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ACT Mod-Twin 10.5 HD Rigid Street: T1S-F12. Excellence in Performance, backed by the best one-year warranty in the industry!
T1S-F12 Mod-Twin 10.5 HD Rigid Street Kit blends easy pedal feel, smooth but positive engagement with quick shifting for high-powered street machines by combining twice the organic friction surfaces with a no-nonsense solid Mono-Drive hub in a completely modular design. Each diaphragm spring endures an exclusive four-stage heat treating process to provide a light and consistent pedal feel. Steel-backed Friction Plates with high quality performance organic friction materials deliver stable friction coefficient, improved heat capacity and long clutch life. These Friction Plates uniformly transfer torque to a Mono-Drive Chromoly hub, which is heat treated for strength and durability, extending input shaft life with one continuous spline. The lightweight, rigid design allows for quicker shifts and trouble-free service. This kit includes a CNC-machined and dynamically balanced flywheel, pressure plate cover, diaphragm spring, face, puck-style ceramic friction plates, rigid Mono-Drive hub, floater, alignment tool and pilot bearing (where applicable). Mod-Twin clutches are fully rebuildable, and replacement discs may be ordered separately.
ACT (Advanced Clutch Technology) is a trusted leader in high-performance clutch and drivetrain solutions, engineered for enthusiasts, racers, and high-torque performance builds. At Black Ops Auto Works, our ACT collection features a wide range of ACT performance clutch kits, pressure plates, clutch discs, flywheels, pilot bearings, and alignment tools designed to handle aggressive driving, increased horsepower, and track-level abuse. Manufactured in the USA and proven in motorsports worldwide, ACT products deliver consistent clutch engagement, superior heat resistance, and long-term reliability. Whether you’re upgrading a street-driven vehicle or building a race-ready setup, ACT clutches provide the strength and precision needed to put power to the ground. Our ACT lineup supports many popular import and domestic platforms, including Subaru, Mitsubishi, Scion FR-S / Subaru BRZ, BMW, Ford, Audi, Volkswagen, Jeep, and Hyundai. From HD Performance Street clutches to XT and race-sprung c...
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A performance clutch system is one of the most impactful drivetrain upgrades available for any manual transmission vehicle. From street-friendly organic disc kits to heavy-duty ceramic setups built for drag racing and track use, matching the right clutch components to your power level and driving style keeps engagement consistent and power transfer reliable.Popular UpgradesStage 1 and Stage 2 clutch kits with upgraded pressure plates and organic or hybrid friction discs are the most popular choice for street builds making 300 to 500 horsepower. Stage 3 and Stage 4 ceramic or Kevlar disc setups handle the demands of forced induction or high-compression builds. Lightweight aluminum flywheels paired with upgraded clutch kits improve rev response and make gear changes faster on both street and track applications.What clutch stage do I need for my build?Stage 1 clutches are rated for lightly modified street engines up to about 350 horsepower. Stage 2 kits cover 350 to 500 horsepower with...
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Multi-disc clutch kits bundle the friction disc, pressure plate, and release bearing together in a single purchase, ensuring all worn components are replaced at the same time for consistent performance after install. These kits are available in organic, ceramic, and hybrid friction materials to match a wide range of power levels and driving styles.Popular UpgradesStage 2 and Stage 3 multi-disc clutch kits for LS, LT, small-block Ford, and Mopar applications are the most frequently purchased options for modified street vehicles. Kits that include a lightweight aluminum flywheel alongside the disc, pressure plate, and bearing are ideal for builds where improved rev response is a priority. OEM-spec replacement kits for high-mileage vehicles restore factory engagement feel without requiring individual component sourcing.What is included in a multi-disc clutch kit?A standard multi-disc clutch kit includes one or more friction discs, a matched pressure plate, and a release bearing. Some p...
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Shop drivetrain parts and accessories at Black Ops Auto Works for differentials, axles, driveshafts, clutch kits, flywheels, flexplates, shifters, transmission components, ring and pinion gears, differential braces, differential bushings, wheel hubs, wheel bearings, U-joints, valve bodies, transmission coolers, drivetrain mounts, and performance driveline upgrades. This collection is built for street cars, drag cars, track builds, trucks, Jeeps, SUVs, high-horsepower Mopar builds, imports, European performance vehicles, and off-road applications that need stronger power delivery, durability, and reliability. Use this Drivetrain collection to find the right upgrade by vehicle platform, drivetrain layout, transmission type, power level, and product category. Differentials and ring and pinion gears support traction and gearing changes, axles and driveshafts help transfer power, clutch kits and flywheels improve manual transmission performance, transmission coolers and valve bodies supp...
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Shop Ford Mustang parts and accessories at Black Ops Auto Works for premium aftermarket performance parts, suspension upgrades, brake kits, exhaust systems, cold air intakes, carbon fiber body parts, lighting upgrades, fuel system components, and styling accessories. Whether you drive a classic Ford Mustang, SN95, New Edge, S197, S550, S650, Mustang EcoBoost, Mustang GT, Mach 1, Shelby GT350, Shelby GT500, or Dark Horse, this collection is built for enthusiasts who want better power, handling, braking, airflow, drivability, and aggressive styling. From daily-driven street cars to drag builds, track cars, and show cars, our selection of Ford Mustang aftermarket parts is curated for fitment, quality, and performance. Shop Ford Mustang Performance Parts by Category Browse Mustang performance parts across popular upgrade categories, including: Ford Mustang cold air intakes and intake parts Ford Mustang brake pads, brake rotors, and brake kits Ford Mustang exhaust systems, cat-back exha...
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