The Vuka Stealth integrates the stem, basebar and mounting hardware into a single streamlined aero system. The base bar uses a truncated airfoil shape that maximizes aerodynamic efficiency while maintaining the UCI’s 3:1 aspect ratio requirement. The basebar’s Rapid Routing cable exits are positioned for easy installation of brake cables.
The Vuka Stealth is available in three separate stem lengths – Short (60/70mm), Medium (80/90mm) (or Long). You pick one. Each size also includes a stem-length spacer to increase stem length by an additional 10mm. That provides a total of 50mm of stem-length variation. The effective stem angle results in no rise, or what would traditionally be referred to as a -17° stem.
To achieve an optimal fit, the bar offers scores of additional adjustments to its “stack” (vertical measurements) and “reach” (horizontal measurements) as well as options for pad width and position plus extension width and length.
The Vuka Stealth is crafted from unidirectional carbon fiber and uses titanium and aluminum hardware. It is made with the industry standard 22.2 mm extension clamp diameter for maximum versatility, making it compatible with Zipp’s Vuka Extensions (Race, Straight, Ski-tip or Race Vuka Shift styles) as well as most extensions on the market. Extensions are sold separately.
The Medium Vuka Stealth with Zipp Vuka Race carbon extensions weighs 820 grams. Compatible with all current drive-train systems and all plug-in style brake levers.
Note: The Vuka Stealth ships with integrated stem and basebar, Vuka Stealth extension clamp & armrest clamp, Vuka Stealth risers (two each of 10 mm, 25 mm and 50 mm risers), Vuka armrest pads and Vuka armrest. Also included are a T25 L wrench, carbon paste and a 1/4 turn Zipp Quickview mount with an integrated and proprietary mounting interface.
Important documents:
Stem selection
The Vuka Stealth is available in Short, Medium or Long stem lengths. Use this Stem Selector worksheet to help determine which stem length is right for achieving your fit coordinates on a specific frame.
Vuka Stealth Frame Compatibility
Some aero frames with integrated cockpits are incompatible with the Vuka Stealth aero system. This Vuka Stealth Frame Compatibility sheet lists frames with known issues.
| Size | 40 (Center-to-Center) |
| Vuka Stealth | |
| Integrated stem | Short 60/70mm or Medium 80/90 Stem-length spacer adds 10mm to any of those sizes |
| Steerer tube diameter | 1-1/8" |
| Weight | 820g (Medium stem length with Zipp Vuka Race carbon extensions). |
| Clip Compatible | Integrated mounting hardware |
| Extension clamp width | 22.2mm |
| Extension shape | Extensions sold separately |
