EXTENSION DIFFERENCES
EXTENSIONS
51 SPEEDSHOP ULTIMATE
The 51 SS Ultimate extension features a 15mm offset grip to provide comfort across rotational configurations. Designed for high hand positions that optimize aerodynamic performance. 30 Degree grip angle provides a neutral wrist orientation, releaving stress and promoting upper body comfort.
51 SPEEDSHOP SKI
The 51 SS Ski extension features a 51 Degree grip angle to provide a neutral wrist orientation that promotes upper body comfort. This extension is designed for high hand positions to optimize aerodynamic performance.
ZIPP VUKA SHIFT AXS
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. NOTE: the ZIPP Vuka Shift AXS is only compatible with SRAM electronic shifting.