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Profile Design's F-19 Replacement Pads are the correct ones for their F-19 armrests. These pads feature Lycra-covered medium-durometer foam and are held on with Velcro backing.

Riser kits increase stack height to fit a wide range of riding styles for efficient positioning; compatible with ZBS Aerobars, T Plus Carbon Series Aerobars, T Plus Aluminum Series Aerobars, Supersonic Aerobars, Sonic Aerobars, and Subsonic Aerobars. - Multiple kits can be used to reach desired height up to 80mm rise - Raises armrest and extensions together to maintain a comfortable wrist position - Kit includes a pair of risers, bolts specific to riser size, and mounting hardware - Risers are compatible with J2, J3, and J4 Aerobar brackets - Clamp diameter: 31.8mm

Large surface area triathlon or TT aerobar armrest elbow pad with contoured edges to provide support and relieve pressure points. - F-35 Standard replacement pads are 16mm thick, built with moderate thickness to provide comfort in both training and race conditions - Made of EVA foam with anti-bacterial/anti-microbial Lycra cover - Compatible with F-35a Aluminum, F-35c Carbon, F-35i Injected, and F-35 Adjustable Armrests - Weight: 26g/pair

Allows you to use a 1-1/8th inch stem on a bike with a 1-inch steerer.

Profile's T5+ Clip-on Aerobars are made of feathery light carbon fiber and feature super-shallow 15-degree ski-bend extensions with length, width, and armrest adjustments so you can easily find a perfect aero position. These clip-ons have Profile's J4 brackets for a low, aero arm position and their comfy, adjustable F-35 armrests.

The Race and Ergo Ultra pads allow riders to tune their setups for a snug fit. - New foam that resists being crushed for longer periods of time - Improved surface durability - Superior grip with a molded-in textured surface - Compatible with both the Ergo and Race armrest kits - Dimensions: Race (92.9mm x 887.5mm) or Ergo (108.4mm x 87.5mm) - Compatibility: Race / Ergo - Weight: 5mm: 21g / 10mm: 37g

Profile Design's UCM XL Universal Computer Mount provides a convenient 60mm-long place to mount your computer on your aero bars. It installs without tools, stays put and can be positioned as needed for easily viewing and controlling your computer.

Profile Design's UCM Universal Computer Mount provides a convenient 25mm long place to mount your computer on your aero bars. It installs without tools, stays put and can be positioned as needed for easily viewing and controlling your computer.

The Sonic/Ergo is designed to present minimal frontal area to create as little aerodynamic drag as possible. The main purpose of an aerobar is, of course, to get the rider into a fast position. Despite a fairly minimalist appearance, the Sonic/Ergo offers a comprehensive fit range for exactly this purpose. - Armrest Offset: -70mm to -2.5mm in 7.5mm steps - Armrest Width: 124mm to 290mm in 18.5mm steps (with Extensions at 100mm) - Armrest Stack: 60mm to 70mm in 5mm increments (with aftermarket Riser Kit) - Extension length and rotation can