The Tranz-X EDP01 Wireless Dropper Post provides hassle-free installation with quick and crisp actuation.
The dropper post feels like a premium product, although the remote can’t quite match it, with the vague-feeling lever having room for improvement.
The Tranz-X EDP01 is the dropper post brand's first electronically actuated model and is priced toward the bottom end of the wireless dropper market at $499.
Tranz-X EDP01 Wireless Dropper Post specifications
Included in the price is the wireless remote that attaches to the bar using a C-clamp.
Aimed at trail and enduro riding, the post is available with 150mm, 170mm or 200mm of travel, with the latter being a longer offering than the RockShox Reverb AXS.
It comes in 30.9mm and 31.6mm diameters, and my 200mm, 31.6mm test unit topped the scales at 767g for the post and 67g for the remote.
Thanks to its wireless nature, the EDP01 can fit in most seat tubes, depending on the diameter and if there are any obstructions in the seat tube, such as bottle cage bolts.
The post and remote use Bluetooth 5.0 wireless connectivity to communicate with LED lights on each unit, indicating when they are paired.
Unlike other wireless dropper posts, the EDP01 is only water resistant, with the post holding IPX 66 certification, which loosely means it can protect against powerful water jets but can’t be submerged.
A rechargeable lithium-ion battery is used to power the dropper, which sits inside the housing on the rear of the post.
This is charged using a separate housing that encompasses the whole battery and features a USB-C port to connect to the mains.
The remote is powered by a CR2032 battery and is not rechargeable.
A sealed, adjustable air cartridge is used in the post, which Tranz-X says can be replaced in under 10 minutes.
Tranz-X EDP01 Wireless Dropper Post performance
Installation and setup
Thanks to its wireless design, the EDP01 is simple to install. The post slid into my frame with ease and the remote tightened to the bar with little fuss.
The post paired to the remote without fault, with the post needing to be moved a little to be woken up from its sleep state.
Attaching the saddle and altering the pitch is also simple, with the side clamp easy to access, requiring no fiddling under the saddle as is the case with some two-bolt designs.
Installing the battery into the back of the post isn’t as easy as some other wireless dropper posts, because the battery compartment is fully enclosed in the head of the post.
On the trail
I found the EDP01 Wireless Dropper quick to return, with the stock cartridge tune offering plenty of thud when the post reached full extension.
However, it feels slower to drop than other wireless dropper posts I have tested, with a short lag between pressing the lever on the remote and the sound servo activating in the post.
This isn’t too noticeable when riding, but it isn’t helped by the lever’s lack of tactility.
Unlike the remotes on the RockShox Reverb AXS and KS Lev Circuit, the EDP01’s unit doesn’t have a click to the lever, making for a less positive feel than some of its rivals.
The battery lasted well during my testing, although I took the advice of other users and removed it from the post after every ride to avoid the sleep mode draining the battery.
I noticed very little play in the junction between the top and bottom of the post, with the overall construction of the EDP01 very impressive considering the price.
How we tested | Dropper posts
For this test, Nick took to his local forest to use the posts on undulating terrain trails where droppers prove most useful and are actuated more often.
Weather ranged from dry and sunny to cold and frankly miserable days, where dropper post imperfections can quickly frustrate weary heads and remotes prove difficult to use in the cold.
The droppers were all used in a medium-sized enduro bike, with inner and outer cables replaced for each post to ensure accuracy and repeatability.
Each post was set to a saddle height with full leg extension, and the bars were cleaned before installing the remote to avoid slippage.
Droppers on test
- Magura Vyron MDS-V3
- X-Fusion Manic
- OneUp V3 Dropper Post
- Tranz-X EDP01
- PNW Loam Dropper Post
- Crankbrothers Highline 11 Dropper
- RockShox Reverb AXS
- KS Vantage
- KS Lev Circuit
Tranz-X EDP01 Wireless Dropper Post bottom line
Tranz-X’s first stab at a wireless dropper post is very commendable. The post offers a premium feel with all the benefits of wireless simplicity.
It doesn’t feel as refined as the Reverb AXS, but it's half the price, so that’s to be expected.
Once you get over the slight delay between the lever and post actuation, the post performs really well and is worth considering if you're looking for a new premium dropper post.
The lack of positive feedback from the remote lets it down slightly, but in operation, it isn’t too noticeable.
Product
| Brand | tranz_x |
| Price | 499.00 USD |
| Weight | 767.0000, GRAM (200mm . 31.6mm) - plus 67g for the remote |
Features
| br_seatpostDiameter | 31_6mm |
| br_remote | Included |
| br_travel | 200.0000 |
| br_travel | MILLIMETER |
