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Item # RCF002X

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  • Black, 50mm ($39.95)
  • Black, 60mm ($39.95)
  • Black, 70mm ($39.95)
  • Black, 80mm ($39.95)
  • Black, 90mm ($39.95)
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Item # RCF002X


If you're keen on importing the new gravity standard of 35mm bars to your XC or all-mountain rig, then Face Face's Aeffect 35 Stem has you covered. Its 6061 aluminum body is lightweight and designed for single-crown forks, but it lets you replace your oversized 31.8mm bar with an over-oversized 35mm model. The overall expansion of bar and stem does come with a slight weight gain, but we think the added stiffness and reliability of a reinforced cockpit is worth the few extra grams — especially considering the wider, 750mm bars we're seeing on XC and all-mountain machines.

Tech Specs

6061 T6 aluminum
50mm, 60mm, 70mm, 80mm, 90mm
Clamp Diameter:
Steer Tube Diameter:
Bar Attachment:
4-bolt clamp
Claimed Weight:
[60mm] 155 g
Recommended Use:
mountain bike
Manufacturer Warranty:
1 year

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Will get the job done

  • Familiarity: I returned this product before using it

This stem ended up not being right for my build however it looked like a great stem for the value! I went in another direction but would consider this stem for a different bike than the SB6 i was building.

Great Value Stem

  • Familiarity: I've put it through the wringer

All my bars have swapped to 35mm clamps and this is my go to for a great price stem. I personally go with a 50mm or shorter on all my bikes but the options here go all the way up to 90mm so everyone is happy

Value added for more reach

  • Familiarity: I've used it several times

The stock stems on many of today's on-trend geometry bikes are a bit short for my liking. Therefore I swapped out my 50mm for a 70mm and feel right at home on my SC 5010. The 35mm clamp size is here to stay and the bars are stiffer because of it. This is an economic option for a stem and stays true to RF quality.