The Cometic C3745 Top End Gasket Kit is designed for Sherco two-stroke racing motorcycles, including 2018–2021 250 SE-R Racing and 2018–2021 300 SE-R Racing models. This kit supports reliable top-end service while helping restore proper sealing between engine components. It is an appropriate choice for engine rebuilds, cylinder service, and routine maintenance where dependable gasket performance is required.
Cometic manufactures this kit with gasket materials selected for durability, flexibility, torque retention, and precise sealing. The graphite gasket construction features a steel core laminated on both sides with flexible graphite, providing strength and conformity during installation. Fiber gaskets are engineered for maximum seal performance, flexibility, and torque retention, while the O-ring gaskets meet or exceed OEM specifications for dependable fit and sealing.
Manufacturer part number C3745 and vendor part number C3745 identify this Cometic Top End Kit. Verify the motorcycle model, model year, and engine configuration before installation to ensure proper fitment. This kit fits 2018, 2019, 2020, and 2021 Sherco 250 SE-R Racing and 300 SE-R Racing motorcycles. Follow the motorcycle manufacturer’s service procedures and recommended torque specifications during installation.
Features:
- Raises compression for improved low-end power
- Graphite gaskets feature a steel core laminated on both sides with flexible graphite
- Fiber gaskets are designed for maximum seal performance, flexibility, and torque retention
- O-ring gaskets meet or exceed OEM specifications
- Fits 2018–2021 Sherco 250 SE-R Racing and 300 SE-R Racing motorcycles
- Brand: Cometic
- Manufacturer part number: C3745
- Vendor part number: C3745
Fitment:
2018 Sherco 250 SE-R Racing
2018 Sherco 300 SE-R Racing
2019 Sherco 250 SE-R Racing
2019 Sherco 300 SE-R Racing
2020 Sherco 250 SE-R Racing
2020 Sherco 300 SE-R Racing
2021 Sherco 250 SE-R Racing
2021 Sherco 300 SE-R Racing