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Tom's original 4-Axis stem changed stem design forever. From the stress-managing forged faceplate, bolt spacing and angled steer tube slot to the now-ubiquitous 3D net forging...

Zipp set out with one clear goal – design the best-performing carbon stem. Ever. The SL Sprint does that by having the highest stiffness-to-weight ratio of any stem on the market.

Zipp first developed the Service Course SL stem for the fit and performance needs of pros. That goal of being pro grade has proven out over the past several seasons as the stem became a mainstay in...

Ultralight 3D forged road stem made of 2014 alloy. The innovation of physical matter in a powerful design. The most advanced technology to offer the best combination of lightweight, strength and...

Arx Ltd Stealth is the carbon-fiber version of the stem, with Ti bolts and weighing just 118 g. This new model is finished in 3T 2019 Stealth graphics.