Carrillo Mazda MZR 2.0 Pro-H 3/8 WMC Bolt Connecting Rods

If you're rebuilding the engine in your 2004-2013 Mazda 3, especially if you're aiming for more power from the MZR 2.0 engine, you'll want to consider these Pro-H connecting rods from Carrillo. Connecting rods are critical components that transfer the force from your pistons to the crankshaft, and when you're pushing an engine harder, these parts need to be up to the task. These rods are specifically designed to handle the increased stresses of a performance-oriented MZR 2.0 build.

Carrillo is well-known for making strong internal engine components, and these Pro-H rods are a prime example. They are forged from high-strength steel and feature a robust I-beam design, which Carrillo calls their Pro-H profile. This design offers a great balance of strength and weight, making them suitable for builds that see regular track use or aggressive street driving. They come equipped with Carrillo's own 3/8" WMC bolts, which are designed to provide secure clamping force under extreme conditions. The precision machining ensures they fit right and balance well within the engine, which is crucial for longevity and smooth operation at higher RPMs.

When installing these rods, it's important to follow the manufacturer's recommended torque specifications and assembly procedures to ensure they perform as intended. These rods are a significant upgrade over stock components and are a solid choice for anyone serious about building a reliable and powerful MZR 2.0 engine. They are designed to work with the specific dimensions of the MZR 2.0 engine, making them a direct replacement for the factory rods in terms of overall length and big end bore size, though piston pin bore size may vary depending on your pistons.