Wiseco K675M8625AP Mitsubishi Forged Piston Kit Bore Compression - 4G63 7-Bolt 86.25mm 9.5 1

Manufacturer

Part Number

K675M8625AP

7 reviews

Sale Price

$863.99

Estimated ship date Wednesday, November 25

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Wiseco K675M8625AP Mitsubishi Forged Piston Kit Bore Compression - 4G63 7-Bolt 86.25mm 9.5 1 — image 1

Product Details

The Wiseco K675M8625AP is a Professional Series forged piston kit engineered for the Mitsubishi 4G63 7-bolt turbocharged engine. Targeting a stock-displacement build at a 9.5:1 compression ratio with a -4cc flat-top crown, this kit is precision-built for high-output forced induction applications where reliability and power are equally critical.

Featuring an 86.25 mm bore (approximately +1.25 mm over stock) and a 28.70 mm (1.130 in.) compression height, these pistons are designed to work with the 4G63's 88 mm stroke and 150 mm connecting rods. The 0.866 in. (22 mm) pin diameter accommodates the included heavy-duty tool steel wrist pins.

Key Features:

Professional Series forged construction — engineered for heavy to severe duty race builds
2618 aluminum alloy — high tensile strength with excellent performance at elevated temperatures
ArmorGlide® skirt coating — reduces friction, resists seizure, and promotes quieter operation
Armor Plating crown treatment — raises surface hardness, prevents ring micro-welding, reduces carbon buildup, and resists detonation damage
Fully machined crown features — specially designed valve pockets and optimized squish/quench geometry for detonation resistance
Precision ring grooves — gas-nitrided top ring and Napier second ring for superior oil control
Textured piston face — improves combustion characteristics and flame propagation
Complete kit — includes pistons, rings, pins, and clips

Engineered and manufactured in the USA at Wiseco's Mentor, Ohio facility, the K675M8625AP is a proven choice for DSM and Evo platform builders looking for a street-to-track piston that can handle boost, high RPM, and demanding duty cycles without compromise.

Products specifications

Piston Quantity

Wrist Pin Style

Floating

Make

Mitsubishi

Piston Material

2618

Prop 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Bore Diameter

86.25

Industry

Automotive

Product Market

Sport Compact

Engine Type

ICE

Engine

4G63

Oil Ring Thickness

2.8

Wrist Pin Material

5115

Product Series

Professional

Product Type

Engine Piston Set

Wrist Pin Outer Diameter

0.866

Forging Type

Strutted

Out of Stock Message

Estimated Shipped Date 3-4 Weeks

Second Compression Ring Thickness

1.2

Top Compression Ring Thickness

1.0

EBAY Category ID

33623

Engine - Web

4G63

Make - Web

Mitsubishi

Ring Set Included

Yes

Skirt Coating

Yes

Wrist Pin Included

Yes

Compression Height

28.70

Piston Volume

-4.00

Rod Length

150.00

Stroke

88.00

Title

Wiseco - Mitsubishi, 4G63, 86.25 mm Bore, Piston Set of 4

Title - Web

Professional Mitsubishi 4G63 Piston Set of 4 - 86.25 mm Bore - 28.70 mm CH, -4.00 CC

Product was available and delivered within a couple of days. All good.

Warren S

N/A

Jennifer B

These guys always have the best prices and customer support! Thanks TH Motorsport’s

Doug J

Easy to find merchandise that no one else has

Michael N

Best price I found for what I was looking for.

Alejandro

Great experience

andrew p

Very easy to find what we were looking for. Thank you!

Cynthia A

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