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K1 Technologies

K1 005EP17148

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Boost-Ready Connecting Rods for B58 Engines from K1 Technologies

K1 Technologies has expanded their lineup of race-ready connecting rods with their latest H-beam connecting rod for the Toyota Supra/BMW B58 engine. As part of the iconic Supra’s re-launch, this engine has already become a popular build platform, with high-boost and big HP builds calling for increased connecting rod strength. Forged from 4340 steel and machined within precise tolerances, these connecting rods for the B58 boast a winning combination of features, including:

  • Forged 4340 steel material provides strength and reliability
  • Designed and developed by in-house engineering team through work with engine builders and racers
  • Shot peening surface treatment improves fatigue life for long and reliable performance
  • Highly reputable ARP 2000 series fasteners included H-beam design provides proven strength
  • Rod length 149.18MM
  • Set of 6

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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