01
Real experience
We test before we recommend.
PRODUCT DESCRIPTION
The unique combination of design, metallurgy and engineering come together to offer drivers what they expect from high-performance Trimetal engine bearings.
Engineered to withstand high RPM conditions, ACL Race Series engine bearings are available for many popular 4, 6, and 8 cylinder applications and feature the following:
High-strength overlay plate with reduced thickness for improved fatigue resistance.
Hardened steel backing on all connecting rod bearings to improve bearing lining support and facilitate its retention in the housing.
Increased crush for improved bearing retention.
Elimination of flash plating on the back of the bearings for improved heat transfer and maximum grip between the bearing and its housing.
Increased eccentricity to compensate for bore distortion at high RPM and facilitate hydrodynamic oil film formation.
3/4 grooved main bearings to optimize load surface and oil flow to connecting rod bearings.
Tight and consistent wall tolerances to maintain uniform clearances. Enlarged ID chamfers on bearing edges, where necessary, to accommodate large fillet radii on high-performance crankshafts.
Technical information
Tunnel [mm]: 70.000/70.019
Shaft [mm]: 64.971/64.990
Maximum thickness: 2.500
Maximum length: 22.25
Half type: Upper lower
Weight [KG]: 0.45
Applications
BMW 5 Series (F10) N63B44A 550 i / 550 i xDrive
BMW 5 Series (F10) S63B44B M5 / M5 Competition / M5 30th Anniversary
BMW 5 Series (G30, F90) S63B44B M5 / M5 Competition / M5 CS
BMW 5 Series Gran Turismo (F07) N63B44A 550 i / 550 i xDrive
BMW 5 Series Gran Turismo (F07) N63B44B 550 i / 550 i xDrive
BMW 5 Series Touring (F11) N63B44A 550 i
BMW 5 Series Touring (F11) N63B44B 550 i
BMW 6 Series Convertible (F12) N63B44A 650 i / 650 i BMW 6 Series Convertible (F12) N63B44B 650 i / 650 i xDrive
BMW 6 Series Convertible (F12) S63B44B M6 / M6 Competition
BMW 6 Series Gran Coupe (F06) N63B44B 650 i / 650 i xDrive
BMW 6 Series Gran Coupe (F06) S63B44B M6 / M6 Competition
BMW 6 Series Coupe (F13) N63B44A 650 i / 650 i xDrive
BMW 6 Series Coupe (F13) N63B44B 650 i / 650 i xDrive
BMW 6 Series Coupe (F13) S63B44B M6 / M6 Competition
BMW 7 Series (F01, F02, F03, F04) N63B44A 750 i, Li / Li xDrive / ActiveHybrid BMW 7 Series (F01, F02, F03, F04) N63B44B 750i, Li / Li xDrive
BMW 7 Series (G11, G12) N63B44C 750i, Li / Li xDrive
BMW 8 Series Convertible (G14, F91) S63B44B M8 / M8 Competition
BMW 8 Series Gran Coupe (G16, F93) S63B44B M8 / M8 Competition
BMW 8 Series Coupe (G15, F92) S63B44B M8 / M8 Competition
BMW All models N63B44 All variants
BMW M5 F10, F90 S63B44 All variants
BMW X5 (E70) S63B44A M
BMW X5 (E70) N63B44A xDrive 50i
BMW X5 (F15, F85) N63B44B xDrive 50i
BMW X5 (F15, F85) S63B44B M
BMW X5 (G05, F95) S63B44B M / M Competition
BMW X6 (E71, E72) N63B44A xDrive 50i / ActiveHybrid
BMW X6 (E71, E72) S63B44A M
BMW X6 (F16, F86) S63B44B M / xDrive 50i
BMW X6 (G06, F96) S63B44B M / M Competition










WHY THETUNERLAB
We have spent years building cars, racing, and testing the exact same parts that we sell.
01
We test before we recommend.
02
We help you choose the right part.
03
Only trusted manufacturers.
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Before and after the purchase.
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available products
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Each product indicates compatible models in the product description. If you have any questions, you can contact us and we will help you choose your best option.
-If the product is in stock, the usual delivery time is 2 to 5 working days.
-If the product is out of stock, the delivery time is 7 to 15 working days.
All our products come with the manufacturer's official warranty and comply with current regulations.
Yes. We ship orders to Spain and most European countries using specialized transport agencies.
You can contact our team via WhatsApp, email, or our website's contact form.
Shipping costs depend on the type of product, its weight, dimensions, and the destination country. In most cases, the amount is calculated automatically during the checkout process before the order is finalized.
For some products, especially large items or those with special characteristics, shipping costs may require a manual review. If the amount shown does not match the actual shipping cost, we will contact you before processing the order to inform you of the final cost and request your confirmation before proceeding. We will never charge any additional fees without your authorization.