Advanced Adjustability

Vuka Alumina Clip 


The Vuka Alumina Clip is all about providing the ultimate in fit, security and adjustability for you to be faster and more efficient in your triathlon or time-trial aero position. And it’s offered at an affordable price, too.


Made from 2014 series aluminum, the clip is available with an above-bar or below-bar mounting system for achieving an optimized aero position. The clip also has a large armrest for increased comfort. The Vuka Alumina Clip is made with the industry standard 22.2mm clamp diameter for maximum versatility, making it compatible with Vuka Alumina Extensions, the Vuka Extensions (carbon) as well as most extensions on the market.


With a bar clamp diameter of 31.8mm, the Vuka Alumina Clip also is compatible with the Zipp Vuka Alumina and VukaBull base bars and three Zipp drop bars types, Service Course, Service Course SL and the SLC2. It also is compatible with many other base bars and drop bars on the market.

Vuka Alumina Risers (sold separately, cannot be stacked, MSRP $25, €18 per set), which come in 10, 25 and 50mm sizes, allow for even more fit options. The Vuka Alumina Risers are designed for use only with the above-bar system of the Vuka Alumina Clip.

The Vuka Alumina Clip weighs 310 grams for the above-bar system and 295 grams for the below-bar system. The clip does not include aero extensions.

Zipp chooses Torx®-head bolts for its stems and aero bars - why? It’s simply a better bolt:

  • Won’t easily strip.
  • Provide more accurate torque readers.
  • Are durable.

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 than 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 – for 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 common 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.


$120, €107


Vuka Alumina Top Mount 310g
Vuka Alumina Bottom mount 295g
Clamping torque
Clip to bar 7Nm
Extension clamp 4Nm
Extension fit 22.2 +0.15 -0.05mm
Stack at pad (adjustability)
Min 37mm per side
Max 110mm per side
Adjustment 73mm per side
Total Adjustment 146mm
Pad Reach
Min behind center 50mm per side
Max in front of center 50mm per side
Adjustment 100mm per side
Total Adjustment 200mm
Reach (extension fore/aft)
Min 0mm per extension
Max 55mm per extension
Adjustment 110mm
Pad Width
Max 90mm
Adjustment 90mm Total
Extension Width on base bar
per side 25mm
Adjustment 50mm Total
Triathlete Buyer's Guide: Vuka Alumina Best in Class  April 2013 [pdf]

The 2013 Triathlete Magazine Buyer's Guide named the Vuka Alumina as its Best in Class Aerobar. "Their adjustment range is incredible in all directions. The extensions are interchangeable, and Zipp offers a wide variety of shapes." 

Click on PDF for full review

BikeRadar: "Adjustable six ways to Sunday"  September 2012 praises the Vuka Alumina aero cockpit system for doing something many aero bars fail to do -- help riders achieve their most aerodynamic position on the bike.


Gear Check: Zipp Alumina Bars, Clips & Extensions  September 2012

Triathlete Europe found the Vuka Alumina to be abundant in its affordability and adjustability:

"When designing the Alumina Zipp spoke to bike fitters so see what would help the most and found adjustability was key with so many different designs of triathlon bike. Zipp listened because their affordable aluminium Alumina bars deliver choice and adjustability by the truckload."


TriRig: Vuka Alumina fantastic  June 2012

In his review on, Nick Salazar takes a detailed look at Vuka Alumina and writes: "The Vuka Alumina Clip, Bar, and Extensions are fantastic pieces of kit that would make a worthy front end on a very wide range of bikes, for a very wide range of fit needs." Read the entire review here

Vuka Alumina a hit  April 2012's Dan Empfield is full of praise in his analysis of the Vuka Alumina Clip and aero cockpit system: "Zipp has designed a bar here that meets just about every design and market imperative. It's modular. It's comfortable. It's adjustable. And it's cheap. It's like somebody at Zipp sat down and wrote out a list of everything that makes an aerobar work for end users, bike shop personnel, and bike makers. Then designed a bar, in the Zipp Vuka Alumina Clip, with those imperatives in mind. What a concept!"