CP Pistons SC7310PVD-6 86.5mm 8.5:1 Skyline RB26 R32-34

Vehicle Fitment

• 1989-2002 Nissan Skyline GT-R (R32/R33/R34, RB26DETT)
• Nissan Stagea 260RS (RB26DETT)

Fitment Notes

• +0.5mm over-bore (86.5mm vs. stock 86.0mm) - verify your block has been bored to this size, or plan to have it bored, before ordering. Sold as a set of 6.

Features

• Lower 8.5:1 compression ratio purpose-built for high-boost, turbocharged RB26 applications
• Forged in the USA from premium 2618 aluminum alloy for strength under extreme cylinder pressure
• CNC-machined to exacting tolerances, balanced to within ±1 gram for smooth crank rotation and reduced vibration
• Accumulator grooves reduce ring flutter and improve sealing under boost
• Dual forced pin oilers provide extra lubrication to the wrist pin under sustained high load
• Upgraded PVD-coated ring set for reduced friction and improved wear resistance versus standard rings
• Suitable for turbocharged, supercharged, or nitrous-assisted applications

Specifications

• Bore: 3.406" (86.50mm), +0.5mm over stock
• Compression ratio: 8.5:1
• Stroke: 73.70mm
• Rod length: 121.5mm
• Compression height: 1.193"
• Dome: +0.5cc
• Ring set: Upgraded PVD-coated
• Set contents: Set of 6

Included Components

• 6x Forged dome pistons (2618 alloy)
• 6x Piston pins
• PVD-coated piston ring set

Product Description

The CP Pistons SC7310PVD-6 is a purpose-built piston set for the Nissan RB26DETT, engineered around a lower 8.5:1 compression ratio ideal for serious, high-boost forced-induction builds. Forged in the USA from premium 2618 aluminum alloy and CNC-machined to exacting tolerances, each piston is balanced to within ±1 gram for smooth, vibration-free crank rotation even under sustained high-RPM abuse.

Accumulator grooves and dual forced pin oilers address the specific demands of a hard-driven turbocharged RB26 - better ring sealing under boost and consistent wrist pin lubrication where stock pistons fall short. The upgraded PVD-coated ring set further reduces friction and improves long-term wear resistance over CP's standard ring offering, rounding out a set built to hold up reliably in high-horsepower Skyline GT-R and Stagea 260RS builds.