JE Pistons 247612 High-Performance Forged Piston Kit 89mm Bore 10.8:1 Compression

The JE Pistons 247612 is a premium forged piston kit engineered for high-performance Honda XR400 and TRX400 applications. This big bore kit features an 89.00mm bore size (4.00mm oversize) with a 10.8:1 compression ratio, delivering increased power and performance for demanding racing and performance applications.

Key Features:

• Forged in the USA from 2618-T6 high-tensile aluminum alloy for exceptional strength and durability in extreme conditions
• Proprietary Forged Side Relief (FSR) design minimizes friction and power loss while reducing weight
• 89.00mm bore size provides a 4.00mm overbore for increased displacement
• 10.8:1 compression ratio optimized for high-performance applications
• Advanced CNC machining with Ultra Crown and Ultra Groove technologies ensures precision tolerances
• Complete kit includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings
• Designed specifically for Honda XR400R and TRX400EX/TRX400X engines
• Backed by over 75 years of JE Pistons racing experience and engineering expertise

JE Pistons applies Finite Element Analysis (F.E.A.) to predict thermal and structural stresses before production, ensuring each piston delivers the optimal combination of performance and durability. Engineered, forged, and machined entirely in the USA, this piston kit represents the pinnacle of forged racing piston technology for ATV and motorcycle applications.