{"product_id":"ecs-tuning-b6-7-s4-performance-clutch-lightweight-flywheel-kit","title":"ECS Tuning B6\/7 S4 Performance Clutch \u0026 Lightweight Flywheel Kit","description":"\u003cstyle\u003e\n.esp-sec{--acc:#e11b22;--ink:#f2f4f6;--mut:#9aa3ad;--line:#2a2f35;--bg:#15181c;--panel:#0b0d0f;background:var(--panel);color:var(--ink);line-height:1.55;padding:22px 26px;border-radius:12px;margin:0 0 14px;display:block;width:100%;box-sizing:border-box}\n.esp-sec *{box-sizing:border-box}\n.esp-sec h2{font-size:1.4rem;letter-spacing:.04em;text-transform:uppercase;margin:0 0 .8rem;padding-left:.75rem;border-left:5px solid var(--acc);line-height:1.15;color:#fff}\n.esp-sec p{margin:0 0 .9rem;color:#d6dadf}\n.esp-sec p:last-child{margin-bottom:0}\n.esp-sec .esp-lead{font-size:1.15rem;color:#fff}\n.esp-sec .esp-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:.4rem 0 0}\n.esp-sec .esp-card{background:var(--bg);border:1px solid var(--line);border-top:3px solid 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summary::-webkit-details-marker{display:none}\n.esp-sec details summary:after{content:\"+\";float:right;color:var(--acc);font-weight:700}\n.esp-sec details[open] summary:after{content:\"\\2013\"}\n.esp-sec details p{margin:.6rem 0 0;color:#cfd4d9}\n.esp-sec .esp-doc{display:inline-block;margin:0 .6rem 0 0;padding:.5rem 1rem;background:var(--acc);color:#ffffff;border-radius:6px;text-decoration:none;font-weight:700;font-size:.92rem}\n.esp-sec .esp-doc:hover{background:#ff3b30;color:#ffffff}\n.esp-sec .esp-note,.esp-sec .esp-doc{float:none}.esp-sec p.esp-note{display:block;clear:both;width:100%}\n.esp-sec .esp-split{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:center}\n.esp-sec .esp-split.rev{grid-template-columns:.9fr 1.1fr}\n.esp-sec .esp-split img{width:100%;height:auto;border-radius:10px;display:block}\n@media(max-width:720px){.esp-sec .esp-split,.esp-sec .esp-split.rev{grid-template-columns:1fr}}\n.esp-sec .esp-card img{width:100%;height:auto;border-radius:8px;margin:0 0 10px;display:block}\n.esp-sec .esp-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}\n.esp-sec .esp-step{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:16px 18px;position:relative}\n.esp-sec .esp-step .n{display:inline-block;width:30px;height:30px;line-height:30px;text-align:center;border-radius:50%;background:var(--acc);color:#ffffff;font-weight:800;margin-bottom:8px}\n.esp-sec .esp-step h4{margin:0 0 .35rem;font-size:.95rem;text-transform:uppercase;letter-spacing:.05em;color:#fff}\n.esp-sec .esp-step .tag{display:inline-block;margin-top:10px;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--acc);border:1px solid var(--acc);border-radius:4px;padding:2px 8px}\n.esp-sec table.esp-suite{width:100%;border-collapse:collapse;font-size:.92rem}\n.esp-sec table.esp-suite th,.esp-sec table.esp-suite td{padding:.5rem .6rem;border-bottom:1px solid var(--line);color:#d6dadf;text-align:center}\n.esp-sec table.esp-suite th{background:var(--bg);color:#fff;text-transform:uppercase;letter-spacing:.06em;font-size:.78rem}\n.esp-sec table.esp-suite td:first-child,.esp-sec table.esp-suite th:first-child{text-align:left}\n.esp-sec table.esp-suite td.y{color:var(--acc);font-weight:800}\n.esp-sec table.esp-suite td.n{color:#555}\n.esp-sec ul.esp-notes{margin:.2rem 0 0;padding-left:1.2rem;color:#d6dadf}\n.esp-sec ul.esp-notes li{margin:0 0 .35rem}\n.esp-sec .esp-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin:.4rem 0 0}\n.esp-sec .esp-stat{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:16px 18px;text-align:center}\n.esp-sec .esp-stat small{display:block;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--mut)}\n.esp-sec .esp-stat strong{display:block;font-size:1.5rem;color:var(--acc);margin:4px 0;line-height:1.1}\n.esp-sec ol.esp-ol{margin:.4rem 0 0;padding-left:1.3rem;color:#d6dadf}.esp-sec ol.esp-ol li{margin:0 0 .4rem}\n.esp-sec .esp-video{position:relative;padding-top:56.25%;border-radius:10px;overflow:hidden;margin:.6rem 0 0}.esp-sec .esp-video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}\n\u003c\/style\u003e\n\u003cdiv class=\"esp-sec\"\u003e\u003cdiv class=\"esp-split\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"esp-lead\"\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003eThe ECS Tuning Stage 2 Performance Organic Clutch \u0026amp; 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.