ACT Sport Clutch Kits are crafted from CNC-machined parts and computer-balanced with no loose pieces to wear out or rattle for quiet, trouble-free operation. These products are designed to afford a clamp load increase up to 40% with moderate pedal feel, and many of these new, not rebuilt, units are SFI-certified to ensure safety.

Key Features:

• Spline Size (Inches): 7/8
• Disc Type: Race Disc
• Spline Count: 20
• Product Weight (lbs.): 11.8
• Torque Capacity (ft./lbs.): 385
• Light to moderate pedal effort, aggressive engagement, increased gear rattle
• Moderate friction life, extended by ACT's exclusive diaphragm design, rigid design may increase spline wear
• Carefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance
• Recommended for race use only
• 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability

MB1-SPR4 kit features a Sport pressure plate for a nice upgrade. ACT Sport pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's 4-pad rigid race discs are made with high quality, ceramic friction materials. The chrome-moly hub is heat-treated for strength and durability. The lightweight, rigid design allows for quicker shifts and smooth, trouble-free service. With the 4-pad rigid race disc, engagement is harsher, but shifting is faster. The 4-pad rigid race disc is well-suited for the smaller disc sizes in smaller engines.
Since 1994, Advanced Clutch Technology has specialized in performance clutches and flywheels. All products are made from the highest quality materials and then necessarily tested to ensure they perform to the customers' expectations.

Vehicle Fitment Table

FAQ

Will this fit my vehicle?
Please verify your year, make, model, position, and any fitment notes using the compatibility table above before purchase.

What part number is this?
The listed part number is MB1-SPR4.

Is this product designed for direct replacement?
Yes. This product is intended to match the compatible vehicle applications listed in the fitment table.

Should I confirm fitment before ordering?
Yes. Always compare your original part, position, and vehicle details with the fitment table before ordering.

Common Searches

• Sport/Race Rigid 4 Pad for Chrysler Sebring
• MB1-SPR4 fitment
• ACT Sport/Race Rigid 4 Pad
• 2003–2004 Chrysler Sebring Sport/Race Rigid 4 Pad
• ACT MB1-SPR4 replacement