Engines and Components› Camshafts and Valvetrain

Modular Motorsports Racing (MMR)

High-Performance Exhaust Valves

$2,011.50

SKU: 520600

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
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Overview

They are built to withstand up to 11,000+ rpm and 4000hp, making them suitable for naturally aspirated road race vehicles or turbocharged Pro Mods. These valves prevent dropped exhaust valves in high-performance scenarios.
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The MMR Severe Duty Exhaust Valves (520600) are engineered for extreme performance, capable of handling up to 11,000+ rpm and 4000hp. These valves are an ideal choice for naturally aspirated road race vehicles and turbocharged Pro Mod applications, ensuring reliability where factory components may fail. Designed as a direct "plug and play" upgrade, these valves fit specifically into 5.2 GT350 and 2020+ GT500 cylinder heads. They feature a factory valve size with an undercut for improved flow compared to stock valves, contributing to increased power output. The valves also include a single bead lock retainer groove and come with 16 bead locks included for a secure installation. It is important to note that while these valves are designed for the 5.2L GT350 and 2020+ GT500, they are specifically an upgrade for the exhaust side. Other 5.0 Ford Coyote engines (Gen 1-4) utilize different valve part numbers, and these severe duty exhaust valves are explicitly stated to *not* fit GT350 cylinder heads that are not the 5.2L variant.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandModular Motorsports Racing (MMR)
Part Number520600
CategoryEngines and Components

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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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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