17 Jun 2019

Vision Tech Guide: the Plasma Electrolytic Oxidation rim treatment.

Plasma electrolytic oxidation (PEO) is an electrochemical surface treatment process for generating oxide coatings on metals. It is similar to anodizing, but it employs higher potentials, so that discharges occur and the resulting plasma modifies the structure of the oxide layer. 
A wide range of substrate alloys can be coated, including all wrought aluminum alloys and most cast alloys, although high levels of silicon can reduce coating quality.  
Surface coatings formed through plasma electrolytic oxidation can offer 2-4x more hardness than hard anodizing or steel, and provide increased wear resistance. The combination of these qualities and the comprehensiveness of protection has made PEO a breakthrough surface engineering innovation.
The TriMax KB range is the first Vision wheelset to use a Plasma Electrolytic Oxidation (PEO) surface treatment on the rim. On the braking surface, this ceramic oxide coating both improves wet braking performance and is extremely wear resistant, allowing your rims to remain streak-free and stay looking fresh even after thousands of kilometers of use.

Vision’s TriMax KB range is composed by TriMax 25 KB, TriMax 30 KB and TriMax 35 KB, the first two tubeless ready. They consist in lightweight combination alloy rim wheelsets with great quality price-ratio, and you are in for a smooth ride no matter if you are on the flats or in the hills, or anywhere in between. Thanks to their versatility, many Vision sponsored pro riders and triathletes have chosen TriMax KB range for theri great training experience as well as top racing performance.

. Chemical stability: Dense Inert ceramic structure for an excellent chemical stability and corrosion protection.
. Wear resistance: extreme hardness, excellent adhesion and high compliance give superior wear protection against most wear counterparts.
. Strain tolerance

Here the TriMax 30 KB review on October 2018 on UK magazine Road.cc

“These are probably the most unobtrusive wheels I've ever tested – and that's a very good thing. For a start, they're straight and true, and the spoke tension is decent, which will help them stay that way. They're laterally stiff enough that I couldn't get them to rub on the brakes, even though I run the blocks close to the rim so they come on at a touch. They're unaffected by sidewinds because they're only 30mm deep, enough to give them a slight aero advantage over old-school square rims, but not enough to affect handling when it's windy. Even the freewheel noise is relatively quiet. Very easy wheels to live with, then.”

Discover more:

And now watch Paolo Bettini's TriMax KB video presentation:


  • TriMax KB range, used by Vision sponsored pro riders and triathletes
  • PEO treatment benefits
  • TriMax 35 KB with PEO rim surface treatment