Tomei 2.2L/2.3L Forged Pistons for 4G63 Mitsubishi Evo 4-9
At the core of the engine, pistons convert combustion gas into power. Choose Tomei or CP pistons with 85.5mm or 86mm bore for the 4G63 Evo 4-9 engine. Exclusive forged material is lightweight, preventing excessive machining and strength reduction. The 3D profile ensures smooth movement with optimal clearance and an oval barrel shape for thermal expansion.
Vehicle Fitment:
1992-2006 Mitsubishi Evolution IV-IX
(Evo 4/5/6/7/8/9 with 4G63 engine)
| 2.2L/2.3L 4G63 | 86mm Tomei Pistons (TA202A-MT01A) |
86mm CP Pistons (TA202A-MT01AP) |
85.50mm Tomei Pistons (TA202A-MT01B) |
| BORE (mm): | 86.00 (OEM +1.0) | 86.00 (OEM +1.0) | 85.50 (OEM +0.5) |
| Pin Diameter (mm): | 22 | 22 | 22 |
| Pin Length (mm): | 60 | 60 | 60 |
| Circlip Inner Diameter (mm): | 22 | 22 | 22 |
| Compression Height (mm): | 31.65 (STOCK -3.35) | 31.65 (STOCK -3.35) | 31.65 (STOCK -3.35) |
| Piston Volume (cc): | -19.5 | -19.6 | -19.5 |
| Piston Weight (g): | 328.7 | 335.1 | 322.4 |
| Total Weight (g): | 450.2 | 460.1 | 443.9 |
| Top Ring (mm）: | 1.20 x 3.05 | 1.20 x 2.95 | 1.20 x 3.05 |
| Second Ring (mm）: | 1.20 x 3.70 | 1.20 x 2.95 | 1.20 x 3.70 |
| Oil Ring (mm）: | 2.50 x 2.85 | 2.00 x 2.60 | 2.50 x 2.85 |
| Piston Material: | A4032 | A2618 | A4032 |
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