Banshee Athena 421 Big Bore Conversion Domes +4mm – Cool Head Stroker O-Ring Kit | Fits All Yamaha Banshees (392cc to 421cc)

Unleash the full potential of your Yamaha Banshee with the Banshee Athena 421 Big Bore Domes +4mm Conversion Cool Head Stroker Dome O Rings. Custom-designed for seamless 421cc conversions, these precision-cut billet domes eliminate the need for a spacer plate, making them the perfect solution when upgrading from 392cc to 421cc.

Key Features:

• Perfect Fit: Specifically tailored for all Yamaha Banshee Athena heads during 421cc conversions.
• Pro-Level Performance: 24cc domes allow flexibility to run on pump or race gasoptimized for high-performance builds.
• Versatile Compatibility: Works effortlessly with Pro Design, Noss, ADA, Chariot, Vito’s, Mod Quad, and CPI heads. (Mod Quad’s O-ring kit is available upon request).
• Top-Quality Build: CNC-machined in the USA for unmatched precision and durability.
• Complete Kit: Includes a premium Cool Head O-ring kit for seamless assembly.

Why Choose ?

At , we combine expertise, top-tier materials, and unbeatable prices to deliver the best parts for your build. Whether youre upgrading for the dunes, trails, or track, our reliable components maximize power, performance, and reliabilityperfect for any serious Banshee rider.

Compatible Components: This setup is designed for use with 573M06800 pistons and a +4mm stroker crankshaft, ensuring exact fitment and maximum performance gains.

Built by enthusiasts, for enthusiasts, these made-in-USA domes will transform your ride. Ready to scream BRAPPPPPP down the track? Upgrade today!

– The Best Parts. The Best Performance. The Best Price. BRAPPPPPPPPPP!