[Insert action movie trailer voice] When raw power collides with precision engineering, every component must perform without compromise. In all seriousness, a clutch is the one part between your engine and the ground that has to hold everything you throw at it, every shift, every launch. Lethal Performance Clutch Kits are built to do exactly that, from street-friendly 500 hp builds to 1000 hp monsters, using Carbon/Kevlar and ceramic friction materials, sintered-on facings, and torque ratings that mean what they say.
The Lineup at a Glance
- Street Fighter 525: single-disc, Carbon/Kevlar, 525 ft/lbs. The stock-replacement clutch for naturally aspirated and bolt-on Mustangs, 1996 to 2017.
- Street Warrior: single-disc, dual-faced ceramic, 700 hp and 700 ft/lbs, SFI approved. For 2011 to 2017 Mustang GT and 2012 to 2013 Boss 302.
- LPX: twin-disc, Carbon/Kevlar, 800 ft/lbs, with a lightened steel or aluminum flywheel. 1999 to 2026 Mustang.
- LPXHD: twin-disc, Carbon/Kevlar, 1000 ft/lbs, same flywheel options. 1999 to 2026 Mustang.
Here is the whole lineup in one sitting, from mild to wild:
Match the Clutch to the Build
Choosing a clutch is not about buying the biggest number. It is about matching the clutch to what the car makes and how it gets used. A kit engineered for 500 hp will not survive an engine making 800, and a clutch built for the street will not enjoy a season of drag strip launches. Pick the one rated for your power with headroom, built for the way you drive, and every gear change stays smooth and every launch hooks.
The torque ratings below are the number to shop by. Horsepower sells cars; torque is what a clutch actually has to hold.
Street Fighter 525
Tailored for naturally aspirated, bolt-on Mustang builds, the Street Fighter 525 is a single-disc kit engineered for refined street manners and reliable drag strip performance. It is the stock replacement for anyone who wants smooth engagement without giving up durability, and it fits Mustangs from 1996 through 2017 in 10, 23, and 26 spline versions, with or without a slave cylinder or throwout bearing in the box.
- Torque rating: 525 ft/lbs
- Clamp load: 3,200 lbs for consistent, rock-solid engagement
- Friction disc: Carbon/Kevlar composite for smoother engagement and high burst strength at high RPM
- Friction properties: a low coefficient of friction that limits wear on surrounding components, with a sintered-on facing for durability under heat
- Longevity: about 50% longer life than a traditional organic facing
- Application: stock replacement and N/A bolt-on Mustangs, with excellent street manners and drag strip capability
Also available with slave cylinder, and in 26 spline
Also available with slave cylinder, and in 26 spline
Also available with throwout bearing, and in 26 spline
Shop All Street Fighter Kits ›
Street Warrior
Built to command attention, the Street Warrior is engineered for the 2011 to 2017 Mustang GT and the 2012 to 2013 Boss 302. When the engine is making 700 hp and 700 ft/lbs, you need a clutch that holds its ground and still shifts like a street car. The Street Warrior does it with an 11-inch dual-faced ceramic disc and an SFI approval, which makes it the kit for the car that drives to the track, runs all day, and drives home.
- Torque rating: 700 ft/lbs
- Disc diameter: 11 inches, for maximum friction surface area
- Friction technology: dual-faced ceramic discs for aggressive hold and rapid heat dissipation
- Certification: SFI approved for street-to-strip use
- Durability: more robust than a factory clutch, engineered for daily driving and track days alike
SFI approved
LP-854 lightened steel flywheel included
The combo pairs the Street Warrior with our own 19.4 lb, SFI-certified 8-bolt flywheel. The Lethal Performance Lightened Steel Flywheel has its own write-up if you want the full story on why steel over aluminum.
LPX and LPXHD
For the build that has outgrown a single disc, the LPX and LPXHD twin-disc kits are the step up. Twin Carbon/Kevlar discs spread the load across double the friction surface, which is how a clutch holds 800 or 1000 ft/lbs and still engages smoothly enough to drive in traffic. Each kit ships with its own flywheel, either lightened steel or aluminum, and covers Mustangs from 1999 through the 2024-2026 GT and Dark Horse.
- Torque ratings: LPX 800 ft/lbs, LPXHD 1000 ft/lbs
- Friction discs: twin Carbon/Kevlar discs for very smooth engagement and exceptional burst strength at high RPM, with a low coefficient of friction to minimize wear and a sintered-on facing for heat handling
- Endurance: about 50% longer life than an organic facing, and rated for drag strip use with better heat management
- Flywheel: lightened steel or aluminum, included
Also available with aluminum flywheel
Also available with aluminum flywheel
The LPX and LPXHD collection also covers the 2005-2010 GT, the 2007-2009 and 2010-2014 GT500 (sprung hub), the 2003-2004 Cobra with an upgraded shaft, and the 1999-2004 Cobra and Mach 1, in 10 and 26 spline. If your car is not in the cards above, it is in the collection.
What's Inside: Materials and Manufacturing
Advanced materials
Carbon/Kevlar composite. Used in the Street Fighter and both twin-disc kits. It engages smoothly, it has high burst strength at high RPM, and its lower coefficient of friction means less wear on the flywheel and pressure plate it works against. Ceramic. Used in the Street Warrior, where dual-faced ceramic discs hold aggressively and shed heat fast enough to stay consistent lap after lap.
Precision manufacturing
Sintering and surface treatment. The friction material is sintered onto the drive plate rather than glued, which creates a bond that survives thermal cycling and clamping force that would delaminate a bonded facing. Clamping mechanics. Each kit's clamp load is matched to its torque rating, so power transfers without slip and the pedal stays usable.
Performance engineering
Torque ratings that mean something. 525, 700, 800, and 1000 ft/lbs are the numbers each kit was engineered to, not marketing. Thermal management. Heat is what kills clutches, and every kit in the line is built to dissipate it under sustained load so the tenth pass feels like the first.
Frequently Asked Questions
Which Lethal Performance clutch do I need for my power level?
Shop by torque. Street Fighter 525 for naturally aspirated and bolt-on cars under 525 ft/lbs. Street Warrior for 2011-2017 GT and Boss 302 up to 700 ft/lbs. LPX for up to 800 ft/lbs and LPXHD for up to 1000. Leave headroom; a clutch at its limit is a clutch that slips.
Does the LPX or LPXHD fit a 2024-2026 Mustang GT or Dark Horse?
Yes. Both are available for the 2024-2026 GT and Dark Horse with the aluminum flywheel, which is the only flywheel offered for 2018 and newer cars.
Why is the aluminum flywheel the only option on 2018 and newer Mustangs?
It keeps the rotating weight near stock, so the RPM drop between shifts stays small and the car drives the way Ford set it up. The lightened steel flywheel is offered on 2017 and older cars.
Is the Street Warrior SFI approved?
Yes. The Street Warrior carries SFI approval, which some tracks require once the car runs quick enough.
Do the twin-disc kits include a flywheel?
Yes. Every LPX and LPXHD kit ships with its own flywheel, lightened steel or aluminum depending on the application. The Street Fighter and Street Warrior are clutch kits; the Street Warrior is also sold as a combo with the lightened steel flywheel.
What are the installation torque specs for the LPX and LPXHD?
Floater 25 ft/lbs, pressure plate 35 ft/lbs, flywheel-to-crank 65 ft/lbs. Follow the instruction sheet in the box.
Something for Everyone
Every Lethal Performance clutch kit, from the 525 ft/lb Street Fighter to the 1000 ft/lb LPXHD. Not sure which one? Call. We have put a lot of these in.
