What material are these connecting rods made from?

These connecting rods are forged from 4340 aircraft-quality steel. This material is known for its strength and reliability under high stress conditions.

What is the advantage of the H Beam design?

The H Beam design is popular in performance engines because it provides a strong structure while keeping the weight down. This helps with engine balance and responsiveness.

Do these connecting rods come with bolts?

This set includes the connecting rods themselves. While they are designed to use 5/16 inch bolts for the cap, it's recommended to check the product details or consult with a specialist to confirm if bolts are included or if they need to be purchased separately.

Specifications

Brand: Manley Performance
Part #: 15038-4

Manley Mazda Speed SMZR 2.5L 5.9 H/T H Beam Connecting Rod Set - 4 cyl

Name: Manley Mazda Speed SMZR 2.5L 5.9 H/T H Beam Connecting Rod Set - 4 cyl
Brand: Manley Performance
SKU: manley-performance-manley-mazda-speed-smzr-2-5l-5-9-h-t-h-beam-connecting-rod-se-t14-521757
Price: 774.17 USD
Availability: BackOrder

$774.17

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Manley Performance H Beam Connecting Rod Set for Mazda Speed SMZR 2.5L 4 cyl engines.

Key Features

Fits Mazda Speed SMZR 2.5L 4-cylinder engines.
Forged from 4340 aircraft-quality steel for high strength and durability.
H Beam design offers a strong and lightweight profile for performance use.
Rod length measures 5.9 inches.
Utilizes 5/16 inch bolts for the connecting rod caps.
Set includes all necessary connecting rods for a 4-cylinder engine.

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About this part

Product Details

Manley Performance is well-known for making strong internal engine components, and this set of H Beam connecting rods for the Mazda Speed SMZR 2.5L engine is a prime example. If you're rebuilding the heart of your 4-cylinder engine, especially if you plan on pushing more power than stock, these rods are built to handle the increased stress.

These rods feature an H Beam design, which is a popular choice for performance applications because it offers a great balance of strength and weight. They are forged from 4340 aircraft-quality steel, a material chosen for its exceptional durability and ability to withstand high loads and RPMs. The 5.9-inch length is a specific dimension that helps maintain the correct geometry within the engine. Each rod is also equipped with a 5/16 inch bolt size for the cap, ensuring a solid connection under demanding conditions. This set includes all the necessary connecting rods for your 4-cylinder engine, ready to be installed as part of your engine build.

When installing these, it's important to ensure your crankshaft journals are within the manufacturer's specified tolerances. Proper balancing of the rotating assembly, including these new rods, pistons, and crankshaft, is also crucial for engine longevity and smooth operation. This set is designed to be a direct replacement for your factory connecting rods, but it's always recommended to consult your vehicle's service manual or a professional mechanic for the most accurate installation procedures and specifications.