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Renthal Apex Stem


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  • Black/Gold, 50mm
  • Black/Gold, 31mm

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Apex Stem

Renthal machines the Apex Stem from a solid piece of aluminum, so you know that it's equal to whatever abuse you throw at it on XC drag races or enduro bombing runs. The oversized clamping hardware secures the bar in place with a sort of 240-degree hug, virtually eliminating the targeted stress points that can contribute to bar failure. The Apex also has an artistic side, though, courtesy of its Art Deco styling, so it classes-up your ride even while you're tearing down lines.

  • CNC machined from solid 2014-series aluminum
  • 7075 aluminum clamping hardware
  • Snazzy Art Deco styling
  • Item #REN0025

2014-series aluminum
40 - 90mm
Clamp Diameter
Steer Tube Diameter
Bar Attachment
two-piece, four-bolt face plate
Claimed Weight
[60mm] 4.8oz (136g)

Tech Specs

What do you think about this product?


>Rating: 5

No more creaking with my carbon bars

I've put it through the wringer
True to size
Size Bought

Had a problem with my Raceface Turbine stem creaking with my carbon bars; had applied carbon fiber assembly gel but still they creaked. This stem solved that and with less torque on the bars. Great product!

>Rating: 5

Great Stem

I've put it through the wringer

I like the simplicity of the design, the clean profile, and the light weight. Can't go wrong with one of these! Have been using it for the last 6 months and am perfectly happy with it.

>Rating: 5

31.8 stem doesn't say it anywhere I see?

Assumed this was a 35mm. my mistake. But I don't see it called out anywhere in the spec's

Looks like it is 31.8 from the website:

>Rating: 5

Well Made Stem

I've put it through the wringer

Really nicely made. Looks can be polarizing with its gold-ish faceplate (which btw doesnt really match with anything outright), but its easy to see the quality of the product in the way that it is machined. The tolerances are impressively tight.... to install the bar i actually had to insert the bar by its narrower tapered section and slide it over. The faceplate is also secured by a slightly different system where you tighten the bottom two bolts all the way down then only have to worry about the right torque for the top two bolts.

>Rating: 5

Beautiful Piece of Metal

I've matched this up with Renthal's FatBar. It looks great and works as designed. Very nice craftsmanship@


What size bar is this Renthal apex for? It doesn’t have any bar size. For a 35mm or 31.8?

Hey Cesar, looks like we have the measurements in inches opposed to MM but this stem is for a 31.8mm bar. This is not the oversized 35mm stem option. If that is what you are looking for check out item #REN0029. Thank you for your question!


Is this product intended for 31.8mm handlebars or 35mm?

Looks like it is 31.8 from the website: