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Not in stock, available to order
Genuine HKS piston kit. Manufacturer part number - 21003-AM004.
FITMENT AND SPECIFICATIONS
| Product | Engine | Capacity (ml) | Type | Boring・Honing modification | Full flow modification | Code No. | Remarks |
|---|---|---|---|---|---|---|---|
| Forged Piston Kit | 4B11 | 2139 | Φ86.5 - Φ23 | Required | Not required | 21003-AM004 | Forged Short Height Pistons + Rings + Pin |
Match the engine, chassis, transmission and all application restrictions before ordering.
PURCHASED PARTS PACKAGE
One HKS piston kit under part number 21003-AM004. See the application table for the supplied specification and separately required parts. This is a piston kit, not a complete stroker kit.
INSTALLATION AND OPTIONS
Professional installation and the manufacturer application instructions are required. The image is a manufacturer product-family illustration. The supplied components and dimensions follow the part number and table above.

HKS 86.5mm Piston Kit for Mitsubishi Evo X 4B11 2.2L Stroker - 21003-AM004

