GOS Performance

GOS Performance Located in the heart of the Rocky Mountains, is your # 1 source for Cummins conversions and Allison transmission conversions. Unparalleled support, period.

Located in the heart of the Rocky Mountains, we are your # 1 source for Ford Cummins conversions and Allison transmission conversions! We manufacture and sell the best conversion parts in the industry, with no middle man involved. We are your direct source for Cummins conversion parts. Here at GOS you can rest assured that the product you purchase is the best money can buy. Customer service is our

#1 priority before, during, and after the sale, which is why our technical support team is second-to-none. We have been performing Cummins swaps since 2001. What does this mean for our customers? Need help with torque specs? We have the answers. Need help with proper install procedures? It doesn't matter if you are a do it yourselfer, a seasoned vet or a service repair shop, if you can't find the part or information you need? Please call us at 1-800-620-4467, or e-mail us at [email protected]

Loaded up with bikes and heading to the mountains? Get ready to carry your gear, conquer steep climbs, and reach the tra...
07/18/2026

Loaded up with bikes and heading to the mountains? Get ready to carry your gear, conquer steep climbs, and reach the trailhead with confidence. 🚵‍♂️ Where will your next ride take you?

The best fishing spots usually aren't close to pavement.Good thing diesel trucks were built for roads less traveled.From...
07/14/2026

The best fishing spots usually aren't close to pavement.

Good thing diesel trucks were built for roads less traveled.

From remote river access points to weekend adventures, GOS Performance helps keep your truck ready for wherever Montana takes you.

📍 Livingston, Montana

Big mountains. Big trailers. Big power.Whether you're headed across Montana or exploring the backroads of the West, your...
07/10/2026

Big mountains. Big trailers. Big power.

Whether you're headed across Montana or exploring the backroads of the West, your truck needs dependable towing performance when the load gets heavy.

We help diesel owners get the most out of their trucks every mile of the journey.

When it comes to towing, hauling, and performance, your transmission does the heavy lifting.📍 Livingston, MT🔧 Diesel Rep...
07/06/2026

When it comes to towing, hauling, and performance, your transmission does the heavy lifting.

📍 Livingston, MT
🔧 Diesel Repair & Performance Specialists

There’s no better way to end a day in Montana than on the water with family. Whether you're chasing trout or making memo...
07/02/2026

There’s no better way to end a day in Montana than on the water with family. Whether you're chasing trout or making memories, your truck should be ready for every adventure.

At GOS Performance, we keep your diesel running strong so you can focus on what matters most.

📍 Livingston, MT

Work hard all week. Tow something fun on the weekend.🚤☀️
06/28/2026

Work hard all week. Tow something fun on the weekend.🚤☀️

Keeping the classics running like new. ⚙️
06/25/2026

Keeping the classics running like new. ⚙️



Crafted by the fathers who instilled in us the values of hard work, humility, and a love for the great outdoors. Wishing...
06/21/2026

Crafted by the fathers who instilled in us the values of hard work, humility, and a love for the great outdoors. Wishing everyone a wonderful Father’s Day from GOS Performance! 🏞️👨‍👧‍👦💪

Lake Day Ready, Always 🌊☀️
06/20/2026

Lake Day Ready, Always 🌊☀️


Precision matters. Every detail counts. 🔧🔍 🔧🔍
06/16/2026

Precision matters. Every detail counts. 🔧🔍

🔧🔍

Address

306 S 12th Street Unit B
Livingston, MT
59047

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+14062225440

Website

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