Kooks JB-188-25-18 1-7/8" 180-Degree Mandrel J-Bend Exhaust Tube 18 Gauge Mild Steel

The Kooks JB-188-25-18 is a 180-degree mandrel-bent J-bend exhaust tube designed for custom header fabrication and exhaust system building. Featuring a 1-7/8" (1.875") outer diameter and a 2.5" centerline radius, this J-bend is crafted from 18-gauge mild steel for reliable performance in street, strip, and off-road builds.

Mandrel bending ensures the tube maintains a consistent inner diameter throughout the entire bend, eliminating the flow restrictions and kinks common with crush-bent tubing. This makes the JB-188-25-18 an ideal component for builders constructing custom headers, replacing sections of an existing exhaust, or fabricating a complete one-off exhaust system.

Key Features:

• 180-degree J-bend configuration for maximum routing flexibility
• 1-7/8" (1.875") outer diameter tubing
• 2.50" centerline bend radius
• 18-gauge mild steel construction
• Mandrel bent to preserve full inner diameter and maximize exhaust flow
• Sold individually — order multiple pieces as needed for your build
• Compatible with Kooks weld-up custom header kits
• Handcrafted in the USA by Kooks Headers & Exhaust

Kooks Headers & Exhaust has been a leader in high-performance exhaust manufacturing since 1962, with a proven record across NHRA, IHRA, NMCA, NMRA, NASCAR, and SCCA competition. All Kooks products are backed by a limited lifetime warranty to the original purchaser.

California Proposition 65 Warning: This product can expose you to chemicals including Chromium and Nickel, which are known to the State of California to cause cancer, birth defects, or reproductive harm. For more information, visit www.P65Warnings.ca.gov.