Upright Derby Headers
• Big Block Chevy
• 2-1/4'' Primary Tubes
• 4'' Diameter Collector
• Raw Finish
  
  Features:
• CNC Mandrel-bent tubes provide consistent tubing diameters for smooth flow and increases the cylinder scavenging effect and improves engine breathing
• Heavy duty 16-gauge 409SS tubing for increased strength and durability
• 2-1/4" tubing diameter for increased exhaust flow increasing performance and improved throttle response
• Extended 4" collector for maximum strength and exhaust flow
• Extra thick 7/16" header flange for a leak-free seal and maximum strength
• Welded-in collector merge spears to control exhaust gas re-entry into primary tubes

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART