Fourxdoctor

I specialize in Jeeps, Early Broncos, 2wds and others. Parts, transfer cases, lockers, gears, lifts,

11/22/2025

For sale, regularly $89.95 $10 off for black Friday while supply's last. Plus shipping.

Four X Doctor Diff Guards, they fit Dana axles, 25,27,35,44,60,

Ford 8.8
Chrysler 8.25

Only fit the stock covers and Only come power coated semi black and come with hardware

Pm me if interested..

08/23/2025

This just spent 2 hrs on the back of a flat bed coming to the shop. I did one for him about 25 years ago, now I'm doing a second one for him.

Exhaust systems
Beadlocks
Tires
Axles
Air Systems
On Board Welders
Best Ice Coolers

Hit me up if you're looking for any of the above items. Except BFG Tires. Can't do a deal on these. 😞

08/22/2025

Four X Doctor Diff Cover guards for sale.

These are made by Four X Doctor. The cover guards were designed to give superior protection for your stock diff covers, the don't let the Cover get bent in to the Ring Gear and were designed to help you slide up and over rocks and debris instead of just taking a hit straight into the cover and stopping the vehicle. People that have bought these love them. People have had them on for at least 20 years. They also protect the bottom of cover from peeling up and keeps you from getting an oil leak. The Dana 44s fit up to 2016 Jeep. These Guards ONLY fit the STOCK Covers. They do not come in colors, only Powder Coated Semi Black and they Come with Hardware. If anyone is interested you can PM me.
I have ones that fit Dana 25, 27, 30, 35, 44, 60
Chrysler 8.25
Ford 8.8

08/01/2025

How many people will get this

07/03/2025

I really do dislike working on electric lockers, these things are notorious for breaking the wires at the stator. They go through so much heat cycle in the rear end that the wires become brittle and if you don't leave enough flex in the wires when the stator rotates back and forth against the housing, it works on the wires and then they break. When I took it apart they were not broke but they were so brittle and in the process of putting it back into the car one broke off and there's absolutely no way to repair these wires the way they break off. So then you're stuck buying a new stator when originally there was nothing wrong with the one you had other than the wires.

You would think that Detroit would come up with a better system for this.

06/01/2025

Aren't Sundays relaxing days. Not for us. Too many things to get done.

05/27/2025

If you are needing Raceline beadlocks, Diff cover Guards, Gas Tank skids for CJs, GGB mufflers for sxs's or maybe tires for your sxs Arisun Tires are a great tire. The After Shock XD tire comes in, 28",30", 32," 33" and 35" The Matrix Tire comes in 30", 33" and 35". The Matrix is a little bit more of a aggressive Tire. But Both tires work great!!!

And if you are looking for one of the best coolers out, then Canyon Coolers are the ones. Not everything is on my site yet, so hit me up on here, or call the shop at 818-845-2194 for special pricing 😁

Www.fourxdoctor.com

05/23/2025

I've seen a lot of botched up work In my years, but this one has to rank pretty high on the list. The only way I can figure that they put this cluster suck together was bolting the spring pad to the spring pack then up through the u-bolt plate and tightening everything together from inside the axle pad. Then putting it on the axle and welding it on as one unit. Because the center pin is upside down.

QUIT TRYING TO BE A MECHANIC WHEN YOU'RE NOT A MECHANIC.

04/07/2025

Looking for a nice looking and nice sounding Muffler for your Krx 1000, well, GGB has it. These are half the weight of the stock muffler and smaller. They are made out of all stainless steel and the craftsmanship is super clean and the fit perfect. This muffler was also designed to not have to have a tune on your motor. The stock muffler is pretty quiet and this is just a tad louder, it will make your sxs sound nicer and makes it sound like you have something under the back lol. This is the trail version muffler. I can install it here at the shop, or l can have it drop shipped to you. Which ever you prefer. You can email me, call or text if you would like to get one. Video coming soon.

Address

Riverside, CA

Website

http://Www.fourxdoctor.com/

Alerts

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

Contact The Business

Send a message to Fourxdoctor:

Shortcuts

Want your business to be the top-listed Autos & Automotive Service in Riverside?