MRX Performance Crankshaft Built for serious horsepower builds, the MRX Performance Crankshaft replaces the stock unit to deliver rock-solid durability, improved balance, and confidence under extreme load. Key Features & Benefits Billet / Forged Construction — Manufactured from premium material for maximum strength under high stress Full Counterweight Design — Superior balancing reduces vibration, extends bearing life, and improves engine smoothness Standard Stroke (3000 cc) Replacement — Fits directly without needing to modify stroke or compression Engineered for High Power Builds — Ideal upgrade for builds that push beyond stock limits Premium Component to Match Upgraded Internals — Combines well with forged pistons, reinforced rods, and main cap girdles for a true bottom-end upgrade 📋 Fitment / Compatibility This crankshaft is suited for 4JJ1 diesel engines, specifically: Holden Rodeo RA7 (2007–2008) Holden Colorado RC (2008–2012) Isuzu D-Max (2008–2020)(All with 4JJ1 engine)
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