser 1990-1994