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Gemini Propus One-Piece MTB Handlebar

Eugene Cech May 18, 2026

Price range: $699.99 through $729.99

Gemini’s very lightweight integrated XC barstem

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Gemini Propus One-Piece MTB Handlebar

The Gemini Propus One-Piece MTB Handlebar gives mountain riders an ultralight integrated cockpit. It delivers impressive stiffness while reducing fatigue in a remarkably light design. Gemini builds each bar in its Barcelona workshop and holds the weight to just 152 grams. The brand shapes GMN ovalized sections on each side of the integrated stem to fine tune ride quality. These zones absorb vertical vibration and preserve sharp steering response. Riders who want a light and comfortable XC cockpit proven on the world circuit will appreciate what the Propus offers.

 

Product Details

Key Features of the Gemini Propus One-Piece MTB Handlebar

  • Vibration Dampening Design: Gemini’s GMN ovalized sections keep fatigue to a minimum.
  • Reactive Riding Characteristic: The GMN ovalized sections also deliver instant steering response with zero flex.
  • Aerospace-Grade Carbon Fiber: Gemini use Mitsubishi MR70 Carbon, initially designed for aerospace.
  • Low System Weight: By combining stem and handlebar into one-piece, the overall system is stiffer and lighter than a traditional setup.

Compatibility

This Propus One-Piece MTB Handlebar uses a 1 1/8 steerer clamp size that will work with the majority of XC mountain bike steerers. See Compatibility tab for more information.

Considerations

Gemini describes the Propus as a ‘100% optimized piece’ which means the Lightweight Layup comes with a maximum rider weight 198lbs. It is aimed squarely at XC riders. Unsurprisingly, being a premium handcrafted product is also reflected in the price point.

Advice From Our Staff

This is an incredibly light and high performing XC cockpit. They are handmade in Spain and follow a rigid quality control standard which makes this barstem a high-performance product you can rely on. The Gemini Propus comes at a premium, but it’s an outstanding choice for riders seeking an ultralight barstem with great vibration dampening.

Compatibility 

Steerer Clamp: This handlebar is widely compatible and will fit most mountain bike steerers on the market as it has a clamp diameter of 28.6 mm.

Framesets: This handlebar is compatible with framests that have standard internal cable routing that enters the frame near the headtube or externally routed frames. It is not compatible with full internal routed frames where cables and hoses enter the frame through the headset.

Computer Mounts: This handlebar is compatible with the Gemini Vostok Computer Mount

Specs

  • Material: Carbon with Titanium Hardware
  • Finish: Matte | Gloss
  • Width: 740 mm (trimmable to 730 mm)
  • Stem Lengths: 60 mm | 70 mm | 80 mm
  • Stem Drop: -12 mm (-29° | -26° | -23° equivalent stem angle)
  • Backsweep: 7°
  • Upsweep: 5°
  • Warranty: 2 years
  • Weight: 156 grams
  • Max Rider Weight: 198 lbs

In the Box

  • Gemini Propus One-Piece MTB Handlebar

Tools Needed for Installation

You will need the following tools for installation of this product. You can shop for these tools on our Tools Page.

  • T-25 Torx
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