4L80E Transmission 4WD, 4L80E 4x4, 4L80-E, 4L80, Heavy Duty 4L80E, Rebuild 4L80E, Monster 4L80E Transmission, 4L80E Free Shipping
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Custom Built Monster 4L80E Transmission Heavy Duty 4WD 4x4 with Free Transmission Fluid
Custom Built Monster 4L80E Transmission Heavy Duty 4WD 4x4 with Free Transmission Fluid

Custom Built Monster 4L80E Transmission Heavy Duty 4WD 4x4 with Free Transmission Fluid


Mega Monster Transmissions Engineered to Dominate, the 4L80E Mega Monster transmission is tough enough to withstand the rigors of even the toughest street machines delivering tire-spinning shifts race after race. Now Includes the best Full Synthetic Transmission Fluid on the Market provided by Burn Rubber Brewing Co. For Free! INCLUDED FREE - No Fault Warranty A 1-time no questions asked repair or replacement. Covers Shipping, Freight claims, Installation errors, overheating and more!

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Questions? Call Us 800-708-0087

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Torque Converter
Torque Converter Upgrades
Shift Firmness
Pan Style
Case Type
Neutral Safety Switch
Coolant Line Fitting Location
Core and Warranty Options (Please Select One)
A) We'll pick up and Build Your Original Core - 3 Yr Warranty activated when order ships (+$200.00)
B) Return your core using our Core Return Service within 30 days of shipment - 3 Yr Warranty activated when core received (+$375.00)
C) No Core will be returned - Pay Core Fee to Activate 3 Yr Warranty (+$500.00)
Note: A core deposit is required on this product please choose an option below
Case Color (shades may vary*)
Warranty Information (Check Box to Acknowledge)
All warranties are contingent upon core returns and/or fees. If the Transmission & Converter cores are not returned within 30 days or a core fee is not paid I am opting out of any warranty coverage.
White Glove WOWanty Upgrade
Popular Accessories (These have been Discounted for your transmission package!)
Free 18 Qts. of Burn Rubber Brewery Premium Synthetic Trans Fluid
Torque Converter Bolts (+$12.92)
Transmission Flush - Dr. Tranny Kooler Kleen (+$19.98)
Trans Cooler Kit #1403 (+$49.95)
Give Me A Name
Warranty Upgrade
Included FREE - No Fault Warranty
Time commitments may vary as this is a custom built transmission

Mega Monster Transmissions
Engineered to Dominate, the 4L80E Mega Monster transmission is tough enough to withstand the rigors of even the toughest street machines delivering tire-spinning shifts race after race. It is ideal for vehicles powered by engines producing up to 550 horsepower using pump gasoline. Equipped with a Manual/Automatic valve body, most units allow you to manually shift the vehicle into each gear change or, by placing it in the drive position, remain fully automatic. In either mode, you get a racetrack shift that bangs through the gears giving you all the right to say "Eat My Shift!". When you use the manual gear selection feature, the Mega Monster upshifts and downshifts when you move the shift lever, please note, in order to have complete control of the RPM shift timing you must upgrade to a full manual valvebody. When you select the normal drive position, the transmission retains its firm, automatic shifts for the ease of driving you look for in an automatic transmission.

The Mega Monster Transmission features: the latest technology in our industry with only the best internal components for increased strength, dependable performance and monster torque capacity. All Monster transmissions are custom made in the USA and quality checked to ensure your peace of mind. For the system to operate properly, all throttle linkage, vacuum lines and kick-down components must be connected and adjusted properly.

    & much more!

*Special Note: If you are planning a direct transmission swap it is recommended to re-use your existing extension-housing and VSS (Vehicle Speed Sensor) for your new unit. This does not come equipped with a new VSS (Vehicle Speed Sensor). Certain vehicle specific extension-housings may not be available with this unit. In most cases, you will be required to swap your original extension-housing (this will NOT void your warranty). Please Contact Us to purchase a proper VSS (Vehicle Speed Sensor) for your application or if you are unsure if your extension-housing will need to be reused.

