Wiseco 85.00 mm Standard Bore 11:1 Top End Kit – Honda TRX400EX / TRX400X / XR400R

🛠️ Description
Boost your Honda’s performance with the Wiseco 85.00 mm Standard Bore Top End Kit (11:1 compression). Designed for riders who want more snap and throttle response without sacrificing durability, this complete kit includes everything needed for a top end rebuild. With forged piston technology trusted by professional race teams and a premium gasket kit, this setup ensures strength, reliability, and long-lasting power.

✅ What’s Included

• Forged 85.00 mm standard bore piston (11:1 compression)

• High-performance piston ring set

• Wrist pin & circlips

• Complete top-end gasket kit (head, base, valve cover, and seals)

📦 Fitment
Honda TRX400EX Sportrax

• 1999–2009

Honda TRX400X

• 2012–2014

Honda XR400R

• 1996–2004

🛡️ Warranty Info
Wiseco piston kits are backed by a limited manufacturer’s warranty against defects in materials and workmanship. Warranty does not cover improper installation, tuning errors, or race-related damage.

🔑 Key Features

• 11:1 compression ratio for added horsepower and torque

• Standard bore (85.00 mm) forged piston for OEM fitment

• Race-proven designs trusted in motocross, GNCC, and Supercross

• Aerospace alloy forgings for superior strength-to-weight ratio

• Complete top-end gasket kit for a seamless rebuild

• High-performance rings and alloy wrist pin included