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ACL Race Big End Bearings (N54, N55, S55)

ACL Race Big End Bearings (N54, N55, S55)

€264,95

Out of stock
Tax included. Shipping calculated at checkout.
Standard (STD)
Extra Clearance HX
+0.025
+0.25
+0.50
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ACL Race Series Big End Bearings N54 / N55 / S55 Performance Engine Upgrade
ACL Race Series Big End Bearings for BMW N54, N55 & S55 engines are a proven performance upgrade for tuned, high-performance and rebuilt BMW engines. Designed to provide increased strength and durability compared with standard bearing solutions, ACL Race Series bearings are an excellent choice when improving the reliability of your engine or carrying out preventative maintenance. Suitable for a wide range of BMW E-Series and F-Series performance models, including the 135i, M135i, M235i, 335i, 435i, 535i, 635i, M2, M2 Competition, M2 CS and M3/M4.

Key Features

  • ACL Race Series performance big end / connecting rod bearings
  • Suitable for BMW N54, N55 and S55 engines
  • Designed for increased strength and durability in performance applications
  • Ideal for tuned, high-power, track and rebuilt engines
  • Available in OE oil clearance options
  • HX Series available with an additional .001″ oil clearance
  • Oversize options available for appropriately ground crankshafts
  • Excellent upgrade when combined with ARP connecting rod bolts

Bearing Clearance Options

ACL Race Series bearings are available in multiple specifications to suit different engine builds and crankshaft requirements.

  • Standard / OE Clearance: For applications requiring standard oil clearance.
  • HX Series: Provides an additional .001″ oil clearance for builds requiring increased bearing clearance.
  • Oversize Bearings: Available for engines using appropriately ground crankshafts. Always select the correct bearing specification for your crankshaft measurements.

BMW N54, N55 & S55 Fitment

Designed for compatible BMW N54, N55 and S55 3.0-litre turbocharged engines found across a wide range of E-Series and F-Series BMW models.

  • BMW 135i – N54 / N55
  • BMW M135i – N55
  • BMW M235i – N55
  • BMW 335i – N54 / N55
  • BMW 435i – N55
  • BMW 535i – N54 / N55 applications
  • BMW 635i – N55 applications
  • BMW M2 – N55
  • BMW M2 Competition – S55
  • BMW M2 CS – S55
  • BMW M3 F80 – S55
  • BMW M4 F82 / F83 – S55

Fitment can vary depending on engine, production date and engine specification. Please confirm your engine code and required bearing clearance before ordering.

Recommended With ARP Connecting Rod Bolts

For performance engine builds and preventative maintenance, we recommend combining the ACL Race Series big end bearings with ARP connecting rod bolts. This provides an excellent upgrade package for the connecting rod assembly, particularly on tuned and high-performance N54, N55 and S55 engines.

Important – Please Check Before Opening:

We cannot accept returns of opened bearing or bolt packages. Please double-check that you have selected the correct components, bearing size and clearance specification for your engine before opening any packaging.

Engine bearing clearances should be measured and confirmed during installation. If you are unsure which ACL bearing specification is required for your engine build, please contact DC Prestige before ordering.
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⚠️ DISCLAIMER Unless explicitly stated otherwise, all products sold by DC Prestige Online LTD are designated race-only and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may be in violation of local, state, and Federal laws. DC Prestige Online LTD does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer. Read our full terms of service here.

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Important Availability Notice

Although our products may display an “In Stock” status, this indicator does not always reflect real-time inventory. Stock levels can change quickly, and some items may require additional processing time.

If you are working to a deadline, scheduling a project, or need your order within a specific timeframe, please contact us before purchasing via WhatsApp or the Contact us page so we can confirm availability and provide accurate lead times.

We’re here to help ensure you get exactly what you need, when you need it.

Last updated: 07/09/2025

We want you to be confident when shopping with us. This page explains your rights and our terms for deliveries, returns, refunds, exchanges, and digital products. It applies to UK and international customers.

