B6/7 S4 Performance Clutch & Lightweight Flywheel Kit
- Mfg Part #
- 051558LA05AKT
- ECS Part #
- ES#5492643
- Brand
-
Free Shipping
Product Details
The naturally aspirated 4.2L V8 in your Audi B6/B7 S4 delivers classic V8 power and Quattro traction, but the factory drivetrain leaves serious performance on the table. Tipping the scales at a hefty 26.5 lbs, the stock dual-mass flywheel dulls engine response, slows rev-matching, and masks the true capability of your high-revving 8-cylinder engine. Pair that with a factory clutch prone to slipping under tuned torque levels, and your drivetrain quickly becomes the bottleneck.
The ECS Tuning Stage 2 Performance Organic Clutch & Lightweight Flywheel Kit is the ultimate direct-replacement drivetrain overhaul for enthusiastic street drivers and track weekenders alike. By combining our high-clamp Stage 2 organic clutch with our precision-engineered 18.9 lb. lightweight single-mass flywheel, this kit sheds 7.6 lbs (a massive 29% rotational mass reduction) right off the crankshaft.
The result? Instantaneous throttle response, lightning-fast revs on downshifts, faster acceleration out of corners, and the torque capacity to handle up to 445 lb-ft of torque.
Engineered for Street Civility
Performance upgrades shouldn't ruin your morning commute. Where many lightweight single-mass flywheels compromise daily drivability with aggressive noise, vibration, and harshness (NVH), our extensive testing confirms minimal to no increase in noise when installed. Coupled with a 240mm full-face high-performance organic disc, you get smooth, progressive modulation and chatter-free engagement with factory-like pedal effort.
Race-Grade Durability & Safety
Each flywheel is precision-machined from heat-treated 4140 chromoly steel and hardened to HRC 28–32 for extreme strength, stress relief, and thermal stability under heavy load. Non-friction surfaces feature a black zinc coating for long-term corrosion resistance, and every unit undergoes dynamic balancing exceeding OEM G16 specifications (to 175 g-mm) for vibration-free operation all the way to redline.
For maximum peace of mind, the flywheel is SFI 1.1 certified—having successfully passed rigorous independent laboratory testing spun at 1.5x engine redline for one full hour without failure. An integrated tone ring featuring an OEM-matched gear tooth profile ensures seamless, flawless interaction with factory engine electronics and crankshaft position sensors.
Key Benefits:
- 29% Rotational Mass Reduction: Drops flywheel weight from 26.5 lbs to just 18.9 lbs for dramatic improvements in engine rev speed and throttle response.
- 445 lb-ft Torque Holding Capacity: Upgraded pressure plate delivering 2,055 lbs of clamping force easily handles Stage 1 & 2 tuned 4.2L engines.
- 240mm Full-Face Organic Disc: Maximizes surface contact for predictable, chatter-free modulation and long friction life without aggressive flywheel wear.
- Minimal NVH Increase: Single-mass flywheel architecture engineered specifically to maintain daily street comfort and quiet operation.
- 4140 Chromoly Construction: Heat-treated to HRC 28–32 and black zinc coated for superior thermal stability and corrosion resistance.
- SFI 1.1 Certified & Dynamically Balanced: Tested to 1.5x redline and balanced past OEM G16 specs for absolute safety at elevated RPMs.
- Flawless OEM Electronics Integration: Integrated tone ring with exact OEM tooth profile works natively with factory engine management.
KIT CONTENTS
- ECS Lightweight Flywheel
- ECS Organic Stage 2 Clutch Kit
- Flywheel bolts (8)
- Pressure plate bolts (6)
- Exhaust Locking Nut (6)
- Clutch pilot bearing
- Throwout Bearing
Clutch Alignment Tool
PRODUCT DEVELOPMENT
Our B6/7 S4 Performance Clutch & Lightweight Flywheel Kit was designed, engineered, tested, and quality inspected by our Research & Development team at our Wadsworth, Ohio, facility. We strive 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 our in-house 3D printer, and rigorous long-term product testing.
