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.

Requires shorter flywheel bolts - 8x (P# 11227805885) - T#12322

Lightweight flywheels have proven themselves to be a worthwhile performance enhancement. But with the quicker throttle response and horsepower improvement comes one serious drawback: flywheel chatter. Without the dual-mass flywheel's rubber isolators, a lightweight aluminum flywheel has more rattle than stock. ECS has designed this flywheel using chrom-moly steel and it weighs almost ten pounds less than the stock DMF but not as extreme as full aluminum flywheels. The steel helps dampen vibration and noise so you get near-factory refinement and most of the benefits of a lightweight flywheel: quicker throttle response, better reliability, and more power to the wheels. This flywheel requires the E34 M5 sprung hub clutch kit.

Modern flywheels are built with additional components that are designed to dampen and minimize vibrations from the engine and transmission. Weight has increased and reliability has decreased. With additional weight more energy is required for it to move. A lightweight flywheel does away with the dual mass design and its additional mass so more energy can be diverted to where it counts most - moving the car. The flywheel and clutch is one of the first areas that engine builders address when making the rotating assembly lighter for race engines. The dampening effect is just not needed on cars that are focused on performance. And with a single-mass flywheel the unreliable DMF design is eliminated.

Stock flywheel weight - 25.0lbs
ECS flywheel weight = 16.55lbs

This item fits the following BMWs:
1992-1999 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2002 E46 BMW 323i 323ci 325i 325ci 328i 328ci 330i 330ci (5-speed)
1997-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe
2003-2005 E85 BMW Z4 2.5i Z4 3.0i (5-speed)

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 

Fitment in following BMWs:This item fits the following BMWs: 
2003-2005 E46 BMW 330i 330ci  only for 6-speed manual transmission  *Door Buster Special - New Product*

Elevate your BMW's performance with the Performance Clutch Installation Kit, comprising a clutch pressure plate and friction disc stage one clutch upgrade. Designed specifically for use with FW-635-AL or FW-635-SF, this FX100 (Stage I) kit is engineered to deliver a high-performance street system, boasting a remarkable 70% increase in holding capacity compared to the stock setup. The kit features a heavy-duty reinforced pressure plate ensuring enhanced performance, coupled with the innovative Hi-Leverage™ pressure ring design for superior functionality. The inclusion of a sprung hub/cushioned disc and steel-backed organic friction material guarantees durability and exceptional performance.

Benefits:

• 70% increased holding capacity over stock
• Heavy-duty reinforced pressure plate for enhanced performance
• Hi-Leverage™ pressure ring design for superior functionality
• Durable steel-backed organic friction material

Upgrade your Mini's clutch system with the Performance Clutch Installation Kit, ideal for stage one clutch upgrades. This kit includes everything you need for installation, featuring the FX400 (Stage 2) clutch. Benefits include:

• Suitable for stage one clutch upgrades.
• High-performance street system for improved performance.
• Increased holding capacity, 70% over stock.
• Heavy-duty reinforced pressure plate for durability.
• Hi-Leverage™ pressure ring design for enhanced performance.
• Sprung hub/cushioned disc for smoother engagement.
• Steel-backed Ceramic Lined Sprung Disc friction material for reliability.
• Requires new single mass flywheel FW801AL or FW801SF (not included).

This comprehensive performance clutch installation kit is your ticket to an exciting stage one clutch upgrade. It's equipped with an aluminum flywheel, providing all the essential components for enhancing your car's performance.

The FX300 (Stage 3) clutch system is designed for high-performance street driving. With a holding capacity that's 70% greater than stock clutches, thanks to the heavy-duty reinforced pressure plate, it's perfect for enthusiasts seeking a performance boost. Clutch Masters' unique Hi-Leverage™ pressure ring design ensures top-tier performance and durability.

The sprung hub/cushioned disc and steel-backed Segmented Kevlar disc contribute to its robustness, making it suitable for demanding driving conditions.

With every Clutch Masters clutch kit, you receive vital components, including the pressure plate, clutch disc, throw-out bearing (when applicable), pilot bearing or bushing (when applicable), and an alignment tool.

Upgrade your vehicle's clutch system and experience a new level of performance with the FX300 Stage 3 Clutch Installation Kit.

Restore your BMW MINI's performance with the complete Clutch Kit from MINI. If you're experiencing clutch slipping despite a seemingly intact slave cylinder and pedal, it's time to replace your clutch for seamless functionality.

Key Benefits:

• Complete Clutch Replacement: Includes clutch disc, pressure plate, and release bearing for a comprehensive clutch solution.
• Enhanced Performance: Restores proper clutch engagement and functionality, ensuring optimal performance for your MINI.
• Improved Driveability: Eliminates clutch slipping issues, enabling smoother gear shifts and responsive driving.
• Genuine MINI Parts: Guaranteed quality and compatibility with your MINI vehicle, ensuring reliable performance.

Stage 2 MINI Cooper S R52 R53 Clutch Kit

Upgrade your Mini's clutch system with the Stage 2 MINI Cooper S R52 R53 Clutch Kit. Engineered for performance, this clutch kit is designed to handle increased power and torque levels. Enjoy smoother engagements and improved durability, even under high-performance driving conditions.

