The factory BMW S55 dual-mass flywheel is engineered with comfort in mind, catering to the luxury-oriented expectations of the brand’s driving experience. Its design focuses on dampening drivetrain vibrations, smoothing out gear transitions, and minimizing harshness during operation. However, this refinement costs valuable performance. The dual-mass flywheel adds a substantial 26.5 lbs of rotational mass to the drivetrain, which significantly hinders throttle response and makes rev-matching feel sluggish and disconnected. Moreover, dual-mass flywheels are notorious for being a weak link in modified or high-performance builds and can prove costly to replace when they inevitably fail.

Our Single-Mass Lightweight Flywheel Conversion addresses all of these shortcomings with a purpose-built, lightweight, single-mass design that prioritizes performance. Weighing in at only 18.5 lbs., this design significantly reduces rotational mass, allowing your S55 to achieve its true motorsport potential!

Features & Benefits:

Precision machined from 4140 HT heat-treated chromoly steel for exceptional toughness, even wear properties, and increased durability.
Material quality promotes even wear across the entire friction surface, prolonging component lifespan.
Heat treated to HRC 28-32, tempered to relieve stress and improve dimensional stability.
Hardness improves component wear characteristics.
Black oxide coated for corrosion resistance on non-friction surfaces.
Precision balanced to exceed OEM specification (G16 spec to 175g-mm).
SFI 1.1 certified to ensure safe operation under extreme operating conditions.
Specifically designed to work with S55 OE-architecture clutches.
Optimized step height maximizes clutch clamp load and offers a prolonged service life.
Performance:

10 lbs. lighter than the factory BMW flywheel!
OEM Dual-Mass: 26.5 lbs.
Turner Motorsport Single-Mass: 18.5 lbs.
Faster revs
Improved throttle response and acceleration
Allows for a more engaging driving experience and delivers a feeling of direct connection
Installation:

Flywheel Hardware: For added peace of mind, apply Blue or Orange Loctite when installing factory flywheel bolts that do not come with pre-applied threadlocker.

BMW E30 M20 Clutch And Flywheel Kit - I/IS from Turner Motorsport offers a premium upgrade for naturally aspirated M20 engines. This comprehensive kit includes a lightweight single-mass flywheel and a Sachs clutch kit, providing a significant performance boost and refreshing the driving experience of early and late-model E30s.

• Lightweight Single-Mass Flywheel: Enhances throttle response and frees up lost horsepower by reducing rotating mass. Provides a perfect balance between lightweight performance and durability.
• Sachs OE Replacement Clutch Kit: Includes clutch disc, pressure plate, throw-out bearing, and pilot bearing, designed for reliable performance and smooth operation.
• Improved Driving Experience: Refreshes the clutch pedal feel and driving dynamics of the M20 engine, ideal for both early and late model E30s.
• Quality and Fitment: Tested and approved by Turner Motorsport for optimal performance and confirmed fitment on various E30 models.
• Additional Components: Recommended transmission seals, fluid, and mounting hardware available separately for a complete service.

BMW E39 M5 South Bend Stage 2 Daily Clutch Kit provides a powerful, durable upgrade for the E39 M5, combining exceptional torque capacity with daily drivability. Turner Motorsport offers this clutch kit, designed to handle high horsepower modifications with ease. Featuring a heavy-duty pressure plate and high metal-content organic disc, this clutch system delivers double the friction of a stock lining and a burst strength up to 12,000 RPM.

Ideal for both daily use and moderate race conditions, this Stage 2 clutch kit is rated to manage up to 440 lbs/ft of torque. The solid-hub center section is optimized for compatibility with the OE dual-mass flywheel, ensuring a smooth, reliable driving experience while maintaining a nearly stock pedal feel.

• Heavy-Duty Pressure Plate: Increased clamp load for superior torque handling with minimal change in pedal pressure
• High Metal-Content Organic Disc: Provides double the friction coefficient and enhances rotational strength, rated up to 12,000 RPM
• Smooth Daily Drivability: Near-stock pedal feel, perfect for street driving and moderate racing
• Solid-Hub Center Design: Seamlessly integrates with the OE dual-mass flywheel for optimal performance
• Torque Capacity: Rated to manage up to 440 lbs/ft, ensuring dependable strength for modified power levels

Recommended for daily, street, and moderate race applications.

From the factory, the E46 M3 featured a dual-mass flywheel and self-adjusting clutch kit. While this provided an easy, comfortable driving experience, it lacks the durability and performance features of an upgraded clutch and flywheel kit. ECS Tuning's all-new S54 performance clutch kit is designed to address these issues. Featuring a full-face clutch disc and heavy-duty pressure plate, this kit offers increased power-holding capability, exceptional pedal feel, and superior durability.

