Ritchey Pro 30 Degree Stem

Ritchey Pro 30 Degree Stem
Clamp Diameter:
Steerer Diameter:
Please select options
We only sell this item in our stores. Please visit us soon.


Ritchey's Pro stem offers professional caliber features at a real-world racer price.

- 3D net forged 6061 aluminum
- +/- 30 degree stem angle
- Angled steer tube clamp slot reduces stress on carbon steer tubes
- Material: 3D net forged 6061
- Lengths: 60 - 120mm
- Angle: +/-30 degree
- Steerer Height: 45mm
- Steerer: 1-1/8"
- Faceplate Width: 40mm
- BB Black finish
- 155g (110mm)

By placing the stem clamp slot at an angle and using opposing bolts, stress is distributed evenly across the clamping zone, resulting in a stronger, more secure grip with less torque. This makes Ritchey stems a great choice for use with forks with carbon steerers.
The Z-Clamp provides a mechanical lock between the stem and one edge of the faceplate to take pressure off the locking bolts, thereby strengthening the entire system.
Stem angle and length measurement

Stem angle is one of the factors that determines handlebar height. A listed angle of 0 degrees actually provides a rise that is dependent on your bike’s head angle (see image).

Stem length is measured along the side of the stem from the center of the steerer to the center of the handlebar clamp (see diagram). Keep in mind that as a stem provides more rise, its effective length decreases. In the example above, if the +17 degree stem measures 135mm, it actually extends 108mm parallel to the ground.

Part Numbers

Option UPC MPN Store SKU
31.8mm / Black / 60mm / 30° / 1-1/8-inch 796941312745 31-239-736 11219
31.8mm / Black / 70mm / 30° / 1-1/8-inch 796941312752 31-239-737 11220
31.8mm / Black / 100mm / 30° / 1-1/8-inch 796941312783 31-239-740 11223
31.8mm / Black / 110mm / 30° / 1-1/8-inch 796941312790 31-239-741 11224
31.8mm / Black / 120mm / 30° / 1-1/8-inch 796941312806 31-239-742 11225