Wireless and affordable – the TranzX EDP01 is one of the most budget-friendly wireless dropper posts available on the market. But how does it fare in terms of value for money? Does the EDP01 perform reliably or does it call for compromises? And how does it stack up against the competition?

TranzX EDP01 | Price: € 500 | Weight (incl. remote): 875 g (200 mm, Ø 34.9 mm) | Travel: 150–200 mm | Manufacturer’s Website

Founded in 1986 in Taiwan, TranzX launched their first wireless dropper post in 2017. Alongside dropper posts, the manufacturer also produces stems, handlebars, and other bike components. The TranzX EDP01 is the only wireless model in their dropper range. Our test model offers 200 mm of travel and retails at € 500, which makes it the most affordable wireless dropper post in the entire test field. A charging case and remote are included in the price – you’ll just need a USB power adapter. For comparison’s sake, the FOX Transfer Neo costs € 1,319, while the RockShox Reverb AXS comes with a € 745 price tag.

You can find an overview of this comparison test here: The best dropper post.

The TranzX EDP01 name alone gives off a bit of a Star Wars vibe – although it can’t talk to us like C3PO. What it does offer is a wide range of available diameters, (30.9 mm, 31.6 mm, and 34.9 mm), along with travel options of 150 mm, 170 mm, and 200 mm.

With an insertion depth of just 288 mm, the TranzX is compact compared to other wireless models in this test field, like the Kind Shock LEV Circuit (320 mm) and the FOX Transfer Neo (315 mm) – a big advantage for bikes with smaller frames and shallow insertion depth.

The TranzX EDP01’s battery is positioned directly on the head of the post, which results in a stack height of 57 mm. This is less than the RockShox Reverb AXS (65 mm), though slightly more than the FOX Transfer Neo (46 mm) and the Kind Shock LEV Circuit (51 mm).

An LED at the head of the post indicates the battery charge status. When it blinks red, the battery has enough charge for around 500 actuations. Once fully drained, the 240 mAh battery takes approximately 80 minutes to recharge completely. Next to the LED is a pairing button that also allows for manual activation. Pressing the button opens the internal valve, while releasing it closes it. This feature is only needed if the included remote – powered by a coin cell battery – shouldn’t work.

For transport, it’s crucial to remove the battery from the dropper post to prevent it from discharging via the Shake-to-Wake function.

Internally, the TranzX EDP01 features an adjustable air cartridge, with a Schrader valve at the base allowing you to adjust the dropper’s extension speed. The pressure can be set up to a maximum of 300 PSI. While TranzX don’t provide a service guide on their website, the dropper post can be disassembled with some DIY skills and without the need for special tools.

Simple and straightforward: battery integration directly on by the saddle.

Installation is the same as with all other wireless dropper posts: apply grease to the tube and slide it in. Mounting the saddle on the TranzX EDP01 is just as easy, using a 5 mm Allen bolt and two clamping guides, which is far more practical than traditional two-bolt clamps. A second bolt at the front of the dropper head allows you to adjust the saddle tilt quickly and easily. The TranzX EDP01 remote comes with a standard clamp and is easily mounted on the handlebars. For those who prefer a cleaner setup, it’s also compatible with Matchmaker and I-SPEC adapters.

Looks aren’t everything: a bit rough around the edges in terms of finish – but it gets the job done.
Well, look at that! A Schrader valve.

When the remote is activated, the dropper moves up and down reliably, with no noticeable signal delay between the remote and dropper post. However, the thumb pad on the remote doesn’t provide the most premium haptic feedback, and the satisfying, helpful click sound is missing.

In terms of extension speed, even at maximum pressure, the TranzX EDP01 doesn’t match the performance of the top-tier models in this test, like the FOX Transfer Neo and RockShox Reverb AXS. Ambitious riders who need their dropper ready instantly for quick transitions from downhill to uphill might find this disappointing. However, for hobby riders seeking a wireless and affordable dropper with a generous 200 mm of travel, the TranzX EDP01 is still a solid option.

During the testing period, the dropper showed no excessive play and performed flawlessly in everyday use, as long as the battery had power. For us, the battery consistently lasted a full day of trail riding and even survived a weekend trip to the Alsace – though it ran out of juice by Monday. In this regard, the TranzX falls slightly behind its wireless competitors. However, if you have the option to charge it daily, this shouldn’t be a deal breaker.

Conclusions about the TranzX EDP01 dropper post

In direct comparison with the other wireless dropper posts in this test, the TranzX EDP01 stands out as an affordable option. It excels with easy installation and the hassle-free saddle mount, saving you time and frustration. However, the package also comes with a few drawbacks, like the slightly shorter battery life, slower extension speed, and rudimentary remote. For those who can overlook these minor flaws, the TranzX EDP01 offers a solid and reliable wireless dropper post with a compact insertion depth and a generous 200 mm of travel.

Tops

  • Great price for a wireless dropper post
  • Compact insertion depth
  • Easy installation

Flops

  • Slow extension speed
  • No tactile feedback from the remote

For more information, visit TranzX.com


The test field

You can find an overview of this comparison test here: The best dropper post.

All dropper posts in test: BikeYoke REVIVE 3.0 | Crankbrothers Highline 11 | FOX Transfer Factory | FOX Transfer Neo Factory | FOX Transfer SL Factory | FSA Flowtron Dropper Post | Kind Shock LEV Circuit | LIMOTEC H1 | OneUp V3 | PNW Loam Dropper | RockShox Reverb AXS | SDG TELLIS V2 | TranzX EDP01 | Turnon Bunker | Wolf Tooth Resolve rev2


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Words: Robin Ulbrich Photos: Peter Walker