

***Please read before you make your purchase*** EXHAUST DOES NOT WORK ON DUROMAX ENGINE 16HP OR 18 HP DO NOT ORDER IT IF YOU HAVE ONE OF THESE ENGINES! 1" Pipe Thread... 1" does not mean the actual size of the outside diameter... read at the bottom of the page to understand how to measure threads, Each thread size has a defined number of threads per inch (TPI). Erect Muffler Exhaust Pipe 1" thread for: Predator 301cc, Predator 420cc, GX 270, GX Honda 390 see photos for better details. Includes hardware & Gasket Finding the Correct Pipe Thread Size National Pipe Threads (NPT) Pipe sizes do refer to physical dimensions, but the plumbing industry standard for the sizes of pipe is not always as straight-forward as measuring the pipe. Measuring the pipe will oftentimes mislead you into choosing the wrong pipe, so do take care. The "pipe thread size" as shown in column 3 of the table below is measured and based on the inside of the pipe. But, to actually determine the size of a pipe, the outside diameter of each pipe or fitting must be measured and compared to the table for size identification. For example, a 3/4" NPT pipe thread has an outside diameter of 1.050 inches. Each thread size has a defined number of threads per inch (TPI). The 3/4" NPT pipe thread has 14 threads per inch. Both the TPI (threads per inch) and OD (outside diameter) of the thread are required for positive identification of thread size because several sizes have the same TPI. pipe thread specifications -Engine not included. Center hollow to hollow 2" (please look all The picture for details) This been tested on 8HP (301cc) OHV predator, and Predator 13 HP (420cc) Works also: GX 270 & 390, Briggs 1450 305cc, Lifan LF190F-BQ 15 HP 420cc Made in U.S.A.
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πΊπΈ Proudly Fabricated in Florida, USA
At AR-EXHAUST, every exhaust system is fabricated with durability, fitment, and performance in mind. We take pride in building quality products right here in the USA and providing the same level of service we would expect ourselves.
βββββ "The person who made this thing is an ARTIST! Worth every penny."
βββββ "Welds are excellent, fit perfectly, and even came with extra hardware."
βββββ "Awesome exhaust, couldn't be happier. Keep up the great work!"
βββββ "Amazing shipping speed. Great product and outstanding seller."
βββββ "100x better quality than expected. Strong construction and professional workmanship."
βββββ "Professional welding, excellent fitment, and premium quality materials."
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AR-EXHAUST | Precision Built Exhaust Systems
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βββββ Worth Every Penny!
"In a world where most things are made poorly, this item far exceeded my expectations. I was shocked by the quality. The pipe is heavy gauge, all the welds are correct, the cut edges are smoothed and finished properly, and it fit perfectly. The craftsmanship and attention to detail are outstanding. I highly recommend this item."
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βββββ Pure Awesomeness!
"Bought and installed this ceramic coated header on a Predator 212cc Hemi and it made a world of difference. The performance exceeded my expectations and the sound is incredible. The fit and finish are second to none. I would not hesitate to recommend this header to anyone looking to upgrade their engine."
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βββββ Works, Fits, and Sounds Great!
"This exhaust solved the clearance issue I was having and completely changed the sound of my go-kart. The fit was excellent, the construction was solid, and everything installed exactly as expected. A great product and well worth the investment."
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