The factory BMW S65 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 27 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 19 lbs., this design significantly reduces rotational mass, allowing your S65 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).
Specifically designed to work with S65 OE-architecture clutches.
Optimized step height maximizes clutch clamp load and offers a prolonged service life.
Performance:

8 lbs. lighter than the factory BMW flywheel!
OEM Dual-Mass: 27 lbs.
Turner Motorsport Single-Mass: 19 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.

Turner Motorsport Lightweight N54 Flywheel & Upgraded Clutch Kit

Unlock the full potential of your N54-powered BMW with our performance-driven clutch and flywheel kit. Designed to enhance daily drivability while delivering increased power handling and improved throttle response, this kit is the ultimate upgrade for enthusiasts seeking more from their vehicle.

Why Choose This Kit?
This setup features the Turner Lightweight N54 Flywheel, precision-engineered for quicker acceleration, faster rev-matching, and a more responsive driving experience. Paired with an upgraded OE clutch from the high-performance 335is and F10 550i(V8 Bi-Turbo), this combo is capable of handling over 500 ft-lbs of torque while maintaining smooth, factory-like engagement and durability.

The factory dual-mass flywheel may prioritize smoothness and efficiency, but it comes at the cost of responsiveness and is prone to failure in high-performance applications. The Turner Lightweight Flywheel solves these issues with a single-mass design that strikes the perfect balance between comfort, performance, and reliability making it ideal for both daily driving and spirited track use.

Kit Contents:

Turner Lightweight N54 Single-Mass Flywheel (18.6 lbs, 10 lbs lighter than stock)
Upgraded OE Clutch – Supports 500 ft-lbs+
OE Clutch Fork - P# 21517564027
OE Throwout Bearing
Clutch Alignment Tool - P# 056212LA01A
Brass Clutch Fork Pivot Pin - P# 21511223328
OE Flywheel Bolts - P# 11227520706
OE Pressure Plate Screws - P# 21207548052
Pivot Pin Retaining Spring - P# 21517570284
Transmission Mating Dowels - P# 11117524470
Flywheel Features:

Precision-machined 4140 HT heat-treated chromoly steel for durability
Black oxide coating to resist corrosion
8620 steel pilot bearing pin for maximum wear resistance
Precision balanced to exceed OEM standards
Optimized step height for longer clutch life and consistent performance
Clutch:

Upgrade for 135i/335i/535i models from the 335is! Featuring a heavy-duty clutch with more holding power and a stock-like pedal feel. Excellent solution for If your clutch is slipping, or the engagement isn't what it used to be, it's time for a replacement. Slipping clutches won't allow your BMW to accelerate properly and can pose problems under a load such as going up large inclines. Also, a worn clutch can cause less precise and engaging shifts. By replacing your clutch you will restore performance and driving pleasure.

This clutch is an excellent upgrade for non 335is/550i/650i models. It features a more heavy-duty clutch disc and more holding power with stock-like pedal effort.

Transform your driving experience with this Turner Motorsport clutch and flywheel kit - engineered for power, performance, and everyday reliability.

Working in collaboration with Competition Clutch, the up and coming German automotive performance company DKM has released a new line of high quality clutches made to satisfy your stock and modified performance needs! If you're having problems keeping power to the wheels, DKM has the solution. Their design, using high-grade materials, gives you increased strength and heat tolerance preventing wear and fade, ensuring increased torque capacity, quicker shifts, and longer clutch life.

Tracking your vehicle is all fun and games until you start burning through clutches as fast as you can afford to replace them. To end this cycle, the MS Twin Disc Clutch Kit is designed to hold up to 100 to 200% more torque capacity and provide you with a much-improved clutch life span. The two organic disc setup provides additional contact surface areas to more evenly distribute pressure and heat for both a boost in performance and wear prevention.

Kit Contents:
Pressure Plate
Two Organic Discs
Steel Single Mass Flywheel
Pilot Bearing/Bushing and Throw-out Bearing (when applicable)
Alignment Tool

Enhance Your Car's Performance with the Perfect Clutch-Flywheel Combination

When it's time to replace your car's clutch, you face a crucial decision: upgrade or stick with stock? In many cases, upgrading is the preferred choice, especially when you pair the right clutch with a single mass flywheel. The secret to achieving the perfect blend of performance and driving experience lies in selecting a sprung hub clutch. This option allows you to enjoy the advantages of a single mass flywheel while eliminating issues like noise, vibration, and harshness (NVH), ensuring an outstanding driving performance.

Upgrade Your BMW with Spec Twin Disc PT-Trim Semi-Metallic Puck Clutch Kit SB53PT-3

Upgrade your BMW 135i / 335i with the Spec Twin Disc PT-Trim Semi-Metallic Puck Clutch Kit SB53PT-3, ideal for models from February 2009 to 2012. This Super Twin Disc Clutch Kit (SB53PT-3) by SPEC® boasts a PT-Trim design and includes a flywheel. Engineered for street and track use, it's suitable for high-horsepower and high-torque vehicles, offering near-stock drivability and long life expectancy. The bolt-in installation requires no shimming/setup and ensures maintenance-free operation. Constructed with aircraft-grade aluminum and high-carbon billet steel, this clutch kit guarantees perfect balance and actuation. Friction is provided by dampened, full-faced carbon graphite discs. Featuring organic, fiber, and full metallic options, it caters to various driving needs. Each kit includes a flywheel and track-spec hardware. SPEC® products are renowned for their quality and durability, providing years of trouble-free service. This clutch kit is designed to enhance your vehicle's performance and reliability.

