Installed 4.88 Gears in my 2016

Unless you want your axles spinning at different speeds, I'd reccommend getting both

 

ok thnx.
i have no clue. i am new to trucks/4x4's. this is my first pick up.

 

I just had my gears installed two weeks ago. REM polished 4.88 gears and have the exact same noise.

 

Finally jumped to 285/70/17s and boy can I feel the difference going uphill.

On flat roads it's not bad at all. Guess I have to save up next for a regear

 

They sure make a difference. The transmission doesn't jump around anymore and holds 6th gear up small grades now.

 

Just had mine done at the 1st of the month and they are quiet also. no whine. Some trucks make this noise even from the factory.

 

had the whine with my Stock 3.90's and had the TSB done before going to Nitro 4.88's - the Dealer replaced rear leaf springs and rear cab mounts. The whine is a factory defect in all TRDOR 8.75" rear diff housings that causes harmonic vibrations. Strangely not all TRDOR 8.75" trucks exhibit this noise. Mine has a slight whine with the 4.88's and only at 55 mph (same speed as the 3.90's). I also run stock viscosity rear diff fluid but will go to a higher/heaver viscosity at next change. All in all I would take the 4.88's over the stock 3.90's as the performance and drivability is way better than stock.

 

Very tempted to regear before adding a lift or tires. How much are you guys paying out the door? nitro gears with the added rem polish and oil is like 1800 I believe. It seems pretty high.

 

I never REM’d mine. But with gears, shipping to hawaii via FedEx, and install with gear oil, about 1900

 

Paid about $1400 for nitro 4.88 with REMs from a group buy.
Installation was another $1500.

 

Where did you have the installation done?

 

Rear End Specialties Santa Clara, CA

 

Thank you.

 

You're visiting the Bay?

 

No. I have a friend who has been talking about doing this for his 2018 Tacoma, but hasn't because he's not found a reliable shop who will do it. He lives in California, so having a recommendation is very helpful--I'll pass it along to him.

I'm buying a 2019 TRD OR DCLB, and am going to get this done. I'm in Oregon, and am looking for a shop as well (I don't have the skills, tools, or shop space.)

 

Ahh gotcha! RES has been in business for a very long time. They do perfect work so your friend should be fine.

 

Update on my 4.88's. Swapped out the noisy REM polished 4.88's for a set of standard Nitro's followed the break in cycle. The gear whine is barely noticeable around 55-60 and a bit on deceleration, love the gears even more now.

 

Mmmm I thought REM polished made the gears more smooth, any idea why they were loud?

 

ECGS said the REM polished gears have been noisy in previous installs as well as mine. Not sure exactly why. With the REM gears installed, I had so much noise at highway speeds, the radio couldn't drown it out. Constant loud harmonic or hum. I installed sound dampening material to the floor and behind rear seat. That helped, but eventually it drove me nuts. I called ECGS to swap out the gears to standard 4.88's and now I have very, very mild gear noise between 55-65 mph. I can listen to the radio at minimal volume levels again.

 

Check with @SpeySquatch = I think he is up your way and just got 4.88's installed.