Nitto Billet Crankshaft
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Nitto Billet Crankshaft - Mitsubishi 4G63 - Lancer Evolution IV–IX (CN9A / CP9A / CT9A)
Nitto EN40B billet crankshafts for the 7-bolt Mitsubishi 4G63T in the Lancer Evolution IV to IX. They are aimed at the top end of drag racing and circuit racing, where crank strength and durability under very high power matter most.
Choose the stroke to set your capacity: 88 mm keeps the factory 2.0L, 94 mm takes the engine to 2.2L and 100 mm to 2.3L. Longer strokes need the matching Nitto stroker pistons and rod length.
EN40B has a higher tensile strength than 4340 billet, which helps the crank cope with more power for longer, and Nitto notes that the stronger material comes without a weight penalty. Each crank is machined from true billet round bar and is fully counterweighted, nitrided and balanced.
Note: Installation by a professional is recommended. Engine internals must be measured and set up by a qualified engine builder.
Features
- EN40B billet round bar, with higher tensile strength than 4340 and no weight penalty
- X-ray and sonic grade tested
- Quenched, heat treated and nitrided
- Fully counterweighted and balanced
- Knife-edged counterweights (where applicable)
- 100% CNC profiled, drilled and tapped
Warranty
Nitto parts are made for racing and off-road use. Inspect every part during assembly and blueprinting, and contact us before fitting if anything measures out of tolerance. Under Nitto's limited warranty a defective part will be repaired or replaced at Nitto's option, and any modification voids the warranty. Full terms: Nitto limited warranty (PDF).
Pairs Well With
- Nitto Forged Stroker Pistons - Mitsubishi 4G63 - Lancer Evolution IV–IX (CN9A / CP9A / CT9A)
- Nitto I-Beam Connecting Rods - Mitsubishi 4G63 - Lancer Evolution IV–IX (CN9A / CP9A / CT9A)
- Nitto V2 I-Beam Connecting Rods - Mitsubishi 4G63 - Lancer Evolution IV–IX (CN9A / CP9A / CT9A)
- Nitto Stroker Kit - Mitsubishi 4G63 - Lancer Evolution IV–IX (CN9A / CP9A / CT9A)
- Nitto Full Gasket Kit - Mitsubishi 4G63 - Lancer Evolution IV–IX (CN9A / CP9A / CT9A)
Shop more: Nitto
Need help choosing parts? Contact our team at sales@chicaneaustralia.com.au.
Vehicle Compatibility
| Make | Model | Chassis | Years | Engine / Notes |
|---|---|---|---|---|
| Mitsubishi | Lancer Evolution IV | CN9A | 1996–1997 | 4G63T (Japanese import) |
| Mitsubishi | Lancer Evolution V / VI | CP9A | 1998–2000 | 4G63T |
| Mitsubishi | Lancer Evolution VII | CT9A | 2001–2003 | 4G63T |
| Mitsubishi | Lancer Evolution VIII | CT9A | 2003–2005 | 4G63T |
| Mitsubishi | Lancer Evolution IX | CT9A | 2005–2007 | 4G63T |
Product
- Brand
- Nitto
- Part number(s)
- NIT-CNK-4G63STD, NIT-CNK-4G6394E, NIT-CNK-4G63S100
Details
- Product
- Billet crankshaft
- Engine
- Mitsubishi 4G63T (7-bolt)
- Material
- EN40B billet steel
- Stroke
- 2.0L: 88 mm; 2.2L: 94 mm; 2.3L: 100 mm
- Treatment
- Quenched, heat treated, nitrided
- Counterweights
- Fully counterweighted, knife-edged where applicable
- Warranty
- Nitto limited warranty (racing use)
- Instructions
- Nitto installation notes (link below)
Contents
1 x Nitto EN40B billet crankshaft

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