What is the primary benefit of the Pro-H series connecting rods?

The Pro-H series connecting rods are designed with a strong I-beam profile that offers a good balance between robust strength and manageable weight. This construction is ideal for performance applications where the engine will experience higher stresses than stock.

What does 'WMC Bolt' mean in the product description?

WMC stands for Weld-on Machined Cap. This refers to a specific design for the connecting rod cap that ensures precise alignment and a very secure connection. It's a heavy-duty feature chosen for its reliability under significant engine loads.

Are these connecting rods suitable for a stock engine rebuild?

While these rods are built to be heavy-duty and can handle more stress than stock, they are primarily intended for performance or upgraded engine builds. For a completely stock rebuild without plans for increased power, they might be more robust than necessary, but they will certainly provide excellent durability.

Carrillo Pro-H Connecting Rods SCR8593-4

Name: Carrillo Subaru EJ18/EJ20/EJ22/EJ257 (WRX Sti) Pro-H 3/8 WMC Bolt Heavy Duty Connecting Rods
Brand: Carrillo
SKU: carrillo-carrillo-subaru-ej18-ej20-ej22-ej257-wrx-sti-pro-h-3-8-wmc-bolt-heavy-d-t14-4386606
Price: 1269.70 USD
Availability: BackOrder

Carrillo Subaru EJ18/EJ20/EJ22/EJ257 (WRX Sti) Pro-H 3/8 WMC Bolt Heavy Duty Connecting Rods

$1269.70

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Carrillo Pro-H connecting rods for Subaru EJ engines. Heavy duty, 3/8" WMC bolts.

Key Features

Fits Subaru EJ18, EJ20, EJ22, and EJ257 engines.
Pro-H series I-beam connecting rods.
Includes heavy-duty 3/8 inch WMC bolts.
Designed for performance and heavy-duty applications.
Well-built for reliable power transfer.

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Product Details

This set includes four Carrillo Pro-H connecting rods, designed for Subaru EJ18, EJ20, EJ22, and EJ257 engines, commonly found in WRX STI models. These rods are built to handle the increased stress and demands of performance applications, offering a robust solution for engine builds that push beyond stock capabilities.

The Pro-H series from Carrillo is known for its strong construction, utilizing a proprietary I-beam design that balances strength with weight. These particular rods feature 3/8 inch WMC (Weld-on Machined Cap) bolts, which are a heavy-duty option chosen for their reliability under high loads. The WMC design allows for precise cap alignment and secure fastening, crucial for maintaining proper bearing clearance and preventing rod failure during high-RPM operation or under significant cylinder pressure. This attention to detail in their construction means you're getting a well-built component ready for serious use.

When rebuilding or upgrading your Subaru's EJ engine, especially for performance tuning, selecting connecting rods that can reliably transfer power from the pistons to the crankshaft is paramount. These Carrillo rods are a popular choice for builders who need a dependable component that offers improved durability over OEM parts. They are designed to fit right into your engine, making them a solid option for those looking to enhance their engine's internal strength.