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Exhaust Flapper Vacuum Valve, Stainless Steel - 2.5" (64mm) Diameter, 90 degree (Vacuum Closes valve)

SKU: ESP-6400-90-vac-close

These Stainless Steel Exhaust Flapper valves are great for getting the best of both worlds when building a custom exhaust system by allowing you to close a portion of the exhaust or one side to force the mufflers to baflle more thus making it quieter. They are best located on mufflers with dual outlets on one of the outlets, so when closed your exhaust will be much quieter. They are open by default and require vacuum to close.  vacuum canister is mounted at a 90 degree angle in relation to exhaust flow and they cane be mounted in any direction of flow.

NOTE: These are designed to be welded into your exhaust system by a trained welder and allow you to bolt on to close the valves by applying vacuum.  This can be done with your own manually controlled vacuum solenoid or reusing the factory system on a car that had a vacuum valve from the factory which applied vacuum to quite the car. Also keep in mind sometimes the open side of the exhaust or muffler when the flap is closed may need some restriction if the system is so large there is not enough back pressure to quiet the car.

This product fits the following vehicles:
Make Model Chassis Engine
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You're reviewing: Exhaust Flapper Vacuum Valve, Stainless Steel - 2.5" (64mm) Diameter, 90 degree (Vacuum Closes valve)
Off-road Use

By Purchasing any Off-Road use ONLY products from JH Motorsports, Inc. I acknowledge and understand the following disclosure. (This notice is located at the bottom of the page description of affected products on our website.)

Vehicle Code § 27156:
(b) No person shall operate or leave standing upon a highway a motor vehicle that is required to be equipped with a motor vehicle pollution control device under Part 5 (commencing with Section 43000) of Division 26 of the Health and Safety Code or any other certified motor vehicle pollution control device required by any other state law or any rule or regulation adopted pursuant to that law, or required to be equipped with a motor vehicle pollution control device pursuant to the National Emission Standards Act (42 U.S.C. Secs. 7521 to 7550, inclusive) and the standards and regulations adopted pursuant to that federal act, unless the motor vehicle is equipped with the required motor vehicle pollution control device that is correctly installed and in operating condition. No person shall disconnect, modify, or alter any such required device.
(c) No person shall install, sell, offer for sale, or advertise any device, apparatus, or mechanism intended for use with, or as a part of, a required motor vehicle pollution control device or system that alters or modifies the original design or performance of the motor vehicle pollution control device or system.

Health and Safety Code § 43000:
43001. The provisions of this part shall not apply to:
(a) Racing vehicles.

As the aforementioned code sections outline, it is against the law to operate or use a vehicle on public streets or highways with modified, altered, or disconnected motor vehicle pollution control devices. This may include but is not limited to, Evaporative Fuel Controls, Catalysts, DPF, PTOX, PCV Systems, Exhaust Gas Recirculation Systems, Oxygen Sensors, Thermostatic Air Cleaners, Air Intake Systems, Fuel Injectors, Regulators, Adjustable Cam Gears, ECU Programming, Mapping, or other Computer Modifications. Air Pumps, Air Injection, Timing, and any other Emission System Modification(s).

Purchaser acknowledges and certifies to JH Motorsports Inc., that Purchasers vehicle will only be used for racing applications or off road vehicle use only. Purchaser requests these modifications for the purpose of enhancing the vehicle for competitive Racing Applications and will not use this vehicle on public streets or highways. Purchaser agrees to indemnify JH Motorsports Inc., all employees, officers, owners, and subsidiaries for any civil or criminal liability arising out of use of Purchasers vehicle on public streets or highways as Purchaser has been duly notified of the laws and regulations regarding disconnecting, alteration, or modification of a vehicle’s pollution control devices. Purchaser understands and has been advised the driving of a vehicle on public streets or highways could result in criminal or civil penalties.

Prop 65

Warning: This product may contain a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm.

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