Maximize Performance with Thunderheader Black X-Series Exhaust System 

Looking for the best exhaust system to boost your motorcycle's performance? Look no further than the Thunderheader Black X-Series Exhaust System. Crafted with big cubic inch engines in mind, this exhaust system is designed to produce big numbers and optimal performance.

Large Diameter Exhaust Designed for Maximum Flow

The Thunderheader X-Series Exhaust System is designed with 2 in. primary tubes and a 12-degree transition chamber to allow for maximum exhaust flow. This means you get a smoother flow of exhaust gases, resulting in a less restricted system and more efficient combustion. Maximize your engine's potential and get the most out of every mile with this high-performance exhaust system.

Patented Baffle and Tail Cone Design Enhances Performance

The unique patented baffle in this exhaust system, in conjunction with the trademark tail cone, creates an anti-reversion condition in the pipe, which aids in the air/fuel flow on the intake stroke and allows more fuel into the combustion chamber. This translates to more torque at low and mid RPM ranges and maximum horsepower at top-end. Get ready for an unparalleled riding experience with this exhaust upgrade.

Complete with Heat Shields and Mounting Hardware

The Thunderheader Black X-Series Exhaust System comes complete with heat shields and all mounting hardware, ensuring a hassle-free installation process. The package also includes 12mm O2 sensor bungs and pre-installed O2 sensor ports with O2 sensor plugs, making it even easier to fit and modify to match your bike's specifications.

Special Fitment Note

Please note that this exhaust system requires using flat exhaust gaskets ONLY. If you do not have the flat ones, you will need to purchase them separately from Dennis Kirk P/N 267587. It will not work with tapered exhaust gaskets. By following these guidelines, you can guarantee a perfect fit and ensure optimal performance in no time.

Take Your Riding Experience to the Next Level

Upgrade your exhaust system now and maximize your motorcycle's performance with the Thunderheader Black X-Series Exhaust System. Trust in the quality craftsmanship of this exhaust system and its patented design to enhance your riding experience and provide unmatched performance. Order now and discover the true capabilities of your machine.

(1) Chrome steel 2 into 1 header assembly W/black steel heat shields installed

(1) Black steel muffler assembly

(1) Black steel muffler heat shield

(11) Small black hose clamps

(2) Large black hose clamps

(1) Band clamp

(1) 5/16"-18 x 1/2" Hex head bolt

(3) 5/16" Flat washers

(1) 5/16"-18 x 3/4" Hex head bolt

(1) 5/16"-18 Nylock nut

(1) 5/16"-18 Hex nut

(1) Black steel mounting bracket

(1) Black steel square spacer

(2) Black aluminum round spacers

(1) 3/8"-16 s 3" Socket cap head bolt

(2) 3/8"-16 x 1-3/4" Socket cap head bolts

Instructions

The Air Resources Board (ARB) does not permit the use of aftermarket emission-related parts that alter the air/fuel ratio of an emission-controlled vehicle. Due to these legal restrictions this part cannot be shipped to California.