Zipp Service Course Stem - Blast Black Size:130mm Optimized Power Transfer: Stiff carbon

Optimized Power Transfer: Stiff carbon sole and low stack height midsole that stabilizes foot results in efficient all-day pedaling performance

reducing the vibrations that reverberate up the post

and piston attached to an ergonomic varnished wood handle- offering 25% more air-volume per stroke for faster inflation on larger tires

Matching thread-mount 2x chainrings available in three gear ratio variants10K Active Temperature CompensationWireless data transmission via Bluetooth Low Energy or ANT+MagicZero automatically checks and calibrates the power meter while ridingCadence measurement via acceleration sensors

Fits 47mm lower bearings

Zipp Service Course Stem - Blast Black Size:130mm Optimized Power Transfer: Stiff carbonThe Zipp Service Course Stem levels up on this classic go to road stem. With a redesigned faceplate and body, it is stiffer and easier to install than its predecessor. The bead blast black finish coupled with a clean Zipp logo makes this stem a suave addition to your perfect build. Features High strength and low weight AL6061 construction Smooth lines to complement the aesthetics of modern frames Strength, stiffness, and reliability at a weight of 130