A minimalist bar for climbers and smaller riders, the Zipp® SL Bar is the result of more than four years of research and development and more than 40 revisions of the carbon-laminate structure. It weighs a mere 170 g (Short & Shallow drops, 44 cm), but it's stiff enough to grunt over the steepest grades and smooth enough for all-day comfort, thanks to Zipp's VCLC™ vibration-damping technology included in all our bars. Features such as dual cable routing grooves and a gradual taper from 31.8 mm at the clamp to 24.2 mm at the bends contribute to the SL's classic looks.
Our goal was to design the lightest drop bar available while still passing EFBe Laboratory's top performance racing standard. We achieved it with the SL.
http://zipp.com/bars/sl-bar/#
Your stem has to resist flexing during sprints and accelerations, clamp securely to the fork and handlebar, and support your weight over significant impacts. It;s a difficult job, but the Service Course® stem is still able to combine strength, stiffness and reliability at a weight of 130 grams (100 mm length).
The Service Course has high-strength, 3D-forged construction, 7075 series aluminum and stainless steel bolts to deliver an exceptional strength-to-weight ratio while allowing for smooth lines to complement the aesthetics of modern frames.
We make our Service Course stems in seven lengths (70 mm to 130 mm in 10 mm increments) and two angles ( /- 6 degrees and /- 17 degrees) to meet any rider's fitting needs.
We use TORX® heads on all bolts for precision torque readings and ease of adjustment.
http://zipp.com/stems/service-course-stem/#