Next Gen Drivetrain, Inc.

For those in the market for the 10 speed valve body kit from Next Gen Drivetrain. I rebuilt my Valve Body last night with the parts supplied by Next Gen. Install was easy although instructions were a tad confusing. They will be revising the instructions to help streamline the install… I test drove the truck and man its an absolute game changer, shifts are alot less hesitant and feel more firm. I recommend this kit for the peace of mind. My main reason for the install was the jolts that was occurring when i shifted from park to reverse and park to drive. It felt like the truck wanted to lung. His kit includes a revised manual valve to reduce the slop from the gear shifter.

Jan 26, 2025 · Morgan Huntley

I am very impressed by Next Gen Drivetrain! The detail just in the packing of the package was very impressive. The nicest box I have ever received. Anyways, the customer service was outstanding! Nate is a super cool dude that knows his stuff. Super stoked with my valve body rebuild kit. Came with easy to read instructions and the install was a breeze. Once I had the valve body apart on my 2020 3500HD it only took an hour or less to install. Put it back together and now it’s like I have a new truck. Best part about it, I have a truck that I can put back to work in days vs waiting several months just to get the same old problematic valve body install by a dealership. You guys at Next Gen killed it! Thank you so much!! 😊

Aug 23, 2024 · Jackson Berglund

Purchased a valve body from them for an 8l90. The valve body came in pretty quick, works great also. The core refund took a little longer to receive than I was hoping for, but it ended up hitting my account. Overall satisfied for the most part!

Feb 06, 2025 · Aaron Rennaker

I have to give a huge shoutout to this company that just saved my ass. Next gen drivetrain! I bought some transmission parts with these guys for a Cummins a while ago but I have an L5P now and I just discovered they design all of their own parts for the 10 speed Allison and they’re the ones who’ve been selling valve bodies and valve body upgrade kits to GM dealerships to get these trucks back on the road. I see all of you guys having trouble with valve bodies and I just bought their kit for them. If you call them, ask for Will. they have these valve bodies with all their billet valves and everything in stock all the time. I can’t recommend them enough!!!!

Jan 14, 2025 · Jeff Story

Excellent products very pleased with my ten speed transmission. Very helpful salesman abd transmission engineer. Highly recommend

Nov 15, 2024 · Ralph Lukas

Bought a transmission for my Dooley put it on had a bad vibration. Had to take it off and resend it to him again fixed the problem figured it would just be my bad luck. I needed another transmission for a 2003 ram ordered the transmission installed it no fourth gear called multiple times sent in the valve body. They went through it sent it back reinstalled it with new valves new wire harness and still does not run and now they will not answer my calls. It’s been over a year truck still doesn’t run spend $6800 on the transmission. They ignore my calls. I had it taken to a mechanic three different mechanic shops and all three said the same thing the transmission was no good need to be rebuilt. I have never even registered the truck. It’s still sitting in my backyard with a brand new transmission in about $17,000 worth of upgrades and other things that I did to it just can’t afford another transmission. They won’t call me back. They won’t fix this transmission. It don’t even have 1 mile on it. It just will not shift into fourth gear so look around. You want the receipt too I could show you the title that is still in the person’s name that I bought it from not in my name and yes, I did call you multiple times. That’s a screenshot of message I sent the owner of next gen and look at the date.my name is Alex I’ll post the receipt if that makes you fell better don’t call me a liar

Apr 27, 2025 · Al Pa

2020 3500 High Country. Installed vavle body upgrade and billet steel shift valve set. Well worth the time and money regardless of recall or not. My mileage is only at 60k if I was over 75k I think I would have just done a whole valve body kit. Nate was super helpful and has a ton of info. Thanks Nate for your knowledge and quality parts.

Apr 08, 2025 · Greg Clark

I wish there were more stars to give this company. Their customer service is top notch! From the first call I made to my last call I made. They are very friendly, knowledgeable and helpful. I was helping my son make the calls because he works all day and they truly went above and beyond to get my son his part so he could get his truck up and running. Definitely a great business to work with and will be back if we need something for his truck

Apr 08, 2025 · Carmen Evans