Stem Spacer – the spacer for direct mount stems

Many downhill riders today swear by raising the front of their bike. Some use a handlebar with high rise, others clamp so-called stem spacers between fork crown and handlebar or build headset spacers under the upper fork crown.

The reason for this is obvious:

  • Raising the front gives more safety on steep tracks
  • It takes some pressure off the hands and makes for more relaxed runs
  • Fine tuning of the riding position and thus the wheel loads is possible – the cornering behaviour of the bike can be influenced positively

Such an increased stack makes sense especially when frames with a very long reach (very large frames) are used: Under certain circumstances, the rider would be positioned too much on the handlebars with a flat front. By raising the front, the rider stands a bit more upright and thus experiences a more central riding position.

The increased stack is also useful for very tall drivers who would otherwise achieve a very stooped “steering position”.

However, the special feature of our spacer is that it not only raises the steering center by 12 mm, but also moves the stem forward by 10 mm: Due to the very flat steering angle on modern DH bikes, when the stem is raised, the entire unit also moves to the rear and shortens the rider’s “working space”.

If the rider uses an 8 mm thick headset spacer ring in conjunction with our 12 mm high Stem Spacer 12/10, he increases his front by a total of 20 mm. In conjunction with a 63° steering angle, a 20 mm increase would move the handlebars backwards by 10.2 mm – our spacer exactly compensates for this difference in length, the handlebars effectively go up.

The spacer was FE-calculated for its operational strength and service life and subjected to an operational test in the EFBE test laboratory according to EFBE standard 7520. The requirements of the test correspond to the EFBE performance class MTB-G for Gravity Mountain Bikes (TPM-G).

Scope of delivery

Included are a spacer and 4 high-strength titanium screws for secure mounting on the triple clamp.


 The spacer fits on state of the art direct mount crowns such as those found on current RockShox, Fox, BOS, Marzocchi or Manitou downhill forks.

Technical Details

Material: EN AW-7075

Color: Black

Weight: 43 g

Height: 12 mm

Horizontal offset: 10 mm