JBA Headers 1811S 1-3/4" Shorty Stainless Steel Performance Header

The JBA 1811S is a 1-3/4" primary tube shorty header crafted from mandrel-bent stainless steel, designed as a direct-fit, bolt-on performance upgrade over restrictive factory exhaust manifolds. Built to deliver measurable gains in horsepower, torque, and throttle response, this header is an ideal first step in building a high-performance exhaust system.

At the heart of the 1811S is JBA's proprietary Firecone collector, a race-proven design engineered to maximize power and torque delivery across the RPM range. Combined with extra-thick collector domes and 3/8" thick machined flanges, this header resists warping and eliminates leaks for long-term, reliable performance.

Key Features:

• 1-3/4" mandrel-bent stainless steel primary tubes — optimized flow, durability, and improved throttle response
• Proprietary JBA Firecone collector — race-proven technology for maximum HP and torque gains
• 3/8" thick laser-cut machined flanges — resists warping, prevents leaks, simplifies installation
• Extra-thick collector domes — built to retain shape under heat and pressure, no distortion or leaks
• Oversized exhaust ports — increased flow and compatibility with ported cylinder heads
• Factory-style emission connections — simplifies installation and maintains emissions compliance
• Includes all high-quality hardware and detailed instructions for a professional, no-leak install
• Available in natural stainless, silver ceramic, or titanium ceramic coating options

The 1811S is designed to pair with JBA mid-pipes 1822S or 1823S for a complete cat-back system. This product has been granted a California Air Resources Board (CARB) Executive Order (EO) Exemption, making it street-legal in California and all other emissions-regulated states.