The Cometic C3139-EST 96mm Top End Gasket Kit is designed for Honda TRX450R and TRX450ER performance applications. This kit raises compression to support stronger low-end power while providing the sealing performance required for reliable engine assembly. It is designed to fit 2006-2009 and 2012-2014 Honda TRX450ER electric-start models, along with 2006-2008 Honda TRX450R models.
This Cometic top end gasket kit uses application-specific materials to support proper torque retention, flexibility, and long-term sealing. The graphite gasket features a steel core laminated on both sides with flexible graphite, helping it conform to mating surfaces during installation. Fiber gaskets are engineered for maximum seal, flexibility, and torque retention, while the included O-ring gaskets meet or exceed OEM specifications.
Manufacturer part number: C3139-EST. Vendor part number: C3139-EST. The 96mm kit is intended for compatible Honda TRX450R and TRX450ER engine configurations. Confirm the model year, electric-start configuration, bore application, and engine specifications before installation to ensure proper fitment. Installation should follow the vehicle manufacturer's service procedures and recommended torque specifications.
Features:
- Compression Increase: Raises compression to support improved low-end power.
- Graphite Construction: Steel-core graphite gaskets are laminated on both sides with flexible graphite for dependable sealing.
- Fiber Gaskets: Designed for maximum seal, flexibility, and torque retention.
- O-Ring Gaskets: Meet or exceed OEM specifications for compatible applications.
- Application Fitment: Fits 2006-2009 and 2012-2014 Honda TRX450ER electric-start models and 2006-2008 Honda TRX450R models.
- Brand: Cometic.
- Manufacturer Part Number: C3139-EST.
- Vendor Part Number: C3139-EST.
Fitment:
2006 Honda TRX450ER Electric Start
2006 Honda TRX450R
2007 Honda TRX450ER Electric Start
2007 Honda TRX450R
2008 Honda TRX450ER Electric Start
2008 Honda TRX450R
2009 Honda TRX450ER Electric Start
2009 Honda TRX450R
2012 Honda TRX450ER Electric Start
2012 Honda TRX450R
2013 Honda TRX450ER Electric Start
2013 Honda TRX450R
2014 Honda TRX450ER Electric Start
2014 Honda TRX450R