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Engines and Components› Connecting Rods and Components

Manley / MMR

Manley 300M Billet Connecting Rods

$3,226.99 $199.69 Save $3,027.30

SKU: 400280

In Stock
In Stock
Ships by Jul 29
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30 Days Return
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Description

The MMR 5.4/5.8 Iron Block Manley 300M Billet Connecting Rods are forged from 300M aircraft quality vacuum degassed material. They are fully machined to be lightweight and strong. The rods are shot peened to Mil specs and 100% magnafluxed.

These connecting rods feature 7/16 ARP 2000 cap screws and are rated for up to 2000HP.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandManley / MMR
Part Number400280
CategoryEngines and Components

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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