2020 AT4 - 2.5" BDS Lift & Fox Shocks

IHaveATruckToo · August 15, 2021

Does the BDS lift void your warranty? My local dealership is trying to talk me out of lifting my new AT4… help meh

Wyatt Bilodeau · May 13, 2022

In case anyone was wondering.. I’ve got a 21 AT4 with the installed 2.5” BDS Coilover lift. I was able to fit 35/12.5 on my stock 20” Carbonpro wheels. The only spot they rubbed was that one triangular piece of plastic that sticks out into the wheel well from the bumper skirt. I just trimmed it off, and I have no rubbing issues anymore. I also had the Recoil Traction Bars installed because I live on a pretty rough dirt road, and I love them! First picture is with the track bars. Second is just the lift installed.

Edited May 13, 2022 by Wyatt Bilodeau

Ckhris · July 1, 2022

Wyatt, with the E rated tire and the shocks how much stiffer is the ride? I dont want to hit railroad tracks and be bouncing sideways.

Josh021 · March 2, 2023

On 9/30/2020 at 9:31 PM, Supercup said:

I have a 2020 AT4 Carbon Pro and added a BDS 2.5" lift kit with 2.5" Fox DSC coilover front shocks, Fox 2.0 rear shocks and 3" rear lift block (replacing factory block). I had a 2019 AT4 Carbon Pro with Ready Lift SST 2" level kit and RL UCA's. The look is similar, but the performance is in another league with the BDS kit. Most significant improvement is the "angle" of the front axels - I have posted photos below of the RL level so you can see the angles at the CV boots, pretty extreme, versus the BDS lift kit with drop bracket, which leaves the axel basically level - alllowing a lot more flexibility in articulation.

Ride quailty is excellent, but it is stiffer than the stock Rancho momo tube shocks, which are quite plush. The stock Ranchos are good for about 5 mph in any kind of offroad terrain, the BDS is much more compliant and offers far better offroad performance. With the DSC adjustment of the front shocks I was able to smooth out the ride to be similar to stock, very comfortable, yet more composed and in control. A litte more steering effort with the BDS as well - both on same wheel and tire package.

Only issue I ran into is I have 18" x 9' Method NV wheels with 18 mm offset (5.75" backspacing) and they interfered with the BDS tie rod. They worked ok with RL SST kit - but were very close to the upper UCA but worked. In both cases the Method 18" x 9" NV's with -12 mm offset (4.5" of back spacing) would be a better choice. I will switch to those once I am ready for larger tires, for now due to wheel issues I stayed with stock 275/65/18. With RL SST kit there was maybe 5/8" of room to the tire, so very limited room for a larger tire, whiich 18mm offset wheels (stock 18's are 26mm). The BDS kit has a ton of inborn room - a few inches or more, so no issues there. With BDS and 18mm wheels slight rubbing when backing up at full lock.

Here are some comparison photos.

2019 AT4 Carbon Pro - Ready Lift 2" Level

2020 BDS 2.5" Lift Kit

2019 RL SST 2" Level - CV axel Angles - level ground

2020 BDS 2.5" lift Kit - CV axles "level"

Not sure who installed your sst but my cvs look better than yours with the bds.

Campver8 · September 5, 2023

On 5/13/2022 at 6:49 AM, Wyatt Bilodeau said:

In case anyone was wondering.. I’ve got a 21 AT4 with the installed 2.5” BDS Coilover lift. I was able to fit 35/12.5 on my stock 20” Carbonpro wheels. The only spot they rubbed was that one triangular piece of plastic that sticks out into the wheel well from the bumper skirt. I just trimmed it off, and I have no rubbing issues anymore. I also had the Recoil Traction Bars installed because I live on a pretty rough dirt road, and I love them! First picture is with the track bars. Second is just the lift installed.

Did you have to run spacers on your stock wheels? If so which ones and how do you feel about them? I want to keep my stock wheels. I have 33” on there now and will eventually move up to 35s. I want to get this setup. Thanks

Edited September 5, 2023 by Campver8