Athena 68mm Big Bore Race Cylinder Kit – Yamaha Banshee 350 (1987–2006)

🛠️ Description

Upgrade your Yamaha Banshee with the Athena 68mm Big Bore Race Cylinder Kit, taking displacement to 392cc for serious performance gains. This kit includes nickel-carbide–plated aluminum cylinders, a removable bronze dome cylinder head, and Athena’s high-performance power valves designed specifically for this kit. Perfect for riders looking for reliable power in the dunes, track, or trail.

✅ What’s Included

• (2) Aluminum cylinders, 68.00mm bore, nickel-carbide coated

• Cylinder head with removable bronze dome

• High-performance, hard-anodized power valves (non-OEM)

• Piston kit (cast lite flat-top pistons, rings, clips, pin)

• Complete Athena top-end gasket set with seals and hardware

📦 Fitment

• Yamaha Banshee YFZ350 (1987–2006)

🛡️ Warranty Info

Backed by Athena against defects in materials and workmanship. Improper installation, tuning, or race-related damage is not covered. Professional installation is strongly recommended.

🔑 Key Features

• Big Bore setup: increases displacement to 392cc

• Nickel-carbide–plated aluminum cylinders for durability and heat dissipation

• Removable bronze dome cylinder head

• Race-designed hard-anodized power valves (OEM valves not compatible)

• Cast lite flat-top pistons included

• Complete with top-end gaskets, seals, and hardware

• Designed for high-performance 2-stroke Banshee builds