Compatibility: This exhaust flange is compatible with Predator engines (301cc 11hp, 420cc 13hp, 670cc 22hp), Hond* GX270/GX340/GX390 engines, Champio* Westinghous* generators, mini bikes, and go karts
Unique Design: Standard 1" NPT exhaust pipe adapter, and this kit is equipped with both male and female threaded flanges, delivering enhanced versatility. It is an excellent choice whether for installing an extended exhaust pipe or a muffler
National Pipe Taper: The thread profile is sturdy with strong load-bearing capacity; it is not easy to loosen after tightening and features excellent anti-vibration and anti-shock performance
Size: Outlet pipe is 1", mounting hole of flange is 2" (50 mm), Pls check the size carefully
Easy to Install: The conical surface provides a guiding function, enabling automatic alignment and preventing eccentricity during installation