The Cometic C7507 Top End Gasket Kit is designed for 1999–2001 Yamaha YZ250 models. This kit provides the essential sealing components needed for top-end service while helping restore reliable engine performance and compression. It is suited for powersports applications where dependable fitment, sealing strength, and torque retention are important.
Cometic manufactures the C7507 gasket kit using carefully selected materials engineered for demanding engine environments. The included graphite gasket features a steel core laminated on both sides with flexible graphite, providing a durable sealing surface and improved conformity during assembly. Fiber gaskets are designed to support maximum sealing performance, flexibility, and torque retention, while the O-ring gaskets meet or exceed original equipment manufacturer specifications.
Installation should follow the Yamaha service manual, including proper surface preparation, torque specifications, and replacement procedures. The Cometic C7507 Top End Gasket Kit is a direct-fit replacement application for the listed Yamaha YZ250 models and is intended to help support consistent compression, dependable sealing, and improved low-end power after proper installation.
Features:
- Fitment: Designed for 1999–2001 Yamaha YZ250 models
- Performance: Raises compression to support improved low-end power
- Graphite construction: Steel-core gasket laminated on both sides with flexible graphite
- Fiber gasket design: Provides maximum sealing, flexibility, and torque retention
- O-ring sealing: Meets or exceeds original equipment manufacturer specifications
- Brand: Cometic
- Manufacturer part number: C7507
- Vendor part number: 68-7507
Fitment:
1999 Yamaha YZ250
2000 Yamaha YZ250
2001 Yamaha YZ250