Performance Kit with Hi-Torque Steelback Disc; 9-7/16" x 1" x 14T; Includes Concentric Slave Cylinder
The M-Pact ST1X Performance Clutch Kit is designed for street, track and off-road applications. Each kit features a high-clamp engineered pressure plate with a high-torque heavy duty steel backed friction disc and is assembled with precision engineered components designed for increased horse power applications. Excellent performance for the street enthusiast!
Features:
Delivers up to a 100-150% increase in torque capacity and is designed for street, track, and off-road applications
Advanced steel back friction linings provide additional clamping force and superior burst strength
Reinforced steel backing allows for better heat dissipation delivering extended wear and quick recovery
Assembled with a HD retainer stamping and increased hardness hub to ensure maximum strength and reliability
Six inner and six outer heavy duty torsional dampening springs work with this assembly to minimize the shock of engagement
Made with nodular iron casting for additional performance and strength
Most M-Pact high-clamp pressure plates are assembled with an additional drive strap to increase strength and prevent breakage
M-Pact Clutch Kit Comparison
Kit Level
Designed For
Friction Disc Type
Torque Capacity Increase
Clutch Pedal Feel
OE Replacement
Daily Driving / Stock Vehicles
Organic
None
OE Pedal Feel / Clamp Load
Upgrade Kit with Hi-Torque Steelback Disc
Stock Vehicles or Vehicles With Mild Power Increases
Alloy Backed Organic
Mild
OE Pedal Feel / Clamp Load
Upgrade Kit with Hi-Torque Multi Friction Disc
Moderately Modified Vehicles or Aggressive Drivers With Stock Power
Steel Backed Sintered Ceramic
20-40%
OE Pedal Feel / Clamp Load
Upgrade Kit with Hi-Torque 6 Puck Ceramic Disc
Moderately Modified Vehicles or Aggressive Drivers With Stock Power
6 Puck Cera-Metallic
25-50%
OE Pedal Feel / Clamp Load
Performance Kit with Hi-Torque Steelback Disc
Street, Track & Off-Road Applications
Dual Sprung Alloy Backed Organic
100-150%
Stiff Pedal Feel / High Clamp Load
Performance Kit with Hi-Torque Multi Friction Disc
Street, Track & Off-Road Applications
Dual Sprung Steel Backed Sintered Ceramic
100-175%
Stiff Pedal Feel / High Clamp Load
Performance Kit with Hi-Torque 6 Puck Ceramic Disc
Performance Street, Track & Road Racing
Dual Sprung 6 Puck Cera-Metallic
150-200%
Stiff Pedal Feel / High Clamp Load
Why Self-Adjusting Clutches Are A Better Value:
Overtime, the material on the friction disc wears, causing the pressure plate to move closer to the flywheel. Eventually without adjustment, there will be permanent contact to the clutch, causing the clutch to fail.
Non-self Adjusting Clutches must be routinely adjusted manually to the proper height to keep space between the flywheel & pressure plate when the pedal is pressed. Self-Adjusting Clutches automatically adjust as the friction material wears, keeping the proper spacing and pressure through out the life of the clutch and eliminating excessive load on the release bearing.
While Self-Adjusting Clutches are typically more expensive up front, they can save you money over the life of your clutch.
Organic vs. Kevlar vs. Ceramic Friction Disc - What Is The Difference?
The Friction Disc is a vital part of any clutch. It connects the pressure plate and flywheel, and is responsible for transferring engine power to the rest of the vehicle. Clutch Kits come with several different types of friction discs, and it is important to understand the pros and cons of each material:
Clutch Disc Material
Smooth Engagement
Holding Power (Friction "Grab")
High Torque Capacity
Lifespan
Gentle To Flywheel
Organic
★★★
★
★
★★
★★★
Kevlar
★★★
★★
★★
★★★
★★★
Ceramic / Cerametallic
★
★★★
★★★
★
★
Tips & Tools For The Job
Wear a Dust Mask to protect against hazardous clutch dust. You can also spray the clutch with water prior to removal to reduce the amount of airborne dust during disassembly.
Use a Flywheel Turner to hold the flywheel in place while removing and reinstalling the pressure plate bolts.
Apply Blue Threadlocker to flywheel bolts prior to installation to prevent backing out due to the high vibrations flywheels are subject to.
Use the provided lubricant to lightly lubricate the splines of the input shaft. Over lubricating the input shaft risks lubricant transfer to the clutch friction disc and can cause clutch slippage.
Be sure to install the new clutch friction disc in the correct direction. The disc will have a "Flywheel Side" label on one side.