Wiseco W6365 MLS Head Gasket 67mm Honda CBR600RR

The Wiseco W6365 is a Multi-Layer Steel (MLS) head gasket with a 0.027-inch compressed thickness and a 67mm bore diameter, designed for 2003–2006 Honda CBR600RR street bikes. It is engineered to deliver a superior, leak-free seal during engine rebuilds or performance upgrades.

MLS Construction & Performance:

• Multi-layer steel design provides the flexibility and resilience to accommodate engine movement and thermal expansion without losing the seal
• High-pressure steel-laminate construction withstands intense shear forces generated between engine components
• Internal embossments expand with heat, creating a progressively tighter seal under high combustion pressures and temperatures
• 0.027-inch thickness maintains proper compression ratio during standard or overbore rebuilds
• 67mm bore diameter matches OEM and compatible Wiseco overbore piston specifications
• Engineered to OEM+ quality standards for reliable sealing in powersports applications
• Precision-fit design reduces the risk of leaks and maximizes engine efficiency

The Wiseco W6365 head gasket is an ideal choice for engine rebuilds, top-end refreshes, or performance upgrades on the 2003–2006 Honda CBR600RR. It pairs seamlessly with Wiseco forged pistons and other Wiseco top-end components for a complete, high-confidence rebuild.