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]

Adventure starts here. Your truck is your gateway to the great Montana outdoors. Make sure your rig is ready for the ne...
08/28/2026

Adventure starts here. Your truck is your gateway to the great Montana outdoors. Make sure your rig is ready for the next weekend full of adventure!

A clean look for a powerful beast.
08/24/2026

A clean look for a powerful beast.

It’s what’s under the hood that counts. At GOS Performance, we don’t just sell parts—we live for power, efficiency, and ...
08/21/2026

It’s what’s under the hood that counts. At GOS Performance, we don’t just sell parts—we live for power, efficiency, and engineering excellence.

Cruise with confidence. Whether you’re on the open road or conquering the mountain trails, GOS Performance makes sure yo...
08/17/2026

Cruise with confidence. Whether you’re on the open road or conquering the mountain trails, GOS Performance makes sure your ride is running at its absolute peak. We offer performance upgrades, maintenance, and expert service right here in Livingston, MT.

Mud, rocks, or steep trails—if you push your rig to the limit, you need components that won't let you down. From heavy-d...
08/14/2026

Mud, rocks, or steep trails—if you push your rig to the limit, you need components that won't let you down. From heavy-duty suspension setups to drivetrain upgrades, we build trucks to handle the toughest Montana terrain. 🚜💨

Weekend plans? We get it—your truck works hard all week so you can play hard on the weekend. If your tow rig is slipping...
08/10/2026

Weekend plans? We get it—your truck works hard all week so you can play hard on the weekend. If your tow rig is slipping, sluggish, or due for service before your next lake trip, bring it by the shop!

Let's make sure you get to the water without a hitch.

Precision down to every single bolt. Transmission teardowns, custom builds, and complex gear work are all in a day's wor...
08/07/2026

Precision down to every single bolt. Transmission teardowns, custom builds, and complex gear work are all in a day's work at GOS Performance. We take pride in doing things right so you can hit the road—or the trail—with total confidence.

Heavy-duty power demands top-tier service. Whether you’re looking to upgrade lighting, boost performance, or get routine...
08/03/2026

Heavy-duty power demands top-tier service. Whether you’re looking to upgrade lighting, boost performance, or get routine maintenance done right, we’ve got your modern diesel covered.

Nothing beats the look of a freshly rebuilt turbo ready to go back where it belongs.Attention to detail matters. Quality...
07/30/2026

Nothing beats the look of a freshly rebuilt turbo ready to go back where it belongs.

Attention to detail matters. Quality parts matter. Experience matters.

That's why diesel owners throughout Montana trust GOS Performance for repairs, upgrades, and performance solutions.

📍 Livingston, MT

Lake day success starts with having enough truck.From boats and campers to horse trailers and equipment, diesel trucks a...
07/26/2026

Lake day success starts with having enough truck.

From boats and campers to horse trailers and equipment, diesel trucks are built to tow—and we're here to keep them that way.

What's your favorite thing to pull behind your truck?

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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