DynoMax Ultra Flo Welded Muffler - 3 in Offset Inlet - 3 in Center Outlet - 14 x 9-3/4 x 4-1/2 in Oval Body - 19 in Long 2010185 They have superior tensile strength

They have superior tensile strength to resist cracking

534 lb/in Spring Rate

Must use reverse mounted starter

Mounts Clamp Style Separators to valve covers

DynoMax Ultra Flo Welded Muffler - 3 in Offset Inlet - 3 in Center Outlet - 14 x 9-3/4 x 4-1/2 in Oval Body - 19 in Long 2010185 They have superior tensile strengthDynoMax(R) Ultra Flo? Welded performance stainless steel mufflers feature 100 percent welded construction for lifelong durability. The unrestricted, straight through design dyno proven to flow up to 2, 000 SCFM and support up to 2, 000 horsepower. Each muffler uses our exclusive Continuous Roving Fiberglass (CRF) Technology to absorb unwanted interior resonance while maintaining a deep performance tone. The "Pure Unadulterated POWER" of DynoMax(R)