We Engineer & Produce
Fuel Systems & Critical Components
For CNG-Powered Medium and Heavy-Duty Vehicles
Recent News
Mainstay Selects Luxfer G-STOR Go Cylinders for its CNG Fuel Systems for Heavy-Duty Trucks
Mainstay Fuel Technologies, Inc., announced that it has selected second-generation G-STOR® Go Type 4 cylinders, G-Flo® valves and related technologies from Luxfer Gas ... » Read Article.
NEW! 165 DGE Back-of-Cab CNG Fuel System
Mainstay Fuel Technologies, Inc. announces it has begun production of a new 165 DGE Back-of-Cab on-board CNG ... » Read Article.
Spire Natural Gas Fueling Solutions and Mainstay Fuel Technologies team up to offer more complete options for fleets considering CNG
Fleet operators looking to transition to compressed natural gas (CNG) got a big boost today. Together at the Advanced Clean Transportation (ACT) Expo, ... » Read Article.
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About Mainstay
Mainstay is a fuel system and component manufacturer located in Piedmont, SC, halfway between Charlotte and Atlanta. With a dedicated commitment to quality, integrity and adherence to best practices, we guarantee our work and your satisfaction.