Bike Stems

Does your steering feel sluggish, or do you want the handlebar closer to your body? The stem connects the handlebar to the fork steerer and affects both steering response and riding position. We carry Renthal stems in several lengths and for two handlebar diameters, so you can tailor the bike to your riding.

How to choose length and handlebar diameter

The two most important measurements on a stem are the length and the diameter of the handlebar clamp. The range includes, for example, the Renthal V2 Apex Stem in 33, 40 and 50 mm lengths with a clamp for either 31.8 or 35 mm handlebars. A shorter stem typically gives quicker steering and shifts your weight slightly rearward, while a longer one can provide more stability at high speed. How it feels, however, also depends on handlebar width, frame geometry and your riding style. The clamp diameter must match the handlebar exactly – a 35 mm handlebar cannot be clamped in a 31.8 mm clamp and vice versa.

Fitting and compatibility

Also check that the steerer clamp fits your fork before you order. When fitting:

• Tighten the bolts evenly and alternately to the torque specified for the specific product, and use a torque wrench.
• Align the handlebar so it sits straight before tightening the final bolts.
• Do not tighten beyond the specified torque – it can damage the handlebar or fork steerer.

Construction and colours

The stems from Renthal are made of aluminium and are available in variants such as Apex, V2 Apex and Duo, in all black or black with gold, so you can match your project. If you need other parts, you will find them under bicycle accessories, and if the bike needs to go on the car, take a look at bike racks.

Frequently asked questions

Which stem length should I choose?

It depends on the frame, handlebar width and your riding style. A shorter stem typically gives quicker steering, a longer one can provide more stability at high speed. Start from your current length and adjust in small steps.

Can I use a stem for 35 mm handlebars on a 31.8 mm handlebar?

No. The clamp diameter must match the handlebar diameter exactly, otherwise the handlebar cannot be clamped securely. Check the measurement of your handlebar and choose a stem with a 31.8 or 35 mm clamp accordingly.

How often should the stem bolts be checked?

Check the bolts after the first rides and then regularly, for example during routine servicing. Use a torque wrench and the torque specified for your particular stem, so you tighten neither too loosely nor too hard.