The M-Pact ST1.5X Performance Clutch Kit is recommended for performance street, autocross, and track. Each kit features a high-clamp engineered pressure plate and a multi-friction clutch disc. The multi-friction disc is unique because it incorporates two different friction materials working to achieve maximum performance and drivability. A steel back lining is used on the flywheel side for smooth engagement and less flywheel surface wear while a segmented sintered ceramic facing on the pressure plate side delivers maximum holding power.
Features:
- Delivers up to a 100-175% increase in torque capacity and is designed for street, track, and off-road applications
- Uses a high-clamp engineered pressure plate with a high-torque multi-friction clutch disc
- Assembled with precision engineered components designed for increased horse power applications
- Incorporates two different friction materials working simultaneously to achieve maximum performance and drivability
- A steel backed lining is used on the flywheel side for smooth engagement and less flywheel surface wear
- On the pressure plate side, a segmented sintered ceramic facing delivers maximum holding as well as increased grab upon engagement
- 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 |
 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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