The M-Pact ST2X Performance Clutch Kit is recommended for performance street, track, and road racing. Each kit features a high-clamp engineered pressure plate with a dual sprung 6 Puck Cera-Metallic clutch disc. This kit will satisfy the extreme street enthusiast or weekend racer!
Features:
- Delivers up to a 150-200% increase in torque capacity and is recommended for performance street, track, and road racing
- Uses a high-clamp engineered pressure plate with a high-torque heavy duty 6 pad Ceramic clutch disc
- Assembled with precision engineered components designed for increased horse power applications
- USA made Ceramic friction pucks deliver a high coefficient of friction and additional grab ensuring a quick engagement
- Uses a partial closed spring window that provides additional spring support and durability
- Each disc uses a reinforced retainer stamping and increased hardness hub to ensure maximum strength and reliability
- The sprung assembly construction helps to dampen torsion vibrations for smooth engagement and operation
- The high-clamp pressure plate is 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 |
 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.
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