• Specifically designed for MINI Cooper S R52 R53 models
• Handles increased power and torque levels
• Ensures smoother engagements
• Improved durability for high-performance driving
• Engineered for optimal performance

This performance clutch installation kit is specially designed for a stage one clutch upgrade, providing a comprehensive set of components essential for optimized performance.

Key Features:

• FX100 (Stage I) Clutch: Perfect for high-performance street use
• Increased Holding Capacity: Up to 70% over stock
• Heavy-Duty Reinforced Pressure Plate: Ensures exceptional durability
• Hi-Leverage™ Pressure Ring Design: Enhances overall clutch performance
• Sprung Hub/Cushioned Disc: Offers smooth and controlled engagement
• Steel Backed Organic Friction Material: Dampened disc specifically designed for single mass flywheel

All Clutch Masters clutch kits contain essential components such as a pressure plate, clutch disc, throw-out bearing (if applicable), pilot bearing or bushing (if applicable), and alignment tool.

Upgrade your Mini with the MINI R Chassis Stage 4 S Clutch Kit - FX400 03635-HDC6-SK, designed for enthusiasts seeking enhanced performance and durability. This high-performance clutch kit offers superior handling of increased torque and horsepower, making it ideal for both street and track use. Engineered with advanced friction materials, it provides exceptional durability and heat resistance under extreme conditions. The Stage 4 S Clutch Kit ensures precise engagement and improved pedal feel, delivering a responsive driving experience that meets the demands of aggressive driving styles.

• Designed for increased torque and horsepower
• Superior handling and durability
• Advanced friction materials for heat resistance
• Precise engagement and improved pedal feel
• Ideal for street and track enthusiasts

Enhance your Mini's performance with the Stage 4 S Clutch Kit for reliable and responsive driving.

MINI F Chassis 2.0L Stage 1 Clutch Kit - FX100

A high-performance upgrade designed to enhance the driving experience of your Mini F Chassis 2.0L model. Engineered for improved clutch engagement and durability, this Stage 1 clutch kit provides increased torque capacity and smoother shifting. Its FX100 friction material ensures reliable performance under high-stress driving conditions, while the included pressure plate and release bearing guarantee a complete clutch replacement. With easy installation and superior performance, this clutch kit is perfect for enthusiasts seeking enhanced driving dynamics.

• High-performance upgrade for Mini F Chassis 2.0L model
• Improved clutch engagement and durability
• Increased torque capacity for smoother shifting
• FX100 friction material for reliable performance
• Easy installation and superior driving dynamics

The factory dual-mass flywheel in MINI N14 and N18 engines is engineered for comfort, minimizing drivetrain vibrations and smoothing out gear transitions. However, that comfort comes at a price—28.3 lbs. of rotational mass that dulls throttle response, slows acceleration, and hampers precise rev-matching. Dual-mass flywheels are also notoriously prone to failure under high-performance or tuned driving conditions, and their replacement costs can be steep.

The ECS Performance Lightweight Flywheel Kit eliminates these compromises with a precision-engineered, single-mass flywheel that delivers true enthusiast-grade performance. Weighing in at just 18.8 lbs, this flywheel sheds nearly 10 lbs. of rotating mass compared to OEM—instantly sharpening throttle response, improving clutch feel, and delivering quicker acceleration that transforms the driving dynamics of your MINI.

Performance-Oriented Design: This flywheel is specifically engineered to work with OE and aftermarket unsprung clutch discs. While dual-mass setups provide damping on stock vehicles, switching to a single-mass flywheel with an unsprung disc introduces more direct engagement—ideal for spirited daily driving or track-ready builds. Expect a more aggressive, performance-focused clutch feel.

Key Features:

Lightweight Construction: Sheds nearly 10 lbs. of rotating mass for faster revs and improved acceleration

4140 Chromoly Steel: Heat-treated to HRC 28–32 for outstanding strength, wear resistance, and dimensional stability

Precision-Balanced: Exceeds OEM G16 specification (175 g-mm) for smooth, high-RPM operation

Black Oxide Coating: Offers corrosion resistance and a professional finish

OE-Compatible Fitment: Designed to work seamlessly with N14 architecture clutch kits

SFI 1.1 Certified: Proven safe and reliable under extreme operating conditions

Optimized Step Height: Ensures maximum clutch clamping force and long-term durability

Performance Gains:

OEM Dual-Mass Flywheel Weight: 28.3 lbs

ECS Single-Mass Flywheel Weight: 18.8 lbs

Weight Savings: Nearly 10 lbs of reduced rotational mass

Results: Sharper throttle response, more precise rev-matching, and a more engaging driving experience

Kit Includes:

ECS N14/N18 Lightweight Performance Flywheel

South Bend Stage Two “Daily” Clutch Kit

Pilot Bearing

Throw-Out Bearing

Clutch Alignment Tool

(6) Genuine MINI Flywheel Bolts