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Acl race series connecting rod bearing set bmw n20
Acl race series connecting rod bearing set bmw n20 - image 2
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The ACL Race Series Connecting Rod Bearing Set for BMW N20 engines is built for engines that do more than the factory ever planned for. Once boost rises, heat builds, and the RPM needle climbs past comfort zones, stock bearings can start to give up. ACL’s Race Series bearings are designed for that exact moment—the point where strength, precision, and reliability matter most.

Each bearing is built using tri-metal construction: a hardened steel backing for rigidity, a copper-lead layer for strength under load, and a precision overlay that keeps a consistent oil film even when things get hot. That layered design manages friction and oil pressure across the crank journals, protecting your rods and crank from wear and scoring through every pull and heat cycle.

The Race Series material used by ACL has earned its place in motorsport engines worldwide. It offers high fatigue strength, smooth oil control, and excellent embeddability—keeping clearances tight and performance consistent. You can run higher boost, stay in the upper RPM range, and rely on your bearings to do their job lap after lap.

Designed as a direct-fit replacement for the BMW N20 engine found in models like the 320i, 328i, X1, X3, and Z4, these bearings drop in with factory precision. No modifications, no machining—just exact fitment and proven results.

For anyone running a tuned or track-ready N20, the ACL Race bearings are a simple but vital upgrade. They add strength where you need it most, giving your engine the reliability to handle long pulls, high boost, and the kind of spirited driving that pushes limits. It’s the quiet protection that lets you drive harder—and worry less.

ADDITIONAL INFORMATION:

Brand

Half Type

Upper & lower
Material

F781
Min. Std Shaft Size

49,973 mm / 1.9674 in
Max. Std Shaft Size

49,993 mm / 1.9682 in
Min. Std Tunnel Size

53,6 mm / 2.1102 in
Max. Std Tunnel Size

53,616 mm / 2.1109 in
Max Wall at Crown

1,793 mm / 0.0706 in
Max Overall Length

17,55 mm / 0.6909 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 N20
ACL Race Series Connecting Rod Bearing Set BMW N20
259.99€