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M-PACT 04137ST1
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$140.79
Price
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$0.00
Core
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+ Sold in packs of 1x1
Pack
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$140.79
Total
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| M-PACT 04137ST1 Specifications |
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| Clutch Disc Diameter | 8-1/2" | | Input Shaft Diameter | 7/8" | | Clutch Disc Spline Count | 20 |
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| Upgrade Kit with Hi-Torque Steelback Disc; 8-1/2" X 7/8" X 20T |
The M-Pact ST1 Upgrade Clutch Kit features a high torque steelback disc and is designed for stock applications or those with mild power increases. By riveting “steel to steel” this advanced steelback friction material provides additional clamping force and superior burst strength. This is an excellent clutch upgrade for street driveability.
Features:
- High-torque heavy-duty steel backed friction disc provides additional clamping force and superior burst strength
- Reinforced steel backing allows for better heat dissipation, delivering extended wear and quick recovery
- Assembled with precision engineered components designed for increased horse power applications
- 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
M-Pact Clutch Kit Comparison
| Kit Level |
Designed For |
Friction Disc Type |
Torque Capacity Increase |
Clutch Pedal Feel |
OE Replacement
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Daily Driving / Stock Vehicles |
Organic |
None |
OE Pedal Feel / Clamp Load |
Upgrade Kit
with Hi-Torque Steelback Disc
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Stock Vehicles or Vehicles With Mild Power Increases |
Alloy Backed Organic |
10-20% |
OE Pedal Feel / Clamp Load |
Upgrade Kit
with Hi-Torque Multi Friction Disc
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Moderately Modified Vehicles or Aggressive Drivers With Stock Power Looking To Retain Smooth Engagements |
Steel Backed Sintered Ceramic |
20-40% |
OE Pedal Feel / Clamp Load |
Upgrade Kit
with Hi-Torque 6 Puck Ceramic Disc
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Moderately Modified Vehicles or Aggressive Drivers With Stock Power Seeking Increased Heat Tolerance |
6 Puck Cera-Metallic |
25-50% |
OE Pedal Feel / Clamp Load |
Performance Kit
with Hi-Torque Steelback Disc
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Performance Street, Light 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
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Performance 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
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Racing & Track Use |
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
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★★★ |
★ |
★ |
★★ |
★★★ |
Kevlar
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★★★ |
★★ |
★★ |
★★★ |
★★★ |
Ceramic / Cerametallic
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★ |
★★★ |
★★★ |
★ |
★ |
 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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Warranty Information:12 Months / 12,000 Miles |
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