Banshee 421cc CPI Serval Top End Kit – Titanium Studs + Cool Head

⚡️ 421cc CPI Serval Top End Kit – Yamaha Banshee (All Years & Models)

This premium top end package is built around the CPI Serval 421cc cylinder and stacked with Grade 5 Titanium hardware — the strongest, lightest, and longest-lasting fasteners you can get. It's a bolt-on kit made for performance, reliability, and easy serviceability.

✅ Fits all Yamaha Banshee models and years
❗ Requires +4mm stroker crank with 115mm rods
✅ No case mods required

📦 Kit Includes:

• CPI 68x58mm Serval Cylinder – 421cc Displacement

• Wiseco 573 Series Pro Lite Forged Pistons

• High Temp Piston Rings, Wristpins, Circlips

• Pro Design Billet Cool Head – With pump gas domes

• Cool Head O-Ring Kit

• Cometic One-Piece Cheetah Cub Base Gasket

• Intake Gaskets

• Water Jacket Plugs

🔩 Full Titanium Fastener Kit Includes:

• Titanium Head Stud Kit

• Titanium 12-Point Flange Nuts for Head and Base

• Titanium Stud Extenders + Nuts

• Titanium Cylinder-to-Case Stud Kit

• All titanium components are Grade 5 heat-treated alloy

• All fasteners are Allen head and come with a LIFETIME WARRANTY*

🔧 Key Features:

• Uses +4mm crankshaft with 115mm rods (not included)

• No trenching or case machining required

• Compatible with stock crankcases and stock-style carbs

• Ideal for drag, dune, or aggressive trail builds

• All parts are brand new and covered by manufacturer warranties

📦 Shipping Time:
Ships within 5–7 business days. You’ll receive tracking when your order ships.

💬 Customer Support:
Available Monday–Friday, 7 AM to 4 PM PST, and store chat runs 24/7.