Rennen took innovation to another level with the Ultra Lite Stem.

Lightest at 40 grams and offered in 3 sizes with Interchangeable inserts (25, 27.5 and 30mm).

A growing child is no match for this stem with interchangeable inserts.

Click for details here.

For 2023 Rennen has introduced a new mini stem design to our extensive product lineup.

We bring to you the Tessellate Stem.

We have spent the last year testing, optimizing and refining the design and manufacturing to create the most advanced mini stem on the market.

Click for details here.