Tier One Transmissions

09/04/2026

Closed for Labor Day

Labor Day is about recognizing the people who put in the work every day — the builders, technicians, fabricators, drivers, tradesmen, small business owners, and everyone else who takes pride in earning it.

At Tier One, we know nothing great gets built without hard work and good people behind it. We’re incredibly thankful for our team, our customers, and everyone out there who keeps America moving.

We’ll be closed Monday, September 7th so our crew can enjoy a well-earned day with their families. We’ll be back at it Tuesday.

From all of us at Tier One Transmissions, Happy Labor Day.

09/04/2026

Today has been all about Comp 48re building and development. Machining in-house and cutting roughly 5 pounds of rotating mass should result in fast responses coming off of trans-break. We have a lot of drag racing in the next few weekends to collect data and further push our 48 program.

09/03/2026

Based on this 100% accurate infographic from Harvard, we peaked.

09/03/2026

Building a 900HP 68RFE with Tier One Transmissions.

09/03/2026

A few weeks until we head to Texas to battle for the overall #1 spot in the 5.90 class. 🏁

Still plenty of work to do before then — lots of fab work, testing, tuning, and prep to get the truck ready.

Time to get to work. 🔧💪
NHRDA (National Hot Rod Diesel Association)

09/02/2026

68RFE? Oh yeah, we do those. 😎

Our 5-second street truck can grab groceries, hit the street, show up to a no-prep and hurt some feelings — all while enjoying all 6 gears doing it.

We don’t just build 68RFEs and hope they hold. We race them, abuse them, learn from them, and take that data back to the transmissions we build for our customers.

Daily driver. Tow rig. Race truck. We’ve got a 68RFE build for it.

Tier One and Done.

09/02/2026

You know us for transmissions. Now let us take care of the rest of your truck. 🔧

Tier 1 is your one-stop shop for all things truck — from routine maintenance and diagnostics to diesel repair, suspension, drivetrain, performance upgrades, and complete transmission builds.

No bouncing around from shop to shop. Whether it’s your daily driver, work truck, tow rig, or performance build, our team is ready to keep it on the road.

📍 Arizona
🔧 Diesel & Truck Repair
⚙️ Transmissions
💪 Maintenance & Performance

One truck. One shop. Tier 1.
602-399-5484
Give us a call or stop by the shop to get on the schedule.

08/31/2026

WE’RE LOOKING FOR NEW TIER 1 DEALERS

We’re expanding the Tier 1 dealer network and looking for quality shops that want to offer their customers proven transmission options backed by real testing and development.

Why become a Tier 1 dealer?

+ Dyno Tested — We test our transmissions* before they leave our facility, helping ensure they’re ready to perform when they arrive.

+ In-Stock Units & Fast Build Times — Less time waiting on a transmission means you can get your customers back on the road faster.

+ R&D Backed Builds — We’re constantly testing, collecting data and improving our builds. What we learn on the dyno and at the track goes directly back into our products.

+ Multiple Platforms Available — We offer a growing lineup of transmission models for diesel and performance applications, giving our dealers more options for their customers.

+ Built by People Who Use Them — From daily drivers and tow rigs to high-horsepower race trucks, we build, test and push these transmissions ourselves.

We don’t just want to sell transmissions to shops. We want to build a strong dealer network with businesses that care about quality, reliability and taking care of their customers.

Interested in becoming a Tier 1 Transmissions dealer?

Send us a message or contact us today to learn more about our dealer program.

TIER 1 TRANSMISSIONS | BUILT. TESTED. PROVEN.

Tier One is your one-stop shop for high-performance diesel & gas truck transmissions, parts, & transmission service in the Phoenix Area! Call 602-399-5484!

08/31/2026

BUILT. IN STOCK. READY TO SHIP.

Need a transmission and don’t want to wait weeks for it to be built?

We have select Tier 1 Transmissions already built and ready to ship.

✅ NO BUILD TIME
✅ Built with proven, quality parts
✅ Backed by Tier 1 warranty
✅ Nationwide shipping
✅ Get your truck back on the road ASAP

Whether it’s a daily driver, tow rig, work truck, or performance build — we may already have the transmission you need sitting on the shelf.

IN STOCK MEANS IN STOCK.
Once they’re gone, normal build times apply.

602-399-5484
TierOneTransmissions.com

TIER ONE AND DONE.

08/28/2026

Friday Transmission shop bloopers.

Ryan Milliken