9.3 average score from 124 reviews

Jumper 31.8mm

Model number: BHS-38Di2
  • Lightweight 3D forged one-piece construction stem for 31.8mm handlebars.
  • With 0° angle for an active, sportive or competitive cycling position.
  • For direct mount on the steerer tube, 28.6 mm (1 1/8'')
  • Fine sandblasted finish and galvanized black bolts
  • Certified to use on all types of bikes including MTB and E-bikes
  • BHS-92 GoFix bracket included and compatible with BHS-91 Stemfix, BLS-99 GoMount and Di2
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Jumper Di2 Handlebar Stem

The Jumper will give you the confidence to do that jump, close that gap, and finish that last sprint! The Jumper is a strong handlebar stem to keep the control over every ride. Available in different sizes to make sure there is always a jumper that fits you!

Specifications

  • Stem type Fixed
  • Material 6061 T6 Aluminium
  • Bar center diameter (mm) 31.8
  • Di2 Compatible Y
  • Fork pipe diameter (mm) 28.6mm (1 1/8")
  • Bracket included BHS-92 Gofix
  • Compatible with BHS-91 Stemfix, BHS-92 Gofix, BLS-99 GoMount
  • Certified for E-Bike (EN 15194), MTB (EN 14766 / ISO 4210), Road (EN 14781 / ISO 4210), Touring (EN 14764 / ISO 4210)
  • Stack height 39 mm
  • Weight (g) 161
Handlebar center diameter

Handlebar center diameter

The handlebar center diameter refers to the size of the handlebar where it attaches to the stem or another accessory. This diameter can vary between different types of bikes. Common sizes include 31.8mm for road bikes and mountain bikes, and 25.4mm for trekking and city bikes. Check your handlebar's center diameter to ensure compatibility when purchasing a new stem.

Stem angle

Stem angle

The angle of a cycling stem, or 'rise,' impacts your riding position. A 0º stem is perpendicular to the steerer tube while positive angles like +6º, raise your handlebar creating a more upright fit. Flipping the stem or using a double-angled stem creates a negative angle for a more aerodynamic position. Our range includes stems with varying degrees from zero to -40º to +60º.

Angles

Angles

0°.

E-bike ready

E-bike ready

Products suitable for use on a wide range of bicycles, including E-bikes. Ensuring durability even at higher speeds and with heavier bikes. They meet the NEN-EN 15194:2017 standard for electric bicycles, covering safety aspects and hazard prevention. This e-bike-ready label guarantees your gear can handle the demands of (electric) cycling, providing peace of mind when you hit the road on your e-bike.

Di2 compatible

Di2 compatible

When a stem or handlebar is labelled as Di2 compatible, it means that it is designed to accommodate Shimano's Di2 electric-shift cable routing system. This allows for seamless integration and optimal performance when using Di2 electronic shifting components on your bike.