SKU: CSB55SST-8.5
Spec 15-19 BMW M2/13-19 BMW M3 S55/M4 SS-Trim Twin Disc Clutch Kit
The SPEC SS-Trim Twin Disc Clutch Kit upgrades power transfer in 2015-2019 BMW M2 and 2013-2019 BMW M3 S55/M4 models. Twin disc setup manages up to 925 ft/lbs daily torque and 1125 ft/lbs peak for tuned engines. Drivers gain consistent shifts and heat resistance during aggressive use.
Key Features
- Twin Disc Design: Transfers higher torque loads with progressive engagement reducing driveline shock compared to single disc systems
- SS-Trim Components: Stainless steel backing plate and hardware withstand repeated heat cycles extending service life
- Performance Friction Discs: Cerametallic materials hold grip from low to redline RPM without slip or chatter
- Sport Flywheel: Reduces mass by 20 percent over OEM for quicker revs and faster throttle response
- Full Bolt-On Kit: Contains pressure plate discs flywheel throwout bearing pilot bearing alignment tool and ARP fasteners
Product Notes
- Designed for modified S55 engines producing over stock 425 ft/lbs
- Follow 500-mile break-in avoiding full throttle launches or slipping
- MPN SB55SST-8.5 fits rear-wheel drive applications only
Installation Notes
- Professional installation recommended.
- Torque pressure plate bolts to SPEC specs using OEM flywheel resurfacing if reusing
- Requires compatible OEM or aftermarket throwout bearing sleeve
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015 – 2019 | BMW | M2 | Competition |
| 2013 – 2019 | BMW | M3 | S55 |
| 2013 – 2019 | BMW | M4 | Base / Competition / CS / GTS |
Why Choose SPEC?
- 20+ years building clutches for BMW S55 platforms
- USA-made with dyno-proven materials and tolerances
- Field tested in racing and high-hp street cars
Frequently Asked Questions
- Q: Does this fit 2017 BMW M3 with Competition Package?
A: Yes covers all 2013-2019 S55 M3 models including Base Competition and CS variants - Q: What friction materials are used?
A: Segment cerametallic facings on primary disc full facing on secondary for balanced grip and wear - Q: What warranty coverage?
A: 12-month limited warranty from purchase date covers manufacturing defects with proper installation
Shipping & Handling
- Method: UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: 18 x 14 x 10 inch reinforced box
- Weight: 28 lbs
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