Upgrade your carbureted setup with our carbon fiber composite velocity stacks, engineered for performance and durability. Designed to fit Weber, Solex, and Mikuni carburetors, these stacks are available in 40mm, 45mm, and 48mm bore sizes, with stack height options of 35mm, 50mm, or 75mm to suit your specific tuning needs.

What's Included:

• 2 dual velocity stacks (4-cylinder applications)
• 3 dual velocity stacks (6-cylinder applications)

Key Features:

• High-Strength Carbon Fiber Composite: Superior chemical resistance and exceptional durability
• Reduced Heat Retention: Runs cooler than traditional aluminum stacks
• One-Piece Design: No weak points, built to last
• Optimized Inlet Trumpet: Delivers ideal balance of horsepower and torque across the rev range
• Multiple Size Options: Choose from 40mm, 45mm, or 48mm bore sizes
• Tuning Versatility: Shorter stacks (35mm) favor high RPM peak power, longer stacks (75mm) enhance low-end torque

Important Note: Unlike traditional designs, these velocity stacks do not insert into the carburetor to secure the choke plate. Please verify compatibility with your carb model before purchase.

Need a custom stack height? Simply reach out to us here for custom requests.