Zipp Vuka Pad Riser Kit for VukaAero & VukaClip 4mm & 8mm
Zipp’s Vuka Aero™ redefines aero handlebar conventions while being compatible with modern-day aero bikes. The current redesigned Vuka Aero builds on the technological foundation of aero excellence set by the original version. Vuka Aero is an integrated aero bar that can be used with any stem to help you find your ideal position on the bike.
The airfoil used in the Vuka Aero is based on the shape of the SL-70 Aero road bar. The result is an aero bar that’s stiff and streamlined while maintaining the UCI’s 3:1 aspect ratio requirement. With Vuka Aero, our design team blends features with advancements from our best-in-class carbon aero and road bars:
- New removable center cap, placed in front of the stem, adds 5 percent stiffness to the aero bar and integrates seamlessly with the airfoil.
- Manufactured using SRAM’s Exogram™ technology, the same used in the ultra light and strong SRAM® RED cranks and Zipp SL Sprint and SL Speed stems.
- Rapid Routing™ cable exits are positioned for easy installation of brake cables.
- Clamp hardware and riser kits for the Vuka Aero are modeled after Zipp’s pro proven Vuka Stealth aero cockpit.
- Vuka Aero comes with our new 5mm riser kit, which will also be available for the Vuka Stealth.
- Zipp’s Vuka Fit software tool (available from the Apple App store or here on Zipp.com) makes applying your fit coordinates to the Vuka Aero simple and straightforward.
Vuka Aero ships with base bar, extension clamps, armrest clamps, risers (two each of 5mm, 10mm, 25mm and 50mm risers), Vuka armrest pads, Vuka armrest and steel hardware. Extensions and stem not included.
Available separately for Vuka Aero and Vuka Stealth, Zipp’s new Low-Stack Extension Clamp allows the armrest stack (vertical position) to be adjusted 12mm lower than previously possible. This is the setup used by pro triathlete Jordan Rapp.
Zipp chooses Torx®-head bolts for its stems and aero bars - why? It’s simply a better bolt:
- Won’t easily strip.
- More durable bolt head interface for both titanium and steel fasteners.
- Provides more accurate feedback for torque wrench sensors.
It comes down to the way the tool head interacts with the bolt. Common hex tools tend to strip the bolt head if the bolt is over torqued. This is especially true with lightweight bolts. Zipp wanted to be able to use a lightweight bolt with reliable performance. Bolts on stems and aero bars are critical to safety – having a reliable bolt is crucial.
The Torx® head is more robust that hex-head bolts and will not easily strip. Torx® fasteners also were designed for use with a torque-limiting wrench (torque wrench), which is needed to achieve the precise torque reading required for proper installation.
We chose a bolt size – T25 –that was best suited for our stems. The standard Torx tool head for an M5 bolt is a T25, although sometimes a T20 or T27 is used. The T25 is becoming a go-to bolt in the bicycle industry. It’s been used on disc brakes for years and also is in use on chainring bolts, derailleurs and shifters. What’s more, the T25 tool is commonly found in bike shops or hardware stores and is readily available alone or in multi-tool sets. For your convenience, Zipp includes a T25 wrench with all stems and aero bars.