Stems

A 3D-forged, then precision-machined, lightweight, aluminum mountain bike stem in both 31.8mm and 35.0mm models rated for cross country, trail, all-mountain, enduro, and gravity applications. - Blind bolt holes and shaping - Cold-forged and precision-machined - No-gap face plate and clamp area - Stainless hardware

Aerodynamic and rigidity combined together to guarantee the best performance.

The Aeria Ultimate stem has been designed to complement our Aeria Ultimate Bar. It offers hidden cable routing. The low rise options allow a rider to get into a low, aerodynamic position especially useful if you need to compensate for a modern, high stack frame. The stem shape is designed to match perfectly with the Aeria Ultimate bar, it will also fit any other 31.8mm basebar. Fit Data - Stem Length: 70mm,100mm - Stem Stack: 12.2mm - Weight: 70mm (364g) - 100mm (436g) Accessories - The HSF Aeria hydration system is designed to fit to this stem and convert any bike into a ‘Superbike’ - Material: Forged 6061-T6 aluminum - Clamp Diameter: 31.8mm - Steerer Tube Diameter: 1-1/8in (1in with included shim) - Stack Height: 32.5mm - Finish: Matte Black with Gloss Accents - 70mm not capable of storing Di2 Junction Box or EPS Interface

System = speed. Paired with the SAVE or KNØT SystemBar, you end up with the speed and good looks of a one-piece system with the adjustability of a two-piece. Where it thrives: The open road, up and down hills What it's built for: Aerodynamics, efficiency Highlights: - Integrated computer mount - Compatible with most bicycles - One-piece looks, Two-piece function

Named after the 15km-high volcanoes of Mars, Tharsis is synonymous with long days in the mountains and the spirit of discovery and adventure. Tharsis components have the strength to tackle the most rugged terrain while retaining low weight. - Anodized AL-7075 - Integrated headset adjuster - Headlock front clamp system - Lightweight titanium bolts - Compatible for Shimano DI2 cable and battery integration

The WCS C220 stem is easy to install and remove thanks to a press-fit handlebar clamp interface and forward-facing hardware. - The handlebar clamp design creates a more secure interface by wrapping a full 220 degrees over the handlebar - Bolt forces are aligned with the clamp so that the stem body embraces the handlebar which is less prone to damaging lightweight bars - Clamp design allows for a lighter faceplate and stem body with no sacrifice in strength or stiffness

Zipp's Service Course SL-OS Stem provides lightweight strength and versatility to help you achieve the perfect riding position. At only 140 grams, the Service Course keeps your rig light while maintaining toughness for the long haul. Change the angle of the stem quickly and easily with the included shim that lets you tailor your comfort even more. And, the Service Course works with both 1 1/8-inch steerers and 1 1/4-inch. • Included shims allow the stem's rise to be adjusted to 4°, 6°, or 8° angles.