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Acl race series connecting rod bearing set bmw s85
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1580h

ACL Race Series Connecting Rod Bearing Set BMW S85

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479.99€

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The ACL Race Series Connecting Rod Bearing Set for BMW’s S85 engine is made for those who expect perfection from their V10. The 5.0-liter S85 that powers the E60 M5 and E63/E64 M6 is one of BMW’s most iconic high-revving engines—but it’s also known for its sensitivity to oil pressure and bearing wear at high RPM. ACL’s Race Series bearings tackle that issue head-on, delivering the strength, precision, and confidence your S85 needs when it’s pushed to its limits.

Each bearing features ACL’s proven tri-metal construction: a hardened steel backing for rigidity, a copper-lead intermediate layer for load support, and a precision overlay that maintains a consistent oil film even under extreme heat and stress. This multi-layer design ensures stable lubrication, reduced friction, and maximum protection for your crankshaft and rods—whether it’s a long high-speed run, a day at the track, or a demanding street build.

The same materials trusted in professional motorsport engines form the foundation of these bearings. They deliver superior fatigue resistance, maintain tight oil clearances, and provide stable pressure through extended high-RPM use. The result? Cooler operation, smoother performance, and a bottom end you can rely on when every gear change counts.

Installation is simple and precise. ACL designed these bearings as a direct-fit replacement for the BMW S85 engine found in the E60 M5 and E63/E64 M6—no machining, no modification, just perfect OEM geometry backed by race-grade reliability.

For M5 and M6 owners who drive their cars the way BMW intended—fast, focused, and full of character—ACL Race Series bearings are a must-have upgrade. They reinforce the heart of the legendary S85, keeping it strong, smooth, and ready to sing past 8,000 RPM—lap after lap, pull after pull.

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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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 S85
ACL Race Series Connecting Rod Bearing Set BMW S85
479.99€