• Engineered to enhance vehicle performance
• Made to stringent quality standards
• Exceptional durability for long service life
• Includes flywheel

SPEC's Stage 2 clutch features a full faced pure Kevlar disc complete with steel backing. This lining offers outstanding drivability like the Stage 1 kit, with an increased torque capacity and a longer life. The hub is double sprung with built-in spring reliefs for flexibility, along with heat treatment for added strength and durability. This clutch is best served in any situation from daily driven on the street, to drag or autocross racing events.

Kit includes:

Pressure plate
Clutch disc
Pilot bearing
Clutch Release Bearing
Clutch Alignment Tool
Clutch fork
Designed to be used with billet single mass flywheel

Upgrade the holding power of your clutch with the Clutch Masters FX250 clutch kit.

FX250 (Stage II)

• Extra long life street system
• Holding capacity 70% over stock
• Heavy-Duty reinforced pressure plate
• Rigid organic/fiber tough disc

All Clutch Masters clutch kits come complete with:

• Pressure Plate
• Clutch Disc
• Throw-out Bearing
• Pilot Bearing or Bushing
• Alignment Tool
• Pressure Plate Bolts

This clutch kit does not include a flywheel. 

Advanced Clutch Technology (ACT) designs, engineers and develops products by leveraging decades of track and performance street experience. Advanced CAD, FEA simulation, and CAM tools help ensure highly optimized performance, reliability, and repeatability. These key advantages are produced by combining the best engineering and design methodologies with the latest in materials and manufacturing techniques.

ACT clutch kits stand unequaled in terms of consistent pedal feel, high torque capacity, long wear life and durability. In-house manufacturing is critical in tuning components specifically to each individual application while maintaining the predictable ACT pedal feel across the entire catalog.

This clutch kit features an Xtreme pressure plate, a Performance Street sprung clutch disc, and an XACT Streetlite Flywheel.

Their Xtreme pressure plate offers a 50-120% clamp load increase, moderate to heavy pedal feel, and is recommended for high performance street and racing applications. All diaphragms went through a four stage heating process for increased strength and unparalleled performance.

Next in this kit is the Performance Street clutch disc. This is the most popular sprung clutch disc and features high quality organic friction material with a high copper content for improved heat transfer and a steel backed lining for increased strength in burst load circumstances. This organic clutch disc has a significantly higher torque capacity than a stock disc but still retains a long life span and operates quietly and reliably.

Clutch Kit Specs:

• Torque Rating: 520 ft/lbs
• 68% torque capacity increase over stock!
• Type of Disc: Street
• 26-count spline
• Spline Size: 1-3/8" inch
• Disc Weight: 3.5 lbs
• Pressure Plate Weight: 10.7 lbs
• 1 year Warranty from retail purchase date!

Upgrade the holding power of your clutch with the Clutch Masters FX250 clutch kit.

FX250 (Stage II)

• Extra long life street system
• Holding capacity 70% over stock
• Heavy-Duty reinforced pressure plate
• Sprung organic/fiber tough disc

All Clutch Masters clutch kits come complete with:

• Pressure Plate
• Clutch Disc
• Throw-out Bearing
• Pilot Bearing or Bushing
• Alignment Tool
• Pressure Plate Bolts

This clutch kit does not include a flywheel. Requires use of single mass flywheel 

Working in collaboration with Competition Clutch, the up and coming German automotive performance company DKM has released a new line of high quality clutches made to satisfy your stock and modified performance needs! If you're having problems keeping power to the wheels, DKM has the solution. Their design, using high-grade materials, gives you increased strength and heat tolerance preventing wear and fade, ensuring increased torque capacity, quicker shifts, and a longer clutch life.

Tracking your vehicle is all fun and games until your start burning through clutches as fast as you can afford to replace them. To end this cycle, the MS Twin Disc Clutch Kit is designed to hold up to 100 to 200% more torque capacity and provide you with a much improved clutch life span. The two organic disc setup provides additional contact surface areas to more evenly distribute pressure and heat for both a boost in performance and wear prevention.

Kit Contents:
Pressure Plate
Two Organic Discs
Steel Single Mass Flywheel
Pilot Bearing/Bushing and Throw-out Bearing (when applicable)
Alignment Tool
Rated for upwards of 660 ft/lbs of torque

This kit from Valeo is a simple way to easily convert your stock dual mass flywheel clutch system to a single mass system.

Dual mass flywheels allow for fluid-feeling clutch engagements and offer a more luxurious feel than single-mass flywheels. However, with these benefits come significant drawbacks. Why convert from a dual-mass flywheel to a single-mass flywheel?

