2601 W 10th St, Greeley, CO 80634
    970-353-2537
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    Serving Johnstown, CO (80534) — 15.4 miles (20–24 mins)Fastest Route: via US-34 E to W 10th St
    Johnstown Dedicated Service Hub
    Performed at 2601 W 10th St, Greeley, CO 80634

    Custom Exhaust & Performance for Johnstown, CO

    Flowmaster, MagnaFlow, Pre-Made Mandrel Bends & Dual Pipes

    Located along the US-34 corridor in southern Weld County near the Pioneer Ridge and Johnstown Plaza developments, Johnstown commuters rely on Collins Muffler & Service for fast turnarounds on check engine light diagnostics (P0420/P0421 codes), catalytic converter theft replacements, and full brake overhauls. Collins Muffler & Service provides local Johnstown drivers with master precision custom exhaust & performance right down the road in Greeley.

    Master Shop Quality
    Custom & OEM Expertise

    Includes precision fitment, quality parts & master weld guarantee.

    57-Year Local Warranty

    We stand behind all catalytic converter installations, custom dual exhaust welds, and brake services.

    Johnstown, CO Local Context

    Why Johnstown Drivers Come to Us for Custom Exhaust & Performance

    Johnstown Geography

    4,862 ftWeld County

    Johnstown sits at roughly 4,862 ft on rolling high-plains terrain along the US-34 and CO-60 junction in southern Weld County. The town borders the Little Thompson River drainage to the south and the growing Pioneer Ridge residential plateau to the northeast.

    Johnstown Vehicle Profile

    Johnstown's newer subdivisions mean a high concentration of late-model sedans, crossovers, and SUVs — Honda CR-Vs, Toyota RAV4s, Ford Escapes — owned by commuters working in Loveland, Longmont, and the Denver tech corridor.

    Johnstown's southern Weld County exposure brings strong spring winds and summer heat that stress A/C systems. Winter ice on the US-34 overpasses requires healthy brakes and suspension for safe stopping.

    Custom Exhaust & Performance in Johnstown

    Johnstown's commuter vehicle profile means we see frequent P0420/P0421 catalytic converter efficiency codes and converter theft on popular targets like the Honda Accord, Toyota Prius, and Ford F-150 parked at Pioneer Ridge and Johnstown Plaza.

    Take US-34 east from Johnstown straight into Greeley, then west on W 10th Street. The CO-60 junction can back up during commuter rush. Plan 20–24 minutes outside of peak hours.

    What's Included in Our Custom Exhaust & Performance Service:

    Flowmaster, MagnaFlow, Borla mufflersPerformed on site using professional lift bays and hydraulic bending machinery.
    Pre-made mandrel-bent stainless dual pipingPerformed on site using professional lift bays and hydraulic bending machinery.
    Custom headers & cat-back systemsPerformed on site using professional lift bays and hydraulic bending machinery.
    Polished chrome & matte black tipsPerformed on site using professional lift bays and hydraulic bending machinery.

    Serving Vehicle Owners Across Weld County

    In addition to central Greeley, we regularly welcome drivers from Evans, Eaton, Windsor, La Salle, Milliken, Johnstown, and Kersey for specialized exhaust fabrication and brake service.