We have moved to 409 West Adams Avenue in Riverton Wyoming.  The move is now complete and we are operational with all services available again.  We are also taking parts orders and appointments for machine work at our new number: (307) 463-0117.
Your Diesel Deserves The Best.
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     Mountain High Performance (MtnHiPerf, MHP) is your "Go To" Diesel Performance Machine shop, able to help with any of your light duty performance or stock diesel engine needs.  We offer  MHP Performance Push Rods, Valve Springs, Oversize Stainless Steel valves,   Custom Porting,  Pressure Testing, Resurfacing operations, CNC Fire Ring Groove machining, "O" ring groove machining, Boring, Honing, Custom Sleeving, Connecting Rod resizing, Pin Bushing replacement and sizing, Crankshaft work, Balancing, and much more for your Cummins, Duramax, and Ford Powerstroke diesels.  We also can supply most of the engine parts  you might need, to allow us to be your one stop engine shop. 
                          E-Mail us at MtnHiPerf@att.net  
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2026 is our 47th year of    continuous operation          under the same                    ownership