Top End Piston Bearing

WISECO Top End Piston Bearing (WB1008) is a dependable solution for riders who want a smooth-running engine and confidence at high RPM. Designed for top-end piston applications, this bearing helps reduce friction and wear in a critical engine area—especially important during a top-end refresh or rebuild. If you’re chasing reliable performance and longer service intervals, a quality top-end bearing is a small part that makes a big difference.

By replacing worn bearings during service, you help protect the piston/wrist-pin interface and maintain consistent operation under load—whether you ride motocross, enduro, or hard trail conditions.

Key features:

• ✅ High-quality manufacturing: built to high standards for dependable fit and function
• ✅ Case-hardened construction: engineered for maximum life and durability
• ✅ High-RPM smoothness: designed for smooth operation at elevated engine speeds

Benefits of use:

• 🔹 Improved reliability: helps reduce top-end wear during demanding riding
• 🔹 Smoother operation: supports consistent performance and engine feel
• 🔹 Smart rebuild practice: ideal to replace alongside piston service to avoid premature failures

Technical specifications:

• 📌 Brand: WISECO
• 📌 Vendor part number: WB1008
• 📌 Application: Piston (Top End)
• 📌 Inside diameter: 16 mm
• 📌 Outside diameter: 21 mm
• 📌 Length: 19.5 mm
• 📌 Units: Each

Why choose this product?

• ⭐ Trusted WISECO quality for critical engine components
• ⭐ Case-hardened design aimed at long service life
• ⭐ Great choice for a thorough, professional top-end rebuild