The Cometic C3743 Top End Kit is designed for Sherco 125 SE-R Racing two-stroke engines that need reliable sealing and increased compression performance. This kit raises compression to help improve low-end power while providing the gasket coverage needed during top-end service or engine rebuilding. It is engineered for a precise fit on compatible applications and is suitable for riders, technicians, and builders seeking dependable replacement components.
Cometic manufactures the C3743 kit with a combination of high-quality gasket materials selected for sealing performance, flexibility, and torque retention. The graphite gaskets feature a steel core laminated on both sides with flexible graphite, helping maintain a secure seal through engine heat cycles and vibration. Fiber gaskets are designed to maximize sealing capability while accommodating flexibility and maintaining clamping performance. O-ring gaskets meet or exceed OEM specifications for reliable fit and sealing.
Fitment includes the 2018, 2019, 2020, and 2021 Sherco 125 SE-R Racing. Verify the motorcycle model and engine configuration before installation. This Cometic top-end kit is identified by manufacturer part number C3743 and vendor part number C3743.
Features:
- Compression Improvement: Raises compression for improved low-end power.
- Graphite Gaskets: Feature a steel core laminated on both sides with flexible graphite for dependable sealing.
- Fiber Gaskets: Designed for maximum seal quality, flexibility, and torque retention.
- O-Ring Gaskets: Meet or exceed OEM specifications for consistent fit and sealing.
- Fitment: Compatible with 2018, 2019, 2020, and 2021 Sherco 125 SE-R Racing models.
- Brand and Part Number: Cometic C3743 top-end kit, manufacturer and vendor part number C3743.
Fitment:
2018 Sherco 125 SE-R Racing
2019 Sherco 125 SE-R Racing
2020 Sherco 125 SE-R Racing
2021 Sherco 125 SE-R Racing