Top Notch Differentials

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

🔥 Upgrade Your GM 10-Bolt for Only $1,599 + Tax! Get the traction and reliability your truck deserves with a limited-sli...
06/13/2026

🔥 Upgrade Your GM 10-Bolt for Only $1,599 + Tax!

Get the traction and reliability your truck deserves with a limited-slip differential, new gears, premium bearings & seals, and professional installation all in one complete package.

Built for performance. Built to last.

📍 Top Notch Differentials South Gate, CA
📲 DM us with your year and model to reserve your spot.

If not us, WHO? 🚀

Big projects require big trust. 💯When customers invest thousands into their builds, they don’t look for the cheapest sho...
06/13/2026

Big projects require big trust. 💯

When customers invest thousands into their builds, they don’t look for the cheapest shop they look for the one that will do it right the first time.

This customer trusted us with a 6-piston Wilwood big brake conversion, and we’re making sure every detail is up to our standards before it ever hits the road.

At Top Notch Differentials, we don’t just build differentials we build complete driveline solutions with quality workmanship you can count on.

If not us, WHO? 🚀

📍South Gate, CA
📲 DM us for performance upgrades, differential builds, and custom installs.

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.

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

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