The Cometic C3174-EST 77mm Top End Gasket Kit is designed for dependable top-end service on select Kawasaki and Suzuki 250cc motocross motorcycles. This kit raises compression to help support stronger low-end power while providing the gasket components needed for a reliable engine rebuild. It is engineered for use with 77mm applications and is a practical choice for maintenance, performance work, or replacement of worn top-end gaskets.
Cometic manufactures this kit using gasket materials selected for sealing performance, flexibility, and torque retention. The graphite gaskets feature a steel core laminated on both sides with flexible graphite for consistent sealing under demanding engine conditions. Fiber gaskets are designed to provide maximum seal, flexibility, and torque retention, while the included O-ring gaskets meet or exceed OEM specifications. Together, these materials help support reliable compression and oil sealing when properly installed according to the motorcycle manufacturer’s service procedures.
Fitment includes 2004–2008 Kawasaki KX250F models and 2004–2006 Suzuki RM-Z250 models. The manufacturer is Cometic, the brand is Cometic, and the vendor part number is C3174-EST. Verify the motorcycle model year, bore size, and engine configuration before ordering to ensure proper application. This top-end gasket kit is intended for the listed Kawasaki and Suzuki applications and should be installed with clean, properly prepared mating surfaces and correct fastener torque.
Features:
- 77mm top-end gasket kit for select Kawasaki KX250F and Suzuki RM-Z250 motorcycles
- Raises compression to support improved low-end power
- Graphite gaskets feature a steel core laminated on both sides with flexible graphite
- Fiber gaskets are designed for maximum sealing, flexibility, and torque retention
- O-ring gaskets meet or exceed OEM specifications
- Brand: Cometic
- Manufacturer: Cometic
- Vendor part number: C3174-EST
- Fitment: 2004–2008 Kawasaki KX250F and 2004–2006 Suzuki RM-Z250
Fitment:
2004 Kawasaki KX250F
2004 Suzuki RM-Z250
2005 Kawasaki KX250F
2005 Suzuki RM-Z250
2006 Kawasaki KX250F
2006 Suzuki RM-Z250
2007 Kawasaki KX250F
2008 Kawasaki KX250F