Wiseco K594M85AP Forged Pistons for 1994-2001 Acura Integra 1.8L DOHC VTEC

Vehicle Fitment

• 1994-2001 Acura Integra GS-R (1.8L DOHC VTEC I4, B18C1, FWD)
• 1997-2001 Acura Integra Type R (1.8L DOHC VTEC I4, B18C5, FWD)

Fitment Notes

• Designed exclusively for Honda/Acura B18C-series DOHC VTEC engines.
• Requires 85.00 mm overbore machining.
• Not compatible with non-VTEC B18A/B engines.
• Professional engine machining and assembly required.

Features

• Forged from high-strength 2618 aluminum alloy for maximum durability.
• Engineered for high-RPM naturally aspirated and competition builds.
• ArmorGlide skirt coating reduces friction and cylinder wall wear.
• Precision-machined ring lands improve ring seal and longevity.
• Dish-style piston crown optimized for performance compression ratios.
• Designed to handle elevated cylinder pressures and sustained RPM.
• Balanced piston design for smooth operation in performance engines.
• Direct-fit geometry for Honda B18C-series engine architecture.

Specifications

• Part Number: K594M85AP
• Engine Platform: Honda/Acura B18C DOHC VTEC
• Bore Diameter: 85.00 mm
• Material: 2618 forged aluminum
• Piston Crown: Dish
• Wrist Pin Diameter: 22 mm
• Application: Performance engine rebuild

Included Components

• 4x Forged Pistons
• 4x Wrist Pins
• 4x Piston Ring Sets

Product Description

The Wiseco K594M85AP Forged Pistons are engineered specifically for Honda/Acura B18C-series DOHC VTEC engines found in Integra GS-R and Type R models. Manufactured from premium 2618 forged aluminum, these pistons deliver superior strength and resistance to fatigue, making them ideal for high-RPM naturally aspirated and motorsport applications.

Featuring an 85.00 mm bore and a performance-oriented dish crown, this piston set supports increased displacement while maintaining reliable compression characteristics. ArmorGlide skirt coating reduces friction and wear, improving longevity under demanding use. This complete kit includes pistons, wrist pins, and rings and is intended for professionally machined and assembled engine builds where precision and durability are critical.