The Thrush 89024 is a header back kit for 1973-1986 Chevrolet K10, K20, K30, GMC K1500, K2500, K3500, built with a dual muffler configuration. Pipe diameters are increased from OEM sizing to improve flow, and the kit is manufactured with precision benders and fixture-checked for a proper, easy installation. H-pipe and header reducers are not included.

Thrush 89024 Features:

• Pipe Diameter: 2.25 in.
• Pipe Material: Steel
• Pipe Finish: Aluminized
• Bend Type: Mandrel
• System Style: Header Back
• System Type: Dual
• Muffler Type Included: Thrush Turbo
• Muffler Count: 2
• Muffler Material: Steel
• Muffler Finish: Aluminized
• Tip Shape: Round
• Tip Material: Steel
• Tip Finish: Aluminized
• Clamp Count: 10
• Hardware, Clamps, and Hangers Included
• Kit Contents: Intermediate Pipes, Mufflers, Extension Pipes, Tail Pipes, Clamps, Hangers
• Direct-fit application for 1973-1986 Chevrolet K10, K20, K30, GMC K1500, K2500, K3500

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.

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