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Zipps' Vuka Alumina Clip Risers work with the Vuka Alumina Above-Bar Clips (sold separately) and let you raise your armrest height. They're made of sturdy, lightweight aluminum and come in 10mm, 25mm, and 50mm sizes.

Zipp's Vuka Alumina Clip Risers are designed for use with the Vuka Alumina Clip’s above-bar option. The risers are designed to offer a wider range of adjustability within the Vuka Alumina aero-cockpit system. - Sold in pairs - Risers cannot be stacked - Includes hardware

Adjust the width of your arm rests to ensure optimum airflow, power transmission, and comfort when doing a TT or bike leg. - Four positions reversible inwards or outwards for the ultimate in positioning - Bolt holes 25.0mm center to center - Fits Vuka Aero, Vuka Clip, Vuka Stealth

Zipp Speed Weaponry Vuka / Stealth Riser Kit - Bolt kits sold separately