\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003eEngineered 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.\u003c\/p\u003e\n\u003cp\u003eRace-Grade Durability \u0026amp; 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.\u003c\/p\u003e\n\u003cp\u003eFor 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cimg src=\"https:\/\/assets.ecstuning.com\/product_library\/1932244_x800.jpg\" alt=\"B6\/7 S4 Performance Clutch \u0026amp; Lightweight Flywheel Kit\" loading=\"lazy\"\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"esp-sec\"\u003e\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul class=\"esp-feat\"\u003e\n\u003cli\u003e29% 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.\u003c\/li\u003e\n\u003cli\u003e445 lb-ft Torque Holding Capacity: Upgraded pressure plate delivering 2,055 lbs of clamping force easily handles Stage 1 \u0026amp; 2 tuned 4.2L engines.\u003c\/li\u003e\n\u003cli\u003e240mm Full-Face Organic Disc: Maximizes surface contact for predictable, chatter-free modulation and long friction life without aggressive flywheel wear.\u003c\/li\u003e\n\u003cli\u003eMinimal NVH Increase: Single-mass flywheel architecture engineered specifically to maintain daily street comfort and quiet operation.\u003c\/li\u003e\n\u003cli\u003e4140 Chromoly Construction: Heat-treated to HRC 28–32 and black zinc coated for superior thermal stability and corrosion resistance.\u003c\/li\u003e\n\u003cli\u003eSFI 1.1 Certified \u0026amp; Dynamically Balanced: Tested to 1.5x redline and balanced past OEM G16 specs for absolute safety at elevated RPMs.\u003c\/li\u003e\n\u003cli\u003eFlawless OEM Electronics Integration: Integrated tone ring with exact OEM tooth profile works natively with factory engine management.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esp-sec\"\u003e\n\u003ch2\u003eWhat's included\u003c\/h2\u003e\n\u003cul class=\"esp-feat\"\u003e\n\u003cli\u003eECS Lightweight Flywheel\u003c\/li\u003e\n\u003cli\u003e​ECS Organic Stage 2 Clutch Kit\u003c\/li\u003e\n\u003cli\u003eFlywheel bolts (8)\u003c\/li\u003e\n\u003cli\u003ePressure plate bolts (6)\u003c\/li\u003e\n\u003cli\u003eExhaust Locking Nut (6)\u003c\/li\u003e\n\u003cli\u003eClutch pilot bearing\u003c\/li\u003e\n\u003cli\u003eThrowout Bearing\u003c\/li\u003e\n\u003cli\u003eClutch Alignment Tool\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esp-sec\"\u003e\n\u003ch2\u003eProduct Development\u003c\/h2\u003e\n\u003cp\u003eOur B6\/7 S4 Performance Clutch \u0026amp; Lightweight Flywheel Kit was designed, engineered, tested, and quality inspected by our Research \u0026amp; 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esp-sec\"\u003e\n\u003ch2\u003eInstall\u003c\/h2\u003e\n\u003cdiv class=\"esp-badges\"\u003e\u003cdiv class=\"esp-badge\"\u003e\n\u003cspan\u003eWarranty\u003c\/span\u003e\u003cstrong\u003eLifetime Replacement\u003c\/strong\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"ECS Tuning","offers":[{"title":"Default Title","offer_id":67790515863856,"sku":"5492643","price":1608.55,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7582\/4176\/files\/2111219_x800_0f838081-c07b-4ba5-82c8-93c9654bf745.jpg?v=1789509072","url":"https:\/\/es-performance.com\/products\/ecs-tuning-b6-7-s4-performance-clutch-lightweight-flywheel-kit","provider":"Eurosport Performance","version":"1.0","type":"link"}