Mountain High Performance in Arvada
(303) 420-6218
Full machine shop services offering performance Diesel upgrades including oversize (big) valves for Dodge Cummins 5.9, 6.7, GM Isuzu Duramax 6.6, Ford Navistar Powerstroke 6.0, 6.4 engines. Upgrades for springs, retainers, pushrods, guides, & seats are ...