Zipp Vuka Alumina Clip Riser Kit

Single 10mm, 25mm, and 50mm shown. Sold in pairs.
Details
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.