Yamaha Banshee 421cc CPI Polished Serval Cub Top End Kit

💥 Add Big-Time Serval Cub Power to Your Banshee!

This high-performance 421cc CPI Serval Cub top end kit brings serious horsepower and aggressive styling to your Yamaha Banshee. Built for all-out power, this setup fits all years and models — just bolt on and ride.

Note: Polished version ships in 3 weeks due to processing time.

📦 Kit Includes:

• CPI Serval Cub Cylinder – 421cc

  • Polished finish (ships in approx. 3 weeks)

• Wiseco 573 Series Pro Lite Pistons – Forged for durability and performance

• Wiseco High-Temp Piston Rings – Long-lasting seal under extreme heat

• Chrome Wrist Pins & Circlips – Smooth, secure installation

• Cometic Cheetah Cub Base Gasket (.020") – Premium sealing performance

• ARP 12-Point Base Nuts – Superior clamping force

• Stud Extenders – Ready for long-rod setups

• Water Jacket Plugs – Prepped for clean coolant routing

🔧 Key Features:

• Fits all Yamaha Banshee models and years

• Delivers massive power gains with reliable, proven parts

• Works with most existing setups — ideal for high-performance builds

• Backed by trusted brands: CPI, Wiseco, ARP, Cometic

📦 Shipping Time:
Polished kits ship in approximately 3 weeks. Non-polished setups may ship faster. Tracking provided once in transit.

💬 Customer Support:
Available Monday–Friday, 7 AM to 4 PM PST, plus 24/7 live chat on the site for quick help.