Will the Volspeed 4 work if fitted with a Kiox display??

[Zrt1200]

Has anyone fitted a Kiox display after installing Volspeed 4 or installed a Volspeed 4 with a Kiox display??

 

[Greg Watts]

Has anyone fitted a Kiox display after installing Volspeed 4 or installed a Volspeed 4 with a Kiox display??

Short answer: yes, it will. Your Trek Rail 7 Gen 2 runs Bosch Gen 4 (non-Smart System), and the Volspeed V4 is compatible with the Kiox display, along with Purion, Intuvia, and Nyon.

Volspeed's own site lists it as suitable for "all Active Line, Active Line Plus, Performance Line and Performance Line CX drives from model year 2014 with the displays Purion, Intuvia, Kiox and Nyon."

The key distinction to be aware of is that this means the original Kiox (the stem-mounted one), not the Kiox 300 or Kiox 400C.

The V4 manual explicitly shows the Kiox 300, Kiox 500, and Smart System components as incompatible. Since you're on Gen 4 non-Smart, you'd be swapping to the original Kiox anyway, so that shouldn't be an issue.

There's even a real-world write-up from someone who did exactly this swap (Purion to Kiox on a non-Smart Bosch bike with a V4 already fitted).

"My current Volspeed tuning box supports the standard Kiox perfectly", and they didn't need to touch the V4 at all during the display swap.

EDIT: Removed the incorrect reference to the Kiox 400C as an incompatible display — the V4 manual lists the Kiox 300 and Kiox 500 as incompatible (along with Smart System components), not the Kiox 400C. Only the original Kiox works with the V4 on Gen 4 non-Smart systems. Thanks @Zrt1200 for the heads up.

 

[Zrt1200]

Short answer: yes, it will. Your Trek Rail 7 Gen 2 runs Bosch Gen 4 (non-Smart System), and the Volspeed V4 is compatible with the Kiox display, along with Purion, Intuvia, and Nyon.

Volspeed's own site lists it as suitable for "all Active Line, Active Line Plus, Performance Line and Performance Line CX drives from model year 2014 with the displays Purion, Intuvia, Kiox and Nyon."

The key distinction to be aware of is that this means the original Kiox (the stem-mounted one), not the Kiox 300 or Kiox 400C.

The V4 manual explicitly shows the Kiox 300, Kiox 500, and Smart System components as incompatible. Since you're on Gen 4 non-Smart, you'd be swapping to the original Kiox anyway, so that shouldn't be an issue.

There's even a real-world write-up from someone who did exactly this swap (Purion to Kiox on a non-Smart Bosch bike with a V4 already fitted).

"My current Volspeed tuning box supports the standard Kiox perfectly", and they didn't need to touch the V4 at all during the display swap.

Can you share the link and what Post number where someone did (a real world write up) on doing this??

 

[Greg Watts]

Can you share the link and what Post number where someone did (a real world write up) on doing this??

I owe you an apology on that one. The write-up I referenced wasn't from a thread on this forum, it was from an external blog. I should have made that clear instead of implying it was something you could find here. That's on me.

The source was a blog post on mostlybollox.com where someone with a Cannondale Canvas Neo running a Bosch Performance Line motor installed a Volspeed V4 and then later swapped from Purion to Kiox.

With the motor cover removed, the V4 tuning box was visible tucked up inside the frame, and with the old display unit completely removed, they installed the new Kiox

without needing to touch the V4 at all. The key takeaway for your Trek Rail 7 Gen 2 is that the V4 is listed as suitable for all Performance Line CX drives from model year 2014 with the Kiox display.

The V4 sits on the motor's speed sensor connection and doesn't care which compatible display you're running, so swapping from Purion to Kiox shouldn't require any changes to the V4 wiring. Just be aware, as @Peaky Rider noted, that the Kiox 200 (BU1330) fits as plug and play but the old display connection lead must be removed and a new one threaded through the frame to the motor.