Wiseco W5358 0.010 Copper Base Gasket Kawasaki 1230-1260

The Wiseco W5358 is a precision-cut 0.010-inch (0.25mm) copper base gasket engineered for Kawasaki engines in the 1230–1260cc displacement range with an 83.00mm bore. Manufactured in the USA, this individual base gasket delivers a reliable, leak-free cylinder-to-case seal during top-end rebuilds or overbore projects.

Key Features:

• Material: Premium copper construction for superior heat resistance and sealing durability
• Thickness: 0.010 in (0.25mm) — ideal for fine-tuning compression ratio during rebuilds
• Bore Size: 83.00mm — designed for Kawasaki 1230–1260cc applications
• Made in the USA by Wiseco, a trusted name in powersports engine components
• Sourced and quality-controlled in-house to meet or exceed OEM sealing specifications
• Sold individually

Wiseco copper base gaskets are the preferred choice for riders and builders who demand a proper seal the first time. Copper's natural malleability allows it to conform tightly to mating surfaces, compensating for minor imperfections and providing a long-lasting compression seal. The W5358 is an ideal companion to Wiseco pistons and crankshafts, but is equally suited for use with OEM or other aftermarket components in compatible Kawasaki engines.