Nitto Forged Pistons
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Nitto Forged Pistons - Mitsubishi 4B11T - Lancer Evolution X (CZ4A) / Lancer Ralliart (CJ)
These Nitto forged pistons are a stronger replacement for the factory pistons in the 4B11T, the 2.0L turbo engine in the Lancer Evolution X and Lancer Ralliart. They keep the standard stroke and suit boosted street, circuit and drag builds.
Choose a bore of 86.5 mm (+0.020") or 87.0 mm (+0.040") to suit your block machining. Both use a 0.905" pin and a dished crown, -5 cc on the 86.5 mm piston and -6 cc on the 87.0 mm piston.
Nitto sets the specification and CP Carrillo in California forges and machines each piston from low-silicon 2618 aluminium using its Turbo HD forging. Every set includes a PVD-coated ring set that seals the bore well under boost while reducing friction against the cylinder wall, along with CP's 9310 wrist pins, which are hardness tested, case hardened and cryogenically treated. Forced double pin oiling, anti-detonation grooves and accumulator grooves are standard.
Note: Installation by a professional is recommended. Engine internals must be measured and set up by a qualified engine builder.
Features
- Designed by Nitto and manufactured by CP Carrillo
- Low-silicon 2618 aluminium, Turbo HD forging
- PVD-coated ring set for strong bore sealing under boost with less friction
- 9310 wrist pins: Rockwell tested, case hardened and cryogenically treated
- Forced double pin oiling to keep the wrist pin lubricated
- Anti-detonation and accumulator grooves to protect the top ring and improve ring seal
Kit Contents
- 4 x Nitto forged pistons (one set)
- PVD-coated ring set
- 9310 wrist pins
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 H-Beam Connecting Rods - Mitsubishi 4B11T - Lancer Evolution X (CZ4A) / Lancer Ralliart (CJ)
- Nitto I-Beam Connecting Rods - Mitsubishi 4B11T - Lancer Evolution X (CZ4A) / Lancer Ralliart (CJ)
- Nitto Billet Stroker Crankshaft - Mitsubishi 4B11T - Lancer Evolution X (CZ4A) / Lancer Ralliart (CJ)
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 X | CZ4A | 2008–2016 | 4B11T |
| Mitsubishi | Lancer Ralliart | CJ | 2008–2015 | 4B11T |
Technical Specifications
| Spec | Value |
|---|---|
| Brand | Nitto |
| Product | Forged pistons, standard stroke |
| Engine | Mitsubishi 4B11T (2.0L) |
| Material | 2618 aluminium |
| Forging | Turbo HD |
| Ring type | PVD coated |
| Pin diameter | 0.905" |
| Pin length | 2.500" |
| Pin wall | 0.190" |
| Pin material | 9310 |
| Bore | 86.5 mm (+0.020"); 87.0 mm (+0.040") |
| Dome / dish | 86.5 mm: -5 cc; 87.0 mm: -6 cc |
| Warranty | Nitto limited warranty (racing use) |
| Instructions | Nitto installation notes (link below) |
| Part number(s) | NIT-CP-4B1120, NIT-CP-4B1140 |
Contents
1 x set of 4 Nitto forged pistons with PVD ring set and 9310 wrist pins

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