Connecting Rods

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The best connecting rods for a built engine are H-beam rods matched to your engine platform and power goal — Eagle H-beam rods for Subaru EJ-series and Nissan KA24/SR20 builds, and Manley H-beam rods for EJ-series, Miata, and Toyota 3S-GTE engines. H-beam rods are the standard choice for turbocharged street builds because their shape resists the bending loads that snap stock rods as cylinder pressures rise. Stock rods are fine at stock power, but once boost and RPM climb past factory limits, forged-style H-beam rods with strong rod bolts become cheap insurance for the bottom end. Connecting rods link the pistons to the crankshaft, and every power stroke tries to bend or stretch them. When shopping, match the rod to the engine first: big-end and small-end diameters, center-to-center length, and pin fitment are all platform-specific, so check your exact year and model before ordering. H-beam designs dominate street turbo builds because they put material where bending stress is highest while keeping weight reasonable. Look for rods that include quality rod bolts and come balanced in matched sets, since bottom-end longevity depends on every cylinder carrying the same load. Eagle is a value-oriented performance brand whose H-beam rods are a go-to for budget-conscious bottom-end builds, and this collection shows why: Eagle covers the 2002-2014 WRX and 2004-2019 STI EJ engines alongside Nissan 240SX KA24 and SR20 applications, making it one of the widest single-brand rod catalogs for import builds. Manley Performance is a dedicated internal-engine-parts maker with a long reputation in drag and road racing, and its H-beam line here spans Subaru EJ18/20/22 engines, the 1990-2005 Miata, and the 1986-1999 Celica and 1990-1999 MR2 with the turbocharged 3S-GTE. Both brands build rods aimed at forced-induction duty, where elevated cylinder pressure punishes the stock bottom end first. For related parts, browse Engine Build Components , Engine Builds , Forced Induction Parts , the