Cost: Dual-mass flywheels are expensive, with the cost of replacement often times being double or triple than that of converting to a single-mass flywheel.
Serviceability: Single-mass flywheels can be resurfaced, eliminating the need to replace with the next clutch service. - something that is not recommended with dual-mass flywheels, as they contain a rubber section that is more failure-prone in high mileage application.
Simplicity: Single-mass flywheels lack the complexity of dual-mass flywheels, making them inherently more reliable. Dual-mass flywheels contain a rubber damper or hub that will, like all rubber components, wear out with time.
Pedal Feel: Many enthusiasts prefer to eliminate BMW's "Self Adjusting Clutch", which has been known to provide an unpredictable, inconsistent engagement point.
Driveability: Valeo's conversion kit has been designed to maintain nearly identical clutch and flywheel weight, ideal for keeping the clutch quiet and easy to drive.
Kit contents:

Single-mass flywheel
Non-Self Adjusting Clutch and pressure plate
Throw out bearing
Pressure plate bolts
Flywheel bolts
Clutch alignment tool

Advanced Clutch Technology (ACT) designs, engineers and develops products by leveraging decades of track and performance street experience. Advanced CAD, FEA simulation, and CAM tools help ensure highly optimized performance, reliability, and repeatability. These key advantages are produced by combining the best engineering and design methodologies with the latest in materials and manufacturing techniques.

ACT clutch kits stand unequaled in terms of consistent pedal feel, high torque capacity, long wear life and durability. In-house manufacturing is critical in tuning components specifically to each individual application while maintaining the predictable ACT pedal feel across the entire catalog.

This clutch kit features an Xtreme pressure plate and an R6 racing clutch disc.

Their Xtreme pressure plate offers a 50-120% clamp load increase, moderate to heavy pedal feel, and is recommended for high performance street and racing applications. All diaphragms went through a four stage heating process for increased strength and unparalleled performance.

Next in this kit is the R6 racing clutch disc. This disc is an unsprung, rigid disc with 6 pads that is best suited for drag and road racing and handles heat better thanks to its increased surface contact area versus the 4 pad version of this disc, the R4. The R6 pads are composed of ceramic friction materials and the disc has a chome-moly hub that is heat treated for additional strength under high load engagements. Over stock, this disc is much better for faster shifting and significantly higher torque loads. Unlike the stock disc, this racing disk has a slightly shortened life span due to its rigid design and pad composition. This in turn is offset thanks to its fast, aggressive engagement for track use.

Clutch Kit Specs:

• Torque Rating: 665 ft/lbs
• 117% torque capacity increase over stock!
• Type of Disc: Racing
• 26-count spline
• Spline Size: 1-3/8" inch
• Disc Weight: 4 lbs
• Pressure Plate Weight: 10.7 lbs
• 1 year Warranty from retail purchase date!

Upgrade the clutch performance of your BMW E9X M3 equipped with the S65 4.0L engine using the SPEC Carbon Graphite Clutch. Engineered specifically for this setup, this high-performance clutch delivers outstanding durability and exceptional power handling capabilities, catering to enthusiasts seeking superior clutch performance.

Crafted from premium materials, the SPEC Carbon Graphite Clutch guarantees reliable power transfer, improved grip, and reduced wear. Elevate your driving experience with this precision-engineered clutch upgrade.

Upgrade your BMW's performance with this stage 3+ clutch kit, boasting a carbon semi-metallic full-faced material for unmatched life, friction coefficient, and drivability. The double-sprung hub enhances flexibility with spring cover relieves, while heat-treated components in both hubs ensure strength and durability. Ideal for various driving scenarios, including street, drag, drift, autocross, road racing, pulling, rallye, and more.

• Carbon semi-metallic material for extended life and optimal friction
• Double-sprung hub with spring cover relieves for enhanced flexibility
• Heat-treated components in both hubs for increased strength and durability
• Suitable for street, drag, drift, autocross, road racing, pulling, rallye, and more

This clutch package is designed for high HP vehicles desiring a start performance similar to O.E. The pressure plate is Race Engineered (SS) and SFI approved with significant load increase over stage 1,2 pressure plates (+600-800 lbs.). Expect a pedal effort increase of 20%-25%. Discs are assembled with heat-treated wear resistant hubs; drive plates and springs for high load transfer and dependable operation. The sprung centers on the disc in conjunction with the marcel fin between the linings create a dual dampening effect that simulates O.E. start performance. A Performance Organic friction material with a high metal content increases torque and RPM capability and maintains low operating temperatures which reduces wear and glazing.

Stage 3 Daily Clutch Kits:

Recommended usages are daily, spirited street and occasional track
Conservatively rated to hold 500lbs/ft of torque
Featuring a solid-hub center section for use with an OE dual-mass flywheel

Performance clutch installation kit includes everything you need for a stage one clutch upgrade. Dampened Disc version. 

• FX100 (Stage I)

• High performance street system

• Holding capacity 70% over stock

• Heavy-Duty reinforced pressure plate

• Hi-Leverage™ pressure ring design

• Sprung hub/cushioned disc

• Steel-backed organic friction material

This clutch kit does not include a flywheel. Requires use of single mass flywheel