Billet Aluminum Upgrade Package Bring your older BVC Big Wheels Kit up to our latest specifications with our Billet Aluminum Upcharge package. Designed for customers who purchased one of our earlier-generation kits, this upgrade replaces key components with precision CNC-Machined billet aluminum parts for improved strength, durability, and appearance. Benefits Include: Increased durability and long-term reliability Precision-machined billet aluminum Improved corrosion resisitance Modular Design Premium appearance and finish Built using our latest-generation component designs New Axle Blocks Swingarm will include the following: Front Chain Guard Rear Chain Guard New Chain Block Swingarm Bearings (Optional Upgrade Charge) Anodizing (Optional Upgrade Charge)