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Zipp's Vuka Shift AXS 90 is more than an aero extension; it's a complete shifting system. Think of it as a supremely efficient solution to house the brains of your SRAM RED or Force eTap AXS time trial or triathlon bike. The Vuka Shift AXS 90 cleanly houses your aerobar extensions, shift-control, and head unit in one neat and clean package. This approach solves an emerging problem of the age of electronic shifting. The time for system integration is now—with this seamless solution. The extensions themselves feature the pro-proven Vuka Evo shape with a 90mm rise. The Vuka Shift AXS 90 is compatible with more than 90 percent of the integrated aerobar systems currently on the market. - AXS Integrated Aerobar shifting system - Length is trimmable, 10mm at front and 90mm at rear - Integrated Garmin/Wahoo/Bryton computer mount - Ships with SRAM Clics extension-end shifters and Blips shifting buttons for brake-lever position shifting - More than an aero extension, this is an integrated shifting system for the modern triathlon/TT bike - Cleans up your aero cockpit for simplicity and optimized aero efficiency

The 10-4 bar features large radius bends, thicker walled butted tubing and a traditional 7/8" crossbar. - 41-Thermal processed 4130 chromoly - Multi-butted

A traditional looking 4-piece bar that uses larger radius bends, thicker walled, butted tubing and a traditional 7/8" crossbar for strength and durability. - Multi-Butted, traditional 7/8" crossbar for strength - Large radius bends for greater durability - Welded end caps to reduce flex - Post-weld heat-treated for added strength

The Loop Aluminium 710mm H-Bar is our most popular H-Bar. If you're new to the H-Bar, this is the model that we tend to recommend first because its loop design has the widest range of hand positions, its aluminium construction gives the best value, and its 710mm width not only gives you the full range of positions, but allows you to cut it down to the original 660mm width (using the laser-etched cut guides) if you decide that you want something narrower. The cross bar on the Loop H-Bar sweeps forward to allow the levers to go behind the cross bar instead of in front. This gives longer uninterrupted hand positions and will allow trigger and grip/twist shifters to fit on the rearward extensions (unlike the original H-bar). The continuous front loop of the bar enhances stiffness and is good for additional aero hand positions and mounting lights, GPS devices etc. This bar provides comfort and power with an impressive weight. With the levers in the optimum position you get a wide range of hand and body positions, from fully upright at the ends of the grips, to a tucked aero position when resting your forearms across the crossbar and loop. In between these extremes, there are many unique and useful positions, making this a true multi-position bar because you'll actually find yourself using all of the positions! The rearward extensions allow extra leverage and a wider hand position - be it for comfort or power. All H-bars are for a 31.8 stem and the crossbar is now tapered and butted with a 31.8 mm clamp area. The grip tubes on the aluminum version are also butted for strength and weight savings. All H-Bars have a standard 22.2mm diameter grip area. Try wrapping the crossbar with bartape! You can wrap both the crossbar and loop (but it helps to leave a gap in the center of the loop to mount whatever gadgets you have), if you want to have the most hand positions!