$476.00 USD
$476.00 USD


Manley Performance I-Beam Connecting Rod Set, expertly crafted from 4340 forgings, exclusively designed for N55 and S55 engines. Specifically engineered to replace BMW part #11247624615 and #11247586492, these rods are specifically designed for BMW N55B30 and S55B30 engines with a length of 144.35 mm.
These rods are capable of enduring RPMs of up to 9500, showcasing exceptional strength to handle forced induction engines generating up to 1400HP.
Included in the set are ARP Connecting Rod Bolts, adding further value to the package. Each rod undergoes a rigorous manufacturing process, including heat treatment, stress relief, shot peening, and individual magnafluxing to ensure superior quality. The sets are meticulously weight matched with a precision of +1.5 grams, guaranteeing optimal balance.
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$476.00 USD
$476.00 USD
This product can expose you to chemicals such as lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
For a complete list of chemicals known to cause harm, visit https://www.p65warnings.ca.gov/chemicals.
Under the federal Clean Air Act (42 U.S.C. §7522(a)(3)), it is illegal to manufacture, sell, install, or use any part that defeats or alters a motor vehicle’s emission control system for use on public roads. Unless a product has received an Executive Order (EO) from the California Air Resources Board (CARB), it is not legal for use or installation on any pollution-controlled vehicle driven on public highways.
Some states have CARB-equivalent or independent emissions laws. Customers are responsible for verifying local regulations before purchasing or installing emissions-related products.
All performance, racing, or competition parts sold by this company are intended solely for off-road, closed-course, or competition use on vehicles that are never registered or used on public highways.
Kies Motorsports, LLC sells and markets these products for lawful use only. We do not condone or authorize the use of emission-control defeat devices or any modification that violates the Clean Air Act or state regulations.