Wiseco Top End Bearing for Honda, Suzuki and Yamaha (B1004)

The WISECO B1004 Top End Bearing is designed for dependable performance in compatible Honda, Suzuki and Yamaha engines. Forged from a high-silicone aluminum alloy, this top end bearing provides a strong, durable construction suited to demanding engine applications. Its precision-focused design supports reliable operation where consistent fit and performance are essential.
High-quality bearings are manufactured to exacting standards for smooth operation and long service life. The B1004 bearing is case-hardened to improve durability and resistance to wear, helping it maintain dependable performance during high engine speeds and repeated use. This construction makes it a practical replacement component for riders, technicians and engine builders seeking trusted top end reliability.
Install the WISECO B1004 Top End Bearing as a replacement in compatible Honda, Suzuki and Yamaha applications. Designed for use with performance-oriented engine assemblies, it helps support efficient piston movement and dependable operation throughout the engine’s operating range. Always verify application compatibility and manufacturer installation requirements before use.

Features:

• Forged high-silicone aluminum alloy construction for strength and dependability

• Case-hardened bearing surfaces for improved wear resistance and extended service life

• Manufactured to high-quality standards for smooth operation at high engine speeds

• Designed for compatible Honda, Suzuki and Yamaha engine applications

• WISECO part number B1004

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