Top Notch Differentials

Top Notch Differentials Whether it’s an OEM rebuild, Off-road, or drag racing, we’ve got you covered.

06/01/2026

Some of you will recognize this truck immediately. Others may just see an unfinished project.

But for the veterans of the truck scene, this one carries history.

Formerly owned by , this truck helped leave its mark on the community years ago. We’re proud to help keep it moving forward as brings it back to life.

At Top Notch Differentials, we’re behind our customers at every stage of the journey whether the truck is winning trophies or sitting in the garage waiting for its comeback.

The best builds aren’t always the shiny ones. Sometimes they’re the ones being rebuilt.

The best Jeep builds happen underneath. Wheels and tires get the attention, but the drivetrain is what gets you through ...
05/18/2026

The best Jeep builds happen underneath. Wheels and tires get the attention, but the drivetrain is what gets you through the obstacles. This 2021 Jeep Gladiator sitting on 40s got the full treatment to match the setup and put the power where it belongs. 🔥

Complete front & rear upgrade including:
⚙️ 5.13 gears
⚙️ New bearings & seals
⚙️ Chro-Moly front axle upgrade
⚙️ FAD delete
⚙️ Spicer modular iron covers

Ready for the rocks, the trails, the mud, and whatever line comes next. Built to work on the trail not just look good in the parking lot.

At Top Notch Differentials, this is what we specialize in. From complete re-gears to drivetrain upgrades built around your tire setup and goals, we build Jeeps that are meant to perform where the pavement ends. 🏔️🌵

Started from the bottom with a vision bigger than ourselves.Now we’re building more than differentials we’re building a ...
05/18/2026

Started from the bottom with a vision bigger than ourselves.

Now we’re building more than differentials we’re building a legacy.
And we’re just getting started. 😎🔥

Top Notch FTMFW 🚀

It’s our owners birthday month… and we’re celebrating by giving back to our customers. 🎉For a limited time, we’re runnin...
04/21/2026

It’s our owners birthday month… and we’re celebrating by giving back to our customers. 🎉

For a limited time, we’re running our Birthday Sale on one of our most popular builds.

This special applies to GM 10-bolt differentials only.

$1,600 + tax gets you:• Aftermarket Posi Unit• Any Gear Ratio• Complete Bearing Kit• Seals & Fluid• Professional Installation

Same proven package. Same quality work.Just a limited-time birthday deal to show our appreciation.

Limited spots available once they’re filled, the sale is over.

📍 South Gate, California Book your spot today.

Another Coyote-powered F-150 back on point.After stepping up to 35” tires, the owner noticed a big drop in performance a...
04/08/2026

Another Coyote-powered F-150 back on point.
After stepping up to 35” tires, the owner noticed a big drop in performance and knew exactly who to call.

We brought it back to life with:
• 4.56 gear ratio upgrade
• Eaton Detroit TrueTrac posi
• New bearings & seals

Now this truck drives the way it should strong, responsive, and ready for anything.
If bigger tires slowed your truck down, we’ve got the fix.

They say it’s Modelo time, foo…Nah. Around here, it’s TOP NOTCH time. 🔧New merch just droppedSmall through 2XL available...
04/06/2026

They say it’s Modelo time, foo…
Nah. Around here, it’s TOP NOTCH time. 🔧

New merch just dropped
Small through 2XL available
Limited supply no restocks!

Wear it to the shop, the meet, or the carne asada.

Don’t wait till they’re sold out pull up and get yours.

This Fox Body is no joke pushing some serious power and built to handle it the right way.What went into this build:• Pos...
03/31/2026

This Fox Body is no joke pushing some serious power and built to handle it the right way.

What went into this build:
• Posi unit install
• 3.73 gear set
• 31-spline axle upgrade
• New bearings & seals

Stronger, more reliable, and ready to hook when the pedal drops. Built the Top Notch way.

Address

5907 Firestone Boulevard
Downey, CA
90280

Opening Hours

Monday 10am - 6pm
Tuesday 10am - 6pm
Wednesday 10am - 5pm
Thursday 10am - 5pm
Friday 10am - 6pm
Saturday 10am - 2pm

Telephone

+3234805030

Website

Alerts

Be the first to know and let us send you an email when Top Notch Differentials posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Shortcuts

Share

Category