BMW M3, M5, M6, Z4M LSD Clutch pack + Free play delete

<!-- split --> <h3 style="text-align: center;"><strong>RacingDiffs LSD Clutch Pack</strong></h3> <h3 style="text-align: center;"><strong> Upgrade for BMW M3, M5, M6 &amp; Z4M (M Clunk Fix)</strong></h3> <p> </p> <p>Looking to enhance your BMW’s traction, eliminate the infamous <strong>M Clunk</strong>, and improve handling on track or spirited road drives? The RacingDiffs <strong>Clutch Pack LSD Rebuild Kit</strong> is the proven solution for restoring and upgrading OEM Motorsport limited-slip differentials.</p> <p>This rebuild kit directly replaces the stock clutch plates — with no modifications required — while delivering noticeably improved locking performance and long-term durability.</p> <!-- FEATURES --> <details class="rd-accordion"> <summary><strong>Features</strong></summary> <ul> <li> <strong>Direct OEM Replacement:</strong> Installs in place of the factory clutches with no machining, no grinding, and no special modifications.</li> <li> <strong>M-Clunk Elimination:</strong> Upgraded friction discs restore proper internal tension and significantly reduce or eliminate the common “clunk” noise during gear transitions.</li> <li> <strong>Enhanced Locking Performance:</strong> Provides higher and more stable lock than worn OEM clutches — ideal for spirited and track driving.</li> <li> <strong>Protects Your Viscous Coupler:</strong> Reduces stress and prevents premature failure by offering consistent LSD performance under load.</li> <li> <strong>Premium Molybdenum-Ceramic Coating:</strong> Motorsport-grade friction layer designed for heat resistance, smooth engagement, and long lifespan.</li> <li> <strong>Complete Video Support:</strong> Step-by-step installation tutorials available in the RacingDiffs <strong><a title="BMW LSD installation tutorials" rel="noopener" href="https://racingdiffs.com/pages/bmw-lsd-resources" target="_blank">Video Gallery</a>.</strong> </li> </ul> </details> <!-- BENEFITS --> <details class="rd-accordion"> <summary><strong>Performance Benefits</strong></summary> <ul> <li>Completely resolves M Clunk, tapping, and free-play noises.</li> <li>Provides smoother and more consistent LSD lock engagement.</li> <li>Improves stability and rear-end control during cornering and acceleration.</li> <li>Extends the lifespan of the differential assembly.</li> <li>Perfect upgrade for track-day and high-performance driving.</li> </ul> </details> <!-- ADVANCED PACK --> <details class="rd-accordion"> <summary><strong>Advanced Pack Option</strong></summary> <p>The Advanced Pack includes everything from the Basic Clutch Kit PLUS the complete <a title="BMW Motorsport differential bearing and seal set" rel="noopener" href="https://racingdiffs.com/collections/bearings/products/bmw-motorsport-differential-bearing-set" target="_blank"><strong>Bearing &amp; Oil Seal Replacement Set</strong></a>.</p> <ul> <li> <strong>Save 10%</strong> when purchased as a bundle.</li> <li>Prevents differential whine, bearing wear, and leaks.</li> <li>Ideal for restoring a high-mileage or track-driven differential.</li> </ul> </details> <!-- FREE PLAY DELETE --> <details class="rd-accordion"> <summary><strong>Fixing the Free Play / Tap Issue</strong></summary> <p>Most BMW M3 Motorsport LSDs suffer from right-side drive shaft free play, causing a “tap” or “click” when selecting 1st gear. The RacingDiffs <strong>FREE PLAY DELETE SHIM</strong> provides a permanent solution and eliminates oil leakage on the right side of the differential.</p> </details> <!-- FITMENT --> <details class="rd-accordion"> <summary><strong>Fitment</strong></summary> <p><em>Compatible with BMW Motorsport clutch-type LSD units found in:</em></p> <ul> <li>BMW M3 (E46, E36 Motorsport LSD retrofits)</li> <li>BMW M5</li> <li>BMW M6</li> <li>BMW Z4M</li> </ul> </details> <!-- INSTALLATION --> <details class="rd-accordion"> <summary><strong>Installation Tutorial</strong></summary> <p>Watch the full LSD rebuild and M-Clunk explanation here:</p> <p style="text-align: center;"><a title="Explaining BMW M3 differential problem and RacingDiffs M Clunk repair kit" rel="noopener" href="https://youtu.be/zS0c7_3C4qA" target="_blank"> <img style="margin-bottom: 16px; float: none;" alt="BMW M3 M5 M6 Z4M LSD rebuild kit for eliminating M-Clunk issue using RacingDiffs friction plates" src="https://cdn.shopify.com/s/files/1/0361/7652/7495/files/bmw-m3-m5-m6-z4m-lsd-rebuild-kit-m-clunk-fix.webp?v=1750333039"> </a></p> </details> <!-- NOTES --> <details class="rd-accordion"> <summary><strong>Additional Notes</strong></summary> <p><strong>The <a href="https://racingdiffs-store.myshopify.com/products/bmw-differential-opening-tool-m-clunk-repair" title="BMW LSD opening tool for M-Clunk repair" rel="noopener" target="_blank">Opening Tool</a> is required</strong> for RD4025, RD4026, and RD4060:<a title="BMW LSD opening tool for M-Clunk repair" rel="noopener" href="https://racingdiffs-store.myshopify.com/products/bmw-differential-opening-tool-m-clunk-repair" target="_blank"><strong></strong></a></p> <p><strong>Recommended Oil:</strong> Ravenol Racing 75w140</p> </details> <!-- HASHTAGS --> <p><br></p> <style> /* EXACT SETTINGS YOU APPROVED — UNCHANGED */ .rd-accordion { border: 1px solid #ddd; border-radius: 4px; margin: 0.4rem 0; padding: 0; background: #fff; } .rd-accordion > summary { cursor: pointer; list-style: none; padding: 8px 12px; font-weight: 600; font-size: 0.95rem; display: block; } .rd-accordion > summary::-webkit-details-marker { display: none; } .rd-accordion > *:not(summary) { padding: 8px 14px 12px 14px; } .rd-accordion details { margin: 0.3rem 0; } .rd-accordion details > summary { cursor: pointer; list-style: none; font-weight: 600; font-size: 0.95rem; } .rd-accordion details > summary::-webkit-details-marker { display: none; } .rd-accordion details > *:not(summary) { padding-left: 18px; } .rd-accordion summary b { font-size: 0.95rem; } </style>