The Cometic 97mm bore top end gasket kit is engineered to restore and enhance the performance of your Yamaha WR450F or YZ450F (2018-2020). This comprehensive kit provides all essential components for a complete top end rebuild, ensuring optimal sealing and durability for demanding 4-stroke applications.
Description
The Cometic 97mm bore top end gasket kit is specifically designed for high-performance 4-stroke engines like the Yamaha WR 450 F and YZ 450 F from 2018-2020. This kit features Cometic’s renowned Multi-Layer Steel (MLS) head gaskets, which are critical for maintaining an even torque load across the sealing surface. This innovative design significantly reduces bore distortion, leading to a better piston ring seal and ultimately, more power output from your engine.
Crafted to excel in today’s highest-output naturally aspirated and boosted machines, these MLS head gaskets incorporate embossed outer layers coated with a durable Viton rubber. This construction ensures exceptional resilience against the high cylinder pressures and temperatures common in modern high-horsepower engines. The kit also includes correct base gaskets, cylinder O-rings, and other top end specific seals, all made with Extreme Sealing Technology (EST) using proprietary rubber-coated embossed stainless steel for reliable, leak-free performance. By efficiently drawing heat away from the combustion ring, these gaskets prevent hot spots and premature failure, providing peace of mind and consistent power.
Features & Highlights
- Optimized Power & Sealing: Features Multi-Layer Steel (MLS) head gaskets that promote even torque distribution, minimizing bore distortion for a superior piston ring seal and increased power output.
- High-Performance 4-Stroke Design: Engineered specifically for high-output 4-stroke engines, with materials built to withstand extreme cylinder pressures and temperatures.
- Advanced Sealing Technology: Utilizes embossed stainless steel gaskets with a Viton rubber coating on head gaskets and a proprietary rubber material on EST base and rocker gaskets, ensuring maximum durability and a leak-free seal.
- Superior Heat Management: Specially designed head gasket material effectively dissipates heat from the combustion ring, eliminating hot spots and significantly extending gasket life.
- Complete Top End Kit: Includes all necessary base and head gaskets, cylinder O-rings, and other specific seals required for a thorough top end overhaul.
- Proudly Made in the USA: Manufactured with precision and quality craftsmanship in the United States, ensuring reliability and performance you can trust.
Technical Specifications
- Type: Top End
- Model: Hi-Performance
- Units: Kit
- Material: MLS (Multi-layer Steel)
- Bore Size: 97.00mm (3.818″)
- Thickness: 0.69mm (0.027″)
- Engine Type: 4-Stroke
- EAN: 0191070396534
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