JE Pistons 361305 Piston Set, 2618, Flat Top, 3.386 Bore, 1.253 CD, 0.866 Pin, Set of 4.

The JE Pistons 361305 Ultra Series forged piston set is engineered for sport compact and Euro performance applications demanding the highest levels of strength and reliability. Forged from low-silicon 2618 alloy, these pistons are purpose-built for high-boost, high-compression, and nitrous-assisted builds where lesser pistons would fail.

Key Features:

• 2618 Forged Alloy Construction — Premium low-silicon 2618 aluminum alloy provides exceptional strength under extreme heat and pressure
• Flat Top Crown Design — 3.386 in. (86mm) bore diameter with a flat top crown profile for optimized combustion efficiency
• Thermal Barrier Ceramic Crown Coating — Reduces heat transfer into the piston for improved thermal management and detonation resistance
• Lateral Gas Ports — Improve ring seal by venting combustion pressure directly behind the top ring, reducing blow-by
• Perfect Skirt Coating — Reduces friction and wear between the piston skirt and cylinder wall for extended service life
• Accumulator Groove — Helps manage combustion gas pressure to improve ring seal and reduce blow-by
• Thick-Wall 0.866 in. Wrist Pins — Upgraded 9310 steel pins with double pin oiling for superior strength and lubrication
• 1.253 in. Compression Distance (CD) — Precision-machined for proper deck height and compression ratio targeting
• Gas-Nitrided Carbon Steel Rings Included — Premium ring set included for optimized sealing and long-term durability
• CNC-Machined to Tight Tolerances — All critical surfaces machined in a dedicated manufacturing cell for consistent quality

This set includes 4 complete pistons with rings and wrist pins. JE Pistons' Ultra Series represents decades of motorsport engineering expertise, making this set an ideal choice for performance engine builders targeting high-output street, track, or competition applications.