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Real experience
We test before we recommend.
PRODUCT DESCRIPTION
K1 forged connecting rods and crankshafts are manufactured from the highest quality 4340 steel. Thanks to years of design and production experience, we offer excellent quality products at an affordable price. K1 Technologies products are manufactured with extreme precision (bearing bore tolerances are held to +/- 0.0001"), meeting the high demands of racing and rallying. Only ARP bolts are used (ARP 2000 as standard and 625 or higher bolts as an option). Bronze bushings reduce friction and contribute to a longer lifespan. Press-fit pins are offered for some connecting rod sizes. All connecting rods are designed, finished, and 100% inspected in the USA.
All K1 Technologies crankshafts are manufactured from 4340 steel and feature hardened cores for increased tensile strength. Bearing surfaces are polished and nitrided for increased wear resistance. ARP bolts are installed and torqued to exact specifications before honing to ensure precise and repeatable bore geometry. All K1 Technologies connecting rods are honed in-house. K1 Technologies connecting rods are weight-matched and packaged in boxes, with weights (rotating, reciprocating, and total) marked to facilitate the balancing process.
Product available for order.










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.