JE Piston Honda Sportrax TRX 400 EX 400 X XR 400 88mm 13:1 JE Piston Kit 177239

JE Piston Kit for Honda 400EX / 400X / XR400R – 88mm Big Bore (SKU: 177239)

Upgrade your Honda 400EX, 400X, or XR400R with this high-quality JE forged piston kit. Designed for all years and models, this 88mm big bore kit increases displacement and compression for noticeable gains in power, throttle response, and overall engine performance.

Key Features:

• Fitment: Honda Sportrax TRX400EX, TRX400X, and XR400R – all years and models
• Bore Size: 88mm Big Bore
• Compression Ratio: 13.0:1
• Cylinder Count: 1
• Material: Forged from high-strength 2618 aluminum alloy
• Design: Proprietary Forged Side Relief (FSR) design reduces friction, weight, and power loss
• Includes: Piston, wrist pin, locks, and JE Pro Seal premium piston rings
• Made in the USA: Engineered, forged, and machined for top-tier performance and reliability

Description:

JE Pistons are trusted by racers and engine builders around the world for their strength, precision, and proven performance. This kit is designed specifically for Honda 400cc engines to handle the demands of motocross, trail riding, and off-road competition.

The forged construction offers superior durability compared to cast pistons, while the advanced FSR design ensures smoother operation and reduced wear.

Whether you’re rebuilding your engine or looking for extra horsepower, this JE 88mm Big Bore Kit delivers the quality and performance you expect from one of the most respected names in engine components.