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Real experience
We test before we recommend.
PRODUCT DESCRIPTION
Solid monoblock crankshaft for BMW N55 and S55
Monoblock crankshaft for BMW N55 and S55 engines
Eliminates the cracking problem of the original crankshaft
Eliminates the weakest point of the S55 engine timing system, making it significantly more reliable at over 600 hp
Manufactured on a multi-axis CNC lathe from a single setup
Made of nitrided steel, with a nitrided surface to a depth of ~0.25 mm
Reaches up to 65 HRC across the entire surface, which, unlike induction-hardened products, guarantees wear protection for both the gear teeth and the surface in contact with the crankshaft seal lip. Furthermore, the process is carried out at a lower temperature and does not cause high internal stress or material deformation
Offer for installers who already have the crankshaft tools and drilling jig
A complete kit with all the necessary accessories to modify the crankshaft is available in another listing










WHY THETUNERLAB
We have spent years building cars, racing, and testing the exact same parts that we sell.
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We test before we recommend.
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We help you choose the right part.
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Only trusted manufacturers.
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Before and after the purchase.
+10 years
of passion for drifting
+30.000
available products
+5.000
satisfied customers
24/7
passion for motoring
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.