The factory dual-mass flywheel weighs 24.2 lbs. This heavyweight component favors dampened vibrations and smooth gear changes—not performance. The 16.5 lb. E34 M5 flywheel designed by ECS omits the bulky dual-mass design for a single-mass, chromoly steel flywheel. For the performance-minded enthusiast, this translates to quicker RPM changes, easier "heel-toe" downshifts, and improved acceleration.

Engineered in-house with the enthusiast in mind, this is the perfect option for those wanting a lightweight flywheel and performance clutch, without the heavy pedal feel commonly associated with aggressive clutch kits. The ECS S54 performance clutch and lightweight flywheel are designed to accommodate all conditions: from Sunday drives through the country to the abuse of the track. No matter your driving style or ability, this is the flywheel and clutch kit for you.

PART DESIGN

ECS S54 Performance Clutch Kit:

Compatible with any performance flywheel that is designed to accept an E34 M5 architecture clutch Sprung-hub clutch disc Includes ECS performance pressure plate, performance clutch disc, throwout bearing, pilot bearing, alignment tool, and all flywheel and pressure plate hardware ECS Single-Mass Lightweight Flywheel:

Eliminates the factory dual-mass flywheel for: Improved throttle response Improved acceleration Lower replacement cost Hardened 4140 Chromoly Steel for excellent engagement feel and wear resistance Zinc-plated for added corrosion resistance Weighs in at just 16.5 lbs! SFI tested and certified to ensure safe operation under all conditions Why is SFI testing and certification important?

The SFI Foundation, Inc. (SFI) is a non-profit organization established to issue and administer standards for the quality assurance of specialty performance and racing equipment. SFI certification indicates a flywheel has been certified using industry-standard SFI Spec 1.1 standards by an independent testing body to ensure the quality of both design and materials for flywheels utilized in competitive motorsports.

Having successfully passed SFI certification, this flywheel has an individual SFI serial number found in a laser etching, and on an affixed sticker. This certification means the ECS-engineered flywheel is safe and reliable during the rigors of competitive racing; it's also safe and reliable for years and years of street use.

PRODUCT DEVELOPMENT

This Performance Clutch Kit & Lightweight Flywheel was designed, engineered, tested, and quality inspected by the ECS Research and Development team. ECS Tuning strives for the highest level of precision and quality through leading-edge product development technology, including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing an in-house 3D printer, and rigorous long-term product testing.

BMW E46 M3 Stage 2 Daily Clutch Kit is designed to deliver impressive power handling and daily drivability for modified E46 M3s. Turner Motorsport offers this high-performance clutch kit, engineered to withstand increased horsepower and torque while maintaining a near-stock pedal feel. Featuring a heavy-duty pressure plate and high metal-content organic disc, this Stage 2 clutch kit is ideal for street driving, moderate racing, and daily performance needs.

With an enhanced clamp load that doesn’t compromise pedal pressure, this clutch kit is conservatively rated to handle up to 340 lbs/ft of torque. Its solid-hub center design ensures smooth compatibility with the OE dual-mass flywheel, making it a reliable choice for E46 M3 enthusiasts looking to upgrade their clutch system for increased durability and strength.

• Heavy-Duty Pressure Plate: Increased clamp load for enhanced torque capacity with minimal change in pedal pressure
• High Metal-Content Organic Disc: Boosts friction coefficient and rotational strength, rated for up to 12,000 RPM burst point
• Daily Drivability: Maintains a near-stock feel, perfect for street and moderate race applications
• Solid-Hub Center Design: Works seamlessly with the OE dual-mass flywheel for reliable performance
• Torque Handling: Conservatively rated to manage up to 340 lbs/ft of torque for added performance

Recommended for daily, street, and moderate race use.

BMW E46 E39 Stage 2 Daily Clutch Kit delivers a powerful yet smooth upgrade for drivers seeking enhanced performance without sacrificing daily comfort. Turner Motorsport presents this high-quality clutch kit, designed for BMW E46 and E39 models, with a heavy-duty pressure plate to handle high horsepower modifications. The organic disc material, enriched with metal content, provides double the friction coefficient of a standard clutch, ensuring maximum rotational strength up to 12,000 RPM.

This clutch kit is conservatively rated to handle up to 385 lbs/ft of torque, making it suitable for daily, street, and moderate race applications. Its solid-hub center section is perfectly compatible with the OE dual-mass flywheel, delivering a blend of strength, durability, and near-stock pedal feel.

• Heavy-Duty Pressure Plate: Enhanced clamp load for added torque capacity with minimal change in pedal pressure
• High Metal-Content Organic Disc: Increases friction coefficient and rotational strength, rated for up to 12,000 RPM
• Daily Drivability: Provides near-stock pedal feel, ideal for street driving and moderate racing
• Solid-Hub Center Design: Ensures smooth integration with the OE dual-mass flywheel
• Torque Capacity: Conservatively rated for 385 lbs/ft of torque, handling modified power levels with ease

Recommended for daily, street, and moderate race applications.

