Tomei Forged Piston Kit For Mitsubishi 4B11 2.3L Stroker - P.Bore 87.0mm

This piston kit is for Tomei 2.3L Stroker Kit for Mitsubishi EVO 10 4B11
Note: Tomei crankshaft and connecting rods are required to achieve 2.3L.

Piston spec:

Bore: 87.00mm (OEM +1.0mm)
Pin Dia.: 23.0mm
Pin Length: 62.0mm
Circlip Inner Dia.: 23.0mm
Valve Recess: With
Comp. Height: 27.40mm (Stock -6.0mm)
Piston Vol.: -12.5cc
Piston Weight: 316.5g
Pin Weight: 133.0g
Total Weight: 449.5g
Top Ring: 1.20 x 3.05mm
Second Ring: 1.20 x 3.90mm
Oil Ring: 2.50 x 2.95mm
Material: A4032

It is the core part of the engine that converts the power of combustion gas into power to move the car. Pistons in tuned engine are required to be strong enough to withstand high combustion pressure.

Features:

1. Lightweight and high rigidity forged piston - High-strength forging manufacturing method is adopted rather than the mainstream casting method used for commercial vehicles. Taking advantage of high temperature strength and high strength, weight reduction is achieved by making the walls thinner.
2. Forging material exclusive for each mode - Excess material is minimized by using exclusive forged material and prevents excessive machining that results to reduction in strength.
3. 3D profile - In order to achieve smooth piston movement with optimal clearance, it has an oval barrel shape with coefficient of thermal expansion calculated.
4. Compatible with standard and 1mm oversized valve - The piston recess is shaped to also support the use of 1mm oversized valves.
5. Designed for thin piston rings - Friction loss is reduced by thinning the piston ring.
6. Pins/Clips/Rings Included - Comes with pins, clips, and rings that are optimally designed for this model.

We usually ship all orders within 1 day unless there is an issue with the order. In that case, we will contact you to find the best solution.