BC Brian Crower Crankshaft for 4B11T Mitsubishi Evo X (BC5139)
$2,614.50
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$2,614.50
Product Overview
Designed with fully profiled counterweights and large radius journals, this crankshaft minimizes windage and oil resistance, allowing for higher RPMs and improved engine efficiency. Its advanced oil delivery system—featuring gun-drilled, tear-dropped, and cross-drilled passages—ensures consistent lubrication across all moving components.
Key Features
- Made from 4340 billet steel, aerospace-grade material for high-stress performance
- CNC machined to .0001" tolerances on Mazak Integrex 300-IV machines
- Fully profiled counterweights reduce windage and oil resistance for improved RPM potential
- Large radius journals enhance crankshaft rigidity for high horsepower and high rpm use
- Micro-polished oil holes achieve mirror finish for superior bearing lubricity
- Undergoes stress relief, shot peening, magna flux inspection, and nitriding heat treatment
Specifications
| Part Number | BC5139 |
|---|---|
| Crankshaft Stroke | 98mm |
| Rod Journal | 52mm |
Applications
- 2008-2015 Mitsubishi Lancer Evolution X (4B11T CZ4A Evo X GSR and MR models)
What's Included
- 1 x 98mm Stroke Crankshaft (Part Number: BC5139)