BMW E36 Z3 Stage 1 Single Sprung Organic Clutch and Flywheel Kit from Turner Motorsport offers a high-performance solution with a lightweight design for improved throttle response and exceptional torque capacity. Ideal for high-performance racing applications, this kit provides the ultimate balance between drivability and power.

• Lightweight Design: Enhances throttle response and overall driving dynamics.
• High Torque Capacity: Supports up to 340 ft/lbs of torque, making it suitable for performance-driven applications.
• Precision Engineering: Features the latest pressure plate design and friction material for optimal balance between drivability and performance.
• Enhanced Pedal Feel: Carefully analyzed pivot point and diaphragm design ensure positive pedal feel and increased clamping force.

Specifications:

• Clutch Disc Diameter: 9.448"
• Clutch Disc Spline: 10
• Disc Material: Organic
• Disc Type: Sprung Solid
• Input Shaft Diameter: 1.140625"
• Flywheel Step: -3.8mm
• Maximum Torque Capacity: 340 ft/lbs
• Recommended Use: Street Use

Includes:

• Single Mass Flywheel
• 1 Sprung Organic Clutch Disc
• Pressure Plate
• Flywheel Bolts
• Pressure Plate Bolts
• Release Bearing
• Alignment Tool
• Clutch Spline Grease

XClutch performance upgrades are developed with over 30 years of experience and advanced testing facilities, offering top-notch engineering for both street and race applications.

MINI R56 Stage 2 Endurance Clutch Kit is engineered for high-performance driving and racing environments. Designed to withstand the rigors of rally and endurance racing, this clutch kit delivers enhanced durability and performance while maintaining smooth operation.

• Precision Engineering: The pressure plate is precision-balanced to eliminate vibrations at high RPMs, ensuring stable performance.
• Improved Disengagement: Features an altered fulcrum for positive disengagement and quicker shifts.
• Dual Damped Disc: The disc’s Dual Damped design provides precise control during acceleration, particularly through corners.
• Hybrid Friction Material: Utilizes a Feramic (Sintered Iron) lining on the flywheel side and a high metal content Organic lining on the pressure plate side for positive engagement with a buffered feel.
• Compatibility: Designed to work with the stock dual mass flywheel. It is recommended to pair it with a new stock dual mass flywheel.
• Versatile Performance: Ideal for daily driving, street use, and excels in rally and endurance racing scenarios.

This Stage 2 Endurance Clutch Kit combines robust performance with reliable operation, making it a great choice for MINI enthusiasts who demand high performance under demanding conditions.

Ensure your clutch system can get the all of the power to the wheels. Stock clutch components lack the ability to transmit the full torque and horsepower loads to the wheels without suffering from increased wear and eventual clutch fade. Sachs Performance Clutch Kits are designed for sport and race applications, delivering higher torque transmission without succumbing to wear and tear and fading over extended periods of abuse.

Sachs Performance Clutch Kits include the following upgraded components:

• Performance Pressure Plate - Increased clamping force and resistant to wear

• Performance Clutch Disc - Allows for higher clamping force, higher torque transmission, and better clutch engagement at higher RPM’s

• Performance Throwout Bearing - Designed for increased spring pressure and higher RPM function

These kits are available with two different clutch discs, Organic and Metallic. Organic clutch discs are perfect for both performance street and light-moderate track applications. Metallic are designed for specifically for full-time track use such as endurance racing, clubsport, autocross, hill climbing and 1/4 mile racing. Please be sure you are purchasing the kit that best fits your needs. Our sales staff can help with any questions or concerns you may have!

Sachs Performance is the racing and performance oriented selection of high quality parts from Sachs and ZF Engineering. Supplying countless brands with OE parts and offering one of the widest selection of OEM replacement parts, they are known for their exceptionally high quality products. You can purchase these performance parts with confidence, knowing they will resist heavy wear and tear for much longer than most other aftermarket options.

MINI R Chassis OS Giken Clutch Kit - STR Series enhances performance and durability for your BMW or MINI. This high-performance clutch kit from OS Giken is designed specifically for MINI R chassis models, offering improved torque capacity and durability. With its STR series design, it ensures smooth engagement and precise control, perfect for both street and track applications. Engineered with high-quality materials, this clutch kit provides reliable performance under demanding conditions.

• Enhances performance and durability
• Designed specifically for MINI R chassis models
• Improved torque capacity for enhanced power transfer
• STR series design ensures smooth engagement
• Suitable for both street and track use

Upgrade your BMW or MINI R chassis with the MINI R Chassis OS Giken Clutch Kit - STR Series for superior clutch performance and reliability.