CP Pistons SC7473-6 Forged Piston & Ring Set for Toyota 1JZ/2JZ 87mm +1.0mm

Vehicle Fitment

• Toyota 1JZ-GTE (87.0 mm +1.0 mm bore)
• Toyota 2JZ-GTE (87.0 mm +1.0 mm bore)
• Common builds: Supra MKIV, Soarer, Chaser, Aristo, Lexus SC300/GS300 with 2JZ/1JZ engines

Features

• High-strength forged 2618 aluminum construction
• Accumulator grooves to improve ring seal and reduce flutter
• Dual forced pin oilers for enhanced lubrication around wrist pins
• Pick lock grooves for easier pin removal and service
• Deep valve reliefs accommodate high-lift camshafts and oversized valves
• Balanced assembly within ±1 gram for smooth engine operation
• Fully CNC machined for precise tolerances
• Comprehensive piston & ring set for full engine rebuilds

Specifications

• Part Number: SC7473-6
• Bore Size: 87.0 mm (+1.0 mm oversized)
• Stroke: 86 mm (standard for 2JZ/1JZ engines)
• Rod Length: 142 mm
• Compression Height: ~34.0 mm
• Compression Ratio: ~9.0-10.0:1 depending on head and assembly
• Pin Diameter: 22 mm
• Piston Ring Set: CPN-3425 (1.0 mm/1.2 mm/2.8 mm)
• Material: 2618 forged aluminum alloy

Included Components

• 6x Forged pistons (87.0 mm +1.0 mm size)
• 6x Piston ring sets
• 6x Wrist pins
• 6x Pin locks

Product Description

The CP Pistons SC7473-6 forged piston set is engineered for enthusiasts and builders targeting high-performance Toyota 1JZ-GTE and 2JZ-GTE platforms that require increased bore size and strength for boosted or heavily modified engines. Made from premium 2618 forged aluminum, these pistons are designed to withstand elevated combustion pressures and temperatures typical of turbocharged engines while maintaining durability and consistency in demanding street or track conditions.

Each set includes fully CNC-machined pistons with accumulator grooves, dual forced pin oilers, and pick lock grooves - features that promote better ring seal, lubrication, and serviceability. Balanced within ±1 gram, the SC7473-6 pistons help reduce vibration and improve engine smoothness. Complete with piston rings, wrist pins, and pin locks, this set provides a comprehensive solution for engine builders performing a full rebuild or upgrading internals for higher power output. Always verify bore and block preparation requirements with your machine shop before installation.