1. Standard Returns (UK & International)

  • Notify us within 14 calendar days of receiving your order if you wish to return.
  • Once approved, you have a further 14 days to send the goods back.
  • Items must be unused, uninstalled, and in original packaging, with proof of purchase.
  • Refunds are processed to your original payment method within 14 days of receiving goods (or proof of postage).

Note: Standard delivery costs will be refunded; upgraded shipping (e.g., next-day) is non-refundable. You are responsible for return postage unless the item is faulty, damaged, or incorrect. Used, installed, or damaged goods beyond reasonable inspection may incur up to 50% deduction from the refund.

2. Special Order & Custom Goods

  • Special-order parts must be returned within 7 days (if non-faulty) and may incur up to a 50% restocking fee, depending on supplier terms.
  • Custom-made or made-to-order goods are non-returnable unless faulty or not as described.
  • Faulty or incorrect items may be returned within 30 days for refund, repair, or replacement.
  • Customers are responsible for providing accurate specifications; we are not liable for errors due to incorrect information.

3. Damaged, Faulty, or Incorrect Items

  • All products are inspected before dispatch.
  • If your order arrives damaged, faulty, or incorrect:
  • Contact us immediately with clear photos of the product and packaging.
  • We will cover return shipping costs and issue a refund, repair, or replacement.
  • If a parcel arrives visibly damaged, sign as “damaged” (if possible) and notify us straight away.

4. Non-Returnable Items

  • Digital downloads, codes, or software
  • Custom-made, made-to-order, or special-order goods
  • Personalised products
  • Pre-orders not yet fulfilled
  • Gift cards
  • Used, installed, or modified items
  • Hazardous materials, flammable liquids, or gases
  • Services such as painting, ceramic coatings, or extended warranties

5. Exchanges

  • To exchange an item, return it via the standard process and place a new order for the replacement.
  • Customers are responsible for return and new delivery costs.
  • If the exchange is due to a faulty or incorrect item, we will cover return shipping and send the replacement free of charge.

6. Installation at D&C Prestige

  • Cancellations or changes made less than 48 hours before your installation appointment will forfeit your fitting deposit.
  • If you cancel and request a product refund, a 15% restocking fee applies, along with the deposit fee (if applicable).

7. Shipping & International Deliveries

  • In-stock items typically dispatch within 1–2 business days; some items may take up to 72 hours or longer during busy periods.
  • Tracking information will be provided once the order is shipped.
  • International customers are responsible for customs duties, taxes, and import fees unless the item is faulty or incorrect.
  • Refunds for international returns are issued in GBP. Currency conversion fees, bank charges, and international transaction costs are the customer’s responsibility.
  • We are not liable for customs delays, clearance costs, or refusal of goods by customs authorities.

For full details, see our Shipping Policy.

8. Digital Products (Downloads, Codes, Software)

  • Digital content (e.g., Bootmod3, XHP) is typically delivered immediately or within 24 hours via email or account access.
  • By purchasing, you agree that delivery is deemed to have started once payment is made, and you waive your right to cancel under the 14-day cooling-off period allowed by UK law.
  • Refunds are only provided if the product is faulty, inaccessible due to our error, or not as described.
  • You are responsible for ensuring compatibility with your vehicle, hardware, or software; refunds are not offered if supplied correctly but incompatible due to buyer error.
  • International customers agree to the same terms.

9. How to Start a Return

  1. Visit our Contact Page and provide your full name, order number, and reason for return.
  2. Wait for return authorisation and instructions before sending your item.
  3. Once received and inspected, we’ll notify you of approval or rejection of your refund.

Proof of return: Customers must retain proof of postage for all returns. Tracked and insured services are strongly recommended.

Refund method: Refunds are issued only to the original payment method used for the purchase. We cannot refund to alternative cards, accounts, or payment services.

Refused or undeliverable parcels: If a delivery is refused, unclaimed, or undeliverable due to incorrect address details provided, the customer will be responsible for return shipping costs and any applicable restocking fees.

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ACL Race Big End Bearings (N54, N55, S55)