- 059141031P
- 079141117AX
- 079141117D
- 079105266E
This Part Fits the Following Vehicles
| Make | Model | Submodel | Engine | Special Fitment Notes |
|---|---|---|---|---|
| Audi | B6 S4 | All | V8 | Use vehicle selector to confirm fitment |
| Audi | B7 S4 | All | V8 | Use vehicle selector to confirm fitment |
Kit Contents
| Description | Brand | Qty | Lifetime | |
|---|---|---|---|---|
| Clutch Pilot Bearing |
|
1 | YES | |
| 240mm Clutch Alignment Tool |
|
1 | YES | |
| Allen Bolt - Priced Each |
|
6 | YES | |
| Throwout Bearing |
|
1 | YES | |
| Locking Nut - Priced Each |
|
6 | YES | |
| 4.2 Performance Clutch Kit - Organic Stage 2 |
|
1 | YES | |
| B6/B7 4.2L Flywheel |
|
1 | NO |
Some kit components are covered by our Lifetime Replacement Program
Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.
If you have any questions, would like to learn more or are ready to place a replacement claim, click here!
Return and Exchanges
Need to set up a return? Click here to begin: Return Process
All you need is your order number and email address.
New/Unused Product Returns
ECS Tuning will accept returns for unused products within 90 days of the ship date for a refund to the original payment method used. The customer is responsible for the return shipping costs and fees. If selecting to use a prepaid shipping label, the shipping cost will be deducted from the total refunded amount. All new/unused products must be new, unused and must be in the original packaging, including labeling, manuals, hardware, etc. Special order parts are non-refundable.
In the event that we find an error on our website or on behalf of an ECS Tuning Representative, we will provide a return shipping label from the original delivery location.
Refused Packages
Any domestic orders that are returned to ECS Tuning as refused by receiver or non-deliverable will be subject to a return handling fee and will be processed as a return in compliance with our standard return policy, including a 15% restocking fee.
Any international orders that are refused at the time of delivery will be subject to carrier abandonment of the package, at which time the ordered products would be discarded by the carrier. The customer will not be refunded for the value of the order and the discarded products are no longer retrievable.
Return Process
ECS Tuning now offers an online returns solution! To get started, simply log into your ECS Tuning account, Click the "View Orders" button on the My Account home page and select the order that you wish to make a return on to begin. If you have any questions, feel free to reach out to our Customer Service Team for assistance!
Please note: Refunds will be processed to the original payment method used on the order or to an in store credit, respective to the type of return that is made as well as any pre-existing arrangements with an ECS Tuning Customer Service Representative. In the event that multiple forms of payment were used, we will refund the value to an in store credit. In the event that a return label is provided, these charges may be deducted from the total refund you receive.
Original shipping costs are non-refundable and the buyer is responsible for return shipping charges. ECS Tuning will not accept COD deliveries.
All in store credit balances will expire after one year from the original purchase date.
Shipping Policy
Free Shipping On Orders $49 & Up
Items marked with a 'Free Shipping On Orders $49 and Up' logo may qualify for free standard economy ground shipping to the contiguous United States (48 states) for most orders with a value greater or equal to $49.00 USD. Oversized products and direct ship products are excluded from this offer unless otherwise noted.
Free Shipping
Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.
The policies listed above are subject to change at any time without notice.
Lifetime Replacement
Want to know more about our Lifetime Replacement program?
Click here to learn more.
Why You Should Shop From ECS Tuning
ECS Tuning stands out as more than an automotive parts supplier-it's a vibrant community fueled by a shared passion for cars. Born from the enthusiasm of car lovers, we offer an unmatched understanding and commitment to the automotive world, providing high-quality parts and accessories sourced from our own experiences. Our selection is meticulously crafted to meet the highest standards of performance, quality, and design, catering to both the latest trends and classic styles.
Our distinct advantage lies in our passionate team and comprehensive support, offering expert advice and seamless service from selection to installation. Shopping with ECS brings exclusive perks, including our Lifetime Replacement Guarantee and free shipping on orders over $49, enhancing the value of every purchase. As a central hub for car enthusiasts, ECS Tuning fosters a rich community where ideas and experiences flourish, transforming us from a mere supplier into a platform where automotive dreams come to life.
Cancellation Policy
At ECS Tuning, we understand that plans can change. That's why we offer a flexible cancellation policy for our customers. You may cancel your order at any time before you receive the shipment confirmation. This policy is designed to provide you with peace of mind and the flexibility to make adjustments to your purchases as needed. Should you decide to cancel your order, simply reach out to our customer service team, and we will assist you with the process swiftly and efficiently.
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