I really like the weight stack and the rig but I think I’m starting to be stronger then the whole weight stack when doing lat pull down, lol. Kinda wish we were able to add even more stacks weights to it.
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M4-2.0 Selectorized Weight Stack Upgrade Kit - 260 lb
Upgrade your M4-2.0 Ultra/Standard with this Weight Stack Upgrade Kit. Featuring 13 weight plates per side plus 1 weight holder, it delivers a total of up to 886 lb of smooth, fully adjustable resistance.
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M4-2.0 Selectorized Weight Stack Upgrade Kit - 260 lb
Sale price$899.99
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Instant Power Switch: Weights Changed in 10 Seconds Flat
This is the ultimate tool for beating inertia. Instead of fumbling with heavy plates, you just pull the pin and pick your weight. That’s it! We’re talking about 10-second weight swaps that let you maintain killer momentum for drop sets and keep your head fully in the training flow state. By taking the chore out of lifting, we lower the mental barrier to the floor. You’ll find it easier than ever to show up, skip the excuses, and build the consistent, confident fitness habit you’ve always wanted.
PRODUCT DIMENSIONS
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Overall Dimensions11.7" (L) x 17.7" (W) x 15.5" (H)
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Total Weight Stack130 lb
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Increment10 lb per plate
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MaterialSteel
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Length of Weight Horn4.6"
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Self Weight of Weight Holder10 lb
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Weight Capacity Of Weight Holder310 lb(155 lb per side)
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Number of Package4
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CompatibilityOnly for M4-2.0 Ultra/Standard
PRODUCT OVERVIEW
M4-2.0 Ultra/Standard Weight Stack Upgrade Kit
Designed exclusively for existing M4-2.0 Ultra/Standard owners who wish to upgrade their unit to the Elite version, this Weight Upgrade Kit elevates your rack into a more powerful, flexible, and fully refined training system. Built specifically for the M4-2.0 Ultra/Standard frame and pulley path, this kit is not compatible with any other racks or trainers.
Dual-Stage Resistance, One Seamless System
This upgrade combines a 130 lb selectorized weight stack with a stainless steel add-on weight holder, giving you both precision control and heavy-load potential in one clean setup.
- 130 lb Weight Stack (10 lb increments)
Featuring 13 plates at 10 lb per increment, the stack allows fast, accurate resistance changes with a simple pin—ideal for functional training, isolation work, and progressive overload.
- Weight Holder
Each side supports up to 155 lb of additional plates, unlocking higher resistance for heavy pulls, presses, and lower-body movements when you’re ready to push beyond the stack. Built to grow with you, this setup accommodates users from beginner to advanced fitness levels.
Once you experience stack-based training, going back to constant plate swapping simply doesn’t make sense.
4 PACKAGES INCLUDED:
- 26 × 10 lb Weight stack plates (260 lb total)
- 2 × Weight holders
- 2 × Weight selector pins and Insert lifting rods
- 1 × Installation Manual
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Overall Dimensions11.7" (L) x 17.7" (W) x 15.5" (H)
-
Total Weight Stack130 lb
-
Increment10 lb per plate
-
MaterialSteel
-
Length of Weight Horn4.6"
-
Self Weight of Weight Holder10 lb
-
Weight Capacity Of Weight Holder310 lb(155 lb per side)
-
Number of Package4
-
CompatibilityOnly for M4-2.0 Ultra/Standard
M4-2.0 Ultra/Standard Weight Stack Upgrade Kit
Designed exclusively for existing M4-2.0 Ultra/Standard owners who wish to upgrade their unit to the Elite version, this Weight Upgrade Kit elevates your rack into a more powerful, flexible, and fully refined training system. Built specifically for the M4-2.0 Ultra/Standard frame and pulley path, this kit is not compatible with any other racks or trainers.
Dual-Stage Resistance, One Seamless System
This upgrade combines a 130 lb selectorized weight stack with a stainless steel add-on weight holder, giving you both precision control and heavy-load potential in one clean setup.
- 130 lb Weight Stack (10 lb increments)
Featuring 13 plates at 10 lb per increment, the stack allows fast, accurate resistance changes with a simple pin—ideal for functional training, isolation work, and progressive overload.
- Weight Holder
Each side supports up to 155 lb of additional plates, unlocking higher resistance for heavy pulls, presses, and lower-body movements when you’re ready to push beyond the stack. Built to grow with you, this setup accommodates users from beginner to advanced fitness levels.
Once you experience stack-based training, going back to constant plate swapping simply doesn’t make sense.
4 PACKAGES INCLUDED:
- 26 × 10 lb Weight stack plates (260 lb total)
- 2 × Weight holders
- 2 × Weight selector pins and Insert lifting rods
- 1 × Installation Manual
Customer Reviews
Overall rating: 4.7 / 5 from 9 reviews.
Fairly easy to install and the design is straight forward. Still enough room to fit 180lbs of bumper plates on the horns if needed. Also enjoyable that it frees up some room inside with the shorter horns. 130lbs on a 2:1 cable system is enough for almost any 1-handed exercise. Would be nice if they sold an add-on with an additional 4 plates per side, though.
Shipping was fast and product was expected. I have the original M4 not the 2.0 so you have to do some modifications to get this to work. First you need to remove all the plastic guides from each plate, and I have a 3d printer so I just made new ones as the plastic holes are too small. Then you need to buy a pulley and a bolt as they assume you already have it. Then you don’t have to do this but cut the cable and crimp a new end to the cable to make it shorter as it will be too long and will hang. I used a hand hydrolic crimper I already had and it worked like a charm. Not sure why they wouldn’t just sell a kit to let the non 2.0 racks use this as they could make some money on that too. Otherwise it’s a great product with little installation if you have the 2.0 already.
Make sure you have tge M4 2.0 or youll have to do some work to get it to work with your M4 1.0. I have a 3d printer and bought the pulley wheel and bolt from amazon. Also you dont have to but you can cut your cable down and resize it as it will be a little but longer. Otherwise the plates are amazing addon.
Fit was perfect!
Amazing addition to my m4 2.0 ultra set that I got a few months ago. Weight selection is seamless, cables move great, would definitely recommend. Only critique would be for the stickers, the first sticker needs a bigger hole to accommodate for the bolts.
Great experience. They asked for clarification before buying. Great service.
I have also run into the same issue as Vince D. I read his review on how he adapted the weight plates to make them work but I need to know how to shorten the cable that was already on the machine to make the adaptation work. Since the weight stacks sit up higher than the original set up, the cable is way too long and I'm not sure how to shorten it. I figured I would need to cut off the end piece, cut the cable to the length I need, then reistall the end piece that bolts to he machine. Please advise. Thank you.
I really like the add-on weight stack kit. Before ordering it, I checked my Amazon order history, which indicated that I had originally purchased the M4-2.0. Unfortunately, that turned out not to be the case—I actually have the M4-1.0. To make the kit work, I had to drill out the plastic weight stack guides so they would fit the M4-1.0 guide tubes. I also had to purchase pulleys and adapt them to the weight stack rods, and I ended up reusing the original cables. Despite the additional modifications, I was able to get everything working properly. The company provided a $100 credit toward my order, which I appreciated and helped offset the extra effort and parts required. At the end of the day, I was able to make the kit work and am happy with the final result.