ACL Race Series Connecting Rod Bearing Set BMW S65

409.99

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The ACL Race Series Connecting Rod Bearing Set for BMW’s S65 engine is built for those who expect their V8 to perform flawlessly—no matter how hard it’s pushed. The 4.0-liter S65 found in the E90, E92, and E93 M3 is a masterpiece of engineering, but it’s no secret that rod bearing wear can become an issue once the revs climb and the oil temps rise. ACL’s Race Series bearings are designed to eliminate that weak point, offering the strength, consistency, and peace of mind every high-revving M3 deserves.

Each bearing is made using ACL’s trusted tri-metal construction: a hardened steel backing for rigidity, a copper-lead layer for load strength, and a precision overlay that holds a stable oil film even at high temperatures and pressures. This combination keeps friction under control and lubrication consistent, protecting your crank and rods through extended pulls, sharp shifts, and full-throttle acceleration.

The same materials used in professional motorsport engines power these bearings. They deliver exceptional fatigue resistance, precise clearances, and long-lasting oil pressure stability—crucial for the S65’s 8,400-RPM redline. The result is smoother operation, cooler running temperatures, and a stronger bottom end that can handle serious performance builds.

Installation is straightforward. ACL designed these bearings as a direct-fit replacement for BMW’s S65 engine—no machining, no modifications, just perfect OEM geometry paired with competition-grade durability.

For E9X M3 owners who demand reliability and confidence when chasing high RPMs or track times, ACL Race Series bearings are the ultimate safeguard. They reinforce the foundation of the S65, keeping it balanced, smooth, and ready to perform—lap after lap, gear after gear.

ADDITIONAL INFORMATION:

Brand

Half Type

Identical halves

Material

F781

Min. Std Shaft Size

51,975 mm / 2.0463 in

Max. Std Shaft Size

51,991 mm / 2.0469 in

Min. Std Tunnel Size

56 mm / 2.2047 in

Max. Std Tunnel Size

56,013 mm / 2.2052 in

Max Wall at Crown

1,998 mm / 0.0787 in

Max Overall Length

15,9 mm / 0.6260 in

PREPREG is a common term for a reinforcing fabric such carbon which has been pre-impregnated with a resin system. This resin system (typically epoxy) already includes the proper curing agent. As a result, the prepreg is ready to be laid into the mold without the addition of any more resin. In order for the laminate to cure, an autoclave production process is used, a combination of high pressure and heat.

  • Maximum strength and performance characterictics. In a hand layup production process, it is difficult to achieve 50% fabric and 50% resin content.  Typical hand laminates, even when vacuum bagged, end up with a significant amount of excess resin. Excess resin increases brittleness and reduces overall strength properties. On the other hand, most prepregs contain around 35% resin. This is ideal for maximum cured properties and generally impossible to achieve in normal hand lamination.
  • Uniformity and repeatability. The prepreg is of uniform thickness and each part coming out of the mold may theoretically be the same. Vacuum bagging technology may have some errors in processing, but prepreg ensures production consistency.
  • Reduce curing time. After the thermal curing cycle, no need to wait for the standard 48 hours can be fully cured.
  • Aesthetics. Although prepreg processing still requires mold preparation and demoulding, prepreg processing eliminates air bubbles, makes it easier to obtain a smooth, glossy surface as well as eliminates any seaming lines.

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We offer free tracked shipping on all orders within mainland EU. Orders to remote areas such as Malta, Cyprus, and Iceland may incur a surcharge. Worldwide shipping is also available—please contact us for a quote.

Most orders dispatch within one business day (Monday to Friday). EU delivery takes 3–5 working days from dispatch, and tracking details will be provided via email once your order has shipped.

Please note that import taxes may apply outside the EU, and these are the responsibility of the buyer. Some items may ship directly from our suppliers and may have varying delivery times. If an item is out of stock, we will contact you to discuss the available options.

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RETURNS

Changed your mind? You can return unused, uninstalled items in original packaging within 30 days of delivery. Return shipping is the customer’s responsibility unless the item is faulty.

Custom, used, or built-to-order items are non-returnable.

Once we receive and inspect your return, refunds are typically processed within 10 business days.

If your item is damaged or incorrect, contact us within 48 hours with photos and order details.

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WARRANTY

All VA and VA Motorsports products come with a 1-year limited warranty covering manufacturing defects and fitment issues. For third-party items, warranty terms vary by brand—please check the product listing or contact us for details.

This warranty does not cover wear and tear, incorrect installation, cosmetic damage, labor, or third-party costs.

To start a claim, email us with your order number, issue description, and photos. If the claim is approved, we’ll offer a replacement, store credit, or a refund.

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ACL Race Series Connecting Rod Bearing Set BMW S65
ACL Race Series Connecting Rod Bearing Set BMW S65
409.99