Established in 1993, Guanfa Valve Manufacture Co., Ltd. is specialized China exhaust flange manufacturer and distributor of valves, hoses, tubes and pipes. Our oem exhaust flanges are suitable for acid, alkali, water, steam, seawater, coal gas and natural gas. They are widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy. The use of specialized software of Pro/E and CAD has shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of products. Our high-quality products have been exported to the North Amercia, UK, USA, Germany, Italy, India, France, Australia, Japan.

These are the same flanges that come with our exhaust products. These make it easy for to build your own exhaust for your custom applications. If you own a CR125R or CR250 02-03 you need to be aware of casting flaws in the OEM Honda exhaust flange. That defect has caused some stock flanges to break, leading to potential internal engine damage. Pro Circuit has fixed this problem for good with their CNC-machined exhaust flange. Works with the stock or any aftermarket exhaust system. The one exception is the joint in the reflux column flange adapter where a copper coupling is joined to the steel exhaust flange with a 45% silver alloy that melts at about 1370º F. This temperature is below the melting point of either the copper coupling or the mild steel flange, and the parts can be attached with a propane/Mapp® gas hand torch.

These are the same flanges that come with our exhaust products. These make it easy for to build your own exhaust for your custom applications. These are the same flanges that come with our exhaust products. These make it easy for to build your own exhaust for your custom applications.
These Exhaust Flange Gaskets are used mainly in Exhaust system of the engine and these are used
in the exhaust pipe to prevent leakage. It also comes in different materials like ASA, SAS and MLS.
This kit includes chrome-plated exhaust flanges and a pair of retaining rings. It fits all 1984-2007 Evolution® Big Twin, Twin Cam 88® and Sportster® motors. This kit is ideal for anyone building a bike from the ground up, or to upgrade the existing flanges on stock bikes. Replacement retaining rings are also available separately.

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