JBA 304 series stainless steel mid-pipes are the perfect compliment to your JBA Headers or JBA Exhaust system. These systems open up the flow on exhaust systems for a dramatic increase in performance and improved sound.They are available for many popular applications as a stand alone upgrade or an addition to existing JBA products. Each system is application specific and optimized for your vehicle to get a perfect fit every time. They feature smooth flowing mandrel-bent tubing, heavy duty flanges, factory style hangers and provisions for factory emissions equipment for a simple installation. Available in H or X pipe configuration for most applications.

O2 sensor provisions where required for proper connection to EFI headers
Factory style hangers for easy installation
Large diameter mandrel bent 304 series stainless tubing for increase horsepower and torque
Heavy duty flanges for durable exhaust system connections
This product is not legal on catalytic converter equipped vehicles for street or off highway use inCalifornia or in states that have adopted California emissions regulations and is only intended for closedcourse competition

JBA Performance Exhaust 36611SH 2.5" "304 Series" Stainless Steel Mid-Pipe 65-73 Mustang H-Pipe for use with 36611S Long Tube Headers
Surface: 304SS Stainless Steel
Tube Size: 2 1/2"
For Off-road Use Only. This Product Is Not Emissions Legal.
For Use w/ 6611s Headers
For Off-Road Use Only

JBA Performance Exhaust 36611SH 2.5" "304 Series" Stainless Steel Mid-Pipe 65-73 Mustang H-Pipe for use with 36611S Long Tube Headers
Surface: 304SS Stainless Steel
Tube Size: 2 1/2"
For Off-road Use Only. This Product Is Not Emissions Legal.
For Use w/ 6611s Headers
For Off-Road Use Only

Application

1966 Ford Mustang 4.7L/289 V8
1968-1973 Ford Mustang 5L/302 V8

Rebates

Aeromotive & PerTronix Black Friday 10% Off Sale

Black Friday Savings Are Here! From November 1 2026 through November 30 2026, save 10% on all Aeromotive and PerTronix products, including top performance brands like Doug's Headers, Taylor Cable, and JBA Performance Exhaust. Whether you're upgrading your fuel system, ignition components, headers, spark plug wires, or exhaust setup, this limited-time offer makes it easy to get premium performance parts at a great price. No coupon required, just shop qualifying Aeromotive and PerTronix brands and enjoy instant savings all month long.

Guides & Documents

Exhaust Intermediate Pipes Technical Information (44736611SH)

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

JBA Headers 36611SH Specifications

KEY SPECS
MFG. Part #	36611SH
Brand	JBA Headers

GENERAL
GTIN Code	694342545055

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Fitment

1966-1973 Ford Mustang