Got a 4L80E transmission from Monster, thing came in great, packaged well. Very clean, actually kind of cool looking. Went in perfectly, everything hooked right up like it's supposed to, everything was good. Packaging was excellent and let me tell you pulled about 8500 lbs with my Suburban 2500 last weekend, gonna do it again this weekend. And no problems, smooth power, good crisp shifts. Everything's great, really appreciate it guys. Thank you much.
Verified Buyer: 
Everything that I wanted
Hey, there. i just wanted to talk about my 2003 GMC yukon XL that I recently bought earlier this year. It was running great until about 500 miles and my transmission started slipping, so i've been looking around and I heard about Monster transmission, and that they have very great service. I gave them a call and ordered myself a transmission, it came in 3 weeks. The transmission is great, it's flawless, shifts perfectly, everything that I wanted. i couldn't ask for anything else. here's a video of my car taking off, I hope you guys enjoy it. 
Verified Buyer: 
4L80E 4X4 HD
I went for the factory shift kit because its just my DD but it shifts better than my old one ever did. The best part is it has reverse, which my old one did not... I like the fact that they test it before they ship it. Very reassuring AND it has some residual ATF in it saving a little money from an already expensive project. Id do it the same if I had to and definately reccomend Monster trans. My only complaint is the lead time, 3~4 weeks would've sucked if I didn't have forward gears left. If my trans was a total loss I may have gone elsewhere to get up and running sooner. Ill put 5 stars but should be 4 because of lead time. Overall a good experience.
Verified Buyer: 
I haven''t had a single problem or leak.
I installed it into my 1991 RV 1 ton van. It''s been about 3 months now and, to this day, I haven''t had a single problem or leak. As far as needed any information, Monster Transmission has been very polite in providing me with anything I needed to know about my transmission. The day I needed to send my core back, I just called them and they came and picked it up that same day. It was awesome. There was no core charge on my purchase. It was just right to the point. I also bout a Monster Transmission kit for a 700R SS. It is an extraordinary kit and it''s very simple for me. I didn''t have not one problem with it. With that being said, if you''re interested in a transmission, I would like to recommend Monster Transmission. I had no problems with the delivery or pickup. I am a Monster Transmission customer for life!
Verified Buyer: 
I had ordered a 4L80 a few months ago. And I'm currently in the process of installing it. I had a few flex plate issues that I called a few months ago on. They helped me figure that out and I still have a flex plate issue I ran into again. But I called and Wyatt seemed to be very helpful in helping me figure it out and everything should be good to go. So again, thank you very much and I look forward to using your transmission and seeing how it works. Thank you.
Verified Buyer: 
Heavy Duty 4l80E Transmission 4WD. From the moment I called until I received it, I was helped very well. I've been very satisfied. Since I've put the transmission in I've put about 600 miles on it. Shifts excellent. Everything works as it should. Very pleased with it and I appreciate all the help that I got. Thank you.
Verified Buyer: 
thanks Tom!
Still waiting on mine so don't know yet. All I can say is that I got a call from Tom that works there. He asked me to look and see if my transmission had a bolt dead center on the bell housing. I don't know I'm disabled I looked & couldn't see. So I called the Chevrolet service department then the parts department finally the told me no I called Tom back he told me you need to have a mechanic look so I did the mechanic said there is a top dead center bolt hole on the bell housing.but no bolt in it. I had a local transm ission shop build it before he must have left out one. GO FIGURE!!! Now you see one of the reasons I called Monster transmission. You can't trust nobody!!! So I hope Tom gets me a good transmission built so I can flaunt it around & tell everyone else who I got it from. I will tell you I am worried. I got to have my truck running all the time because I can't walk good. --So Thanks Tom for calling me to make sure. I do worry a lot.
Verified Buyer: 
It weight about 5600 pounds and this transmission just absolutely sets it off.
Thank you for making a fantastic transmission! I had a young man who is pretty much an expert on all of it look at it. He said it was the easiest transmission he has ever put it. My truck is a 1966 K10 Fleetside with Factory 4WD and A/C. It is number 620 that came off that line in St. Louis on February 1966. It is a sweet machine and I wanted the best transmission for what I consider to be the best truck. Eventually I''m hoping to put a 383 Stroker in it and that''s why I ended up buying a heavy duty tranny. We really like it. We are in the tweaking stage right now, getting everything all tweaked out on it. The truck is like a minature tank. It weight about 5600 pounds and this transmission just absolutely sets it off. It has brought the old boy back to life again. It had 30,000 miles on it when I bought it and it''s probably going to be the last pickup I ever buy. And with this transmission I bought from you guys, I''m guessing it''s probably going to be in it until I''m gone. Thanks a bunch!
Verified Buyer: 
Aaron was very easy to talk to on the phone and had all the right questions for me to get the build going for my LS Disco project. Thanks so much
Verified Buyer: 
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