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3.0" Electric exhaust cutout / bypass valve and more!

3.0" Electric exhaust cutout / bypass valve

AllFlow Electrically Controlled Exhaust Bypass Valve, 3.0"

EXH009577 by Shaman Equipment

Retail Price: $199.99
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PRICE: $99.99

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Our AllFlow Electronic Exhaust Bypass Valve (cutout) enhances the performance and sound of your exhaust. With the flip of a switch, it will open up the valve sending exhaust gases outward through the open valve. Our bypass valve kits use high quality polished stainless steel. This kit contains the needed installation materials: The piping, motor and switch.


Current runs directly through switch. Install with a fuse and use a relay for added protection. The switch has two open terminals - connect one to 12v positive and the other to ground. This is pre-wired as a current reversing switch, so which is positive does not matter. Operation is simple. Switch in neutral position (middle), no current flows to motor. Switch up, run motor in OPEN direction. Switch down, run motor in CLOSED direction.


Motor has over-current protection, and using this protection will not shorten the service life of the motor. Essentially the motor senses when the valve is in the fully open or fully closed position, and stops rotation. Therefore it is recommended to ignore the middle position of the switch, and just flip to CLOSED for normal mode and OPEN to bypass.

Solenoid is rated for high temperature and mounted in a way that enables a rating of 100,000 cycles. The rating on the motor is 4A at 14VDC. The rating on the switch is 8A at 14VDC. Therefore, in dual exhaust systems it is possible to install two wired to the same switch.


IMPORTANT.Removing the motor before performing any welding on this unit is necessary. Welding on the unit with the motor installed can result in premature or immediate failure of the motor due to the proximity and extremely high current used in certain types of welding.

Review Summary

5.0 (based on 1 reviews)
100% of respondents would recommend this to a friend.
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Reviewed by 1 customers Sort By:
By: 1989Mule

From: Ohio
5.0 Awesome product used on daily driver. Highly recommended for hot rod. 2017-01-25
Comments about AllFlow Electrically Controlled Exhaust Bypass Valve, 3.0":
This is a really awesome product for the price compared to other open header switches. Used this on my 1989 gmc for fun and I love it. You dont have to worry about being cited for loud exahust and if you get tired of it being loud just close it. I had a local shop install mine owner of the shop said it was nice quality. I would gladly buy another. Now I need one for everything I own.lots of people look around for a mustang or camaro when I open mine. Lots of thumbs up and many questions. If you want a loud vhehical without all the downsides this is highly recommended.
BOTTOM LINE? Yes, I would recommend this to a friend Was this review helpful? Yes / No