JE Pistons 379443 Ultra Series 84mm Piston Kit 1441cc Hayabusa

The JE Pistons 379443 Ultra Series piston kit is engineered for high-performance Suzuki Hayabusa applications, featuring an 84mm bore size (+3mm overbore) that increases displacement to 1441cc with a 13.5:1 compression ratio. This complete forged piston kit is designed for both naturally aspirated and forced induction applications demanding maximum strength and reliability.

Advanced Features:

• Aligned Grain Flow Technology: Proprietary in-house forging directs aluminum grain flow around critical stress areas for increased piston strength
• Lateral Gas Ports: Channel combustion gases behind the top ring groove to maintain consistent ring seal against the cylinder wall, critical for boosted applications
• Ultra-Thick Ring Lands: Maintain ring stability in forced induction and high-horsepower engines for consistent ring seal and power delivery
• Thermal Barrier Crown Coating: Ceramic coating on piston crown reduces heat transfer into the piston material, decreasing fatigue and improving longevity
• Tuff Skirt Coating: Proprietary moly-based dry film skirt coating applied in-house reduces operating friction and improves wear resistance
• Upgraded 9310 Wrist Pins: Stronger, thicker tool steel wrist pins designed to withstand the additional loads of forced induction engines

Complete Kit Includes: All four pistons, piston rings, wrist pins, and wire locks under one part number. Note: This is an overbore application requiring cylinder boring and replating services.