Wiseco B1037 Top End Wrist Pin Bearing 18mm x 22mm x 19.65mm

The Wiseco B1037 is a precision-engineered top end wrist pin bearing designed for high-performance two-stroke powersports engines. Measuring 18mm (ID) x 22mm (OD) x 19.65mm (length), this needle cage bearing connects the piston to the connecting rod and is a critical component when performing a top end rebuild.

Wiseco top end bearings are built to the same exacting standards as their world-renowned forged pistons, making them the ideal replacement choice whenever a top end is serviced.

Key Features:

• Precision dimensions: 18mm inner diameter × 22mm outer diameter × 19.65mm length
• Case-hardened construction for extended service life under demanding conditions
• Engineered for high RPM — provides smooth, reliable operation at peak engine speeds
• Needle roller cage design for optimal load distribution at the wrist pin
• Direct OEM replacement quality at an aftermarket value
• UPC: 193564104595

Replacing the top end bearing during every top end service is essential preventive maintenance. A worn or failed wrist pin bearing can cause catastrophic engine damage, making the Wiseco B1037 an inexpensive but critical part of any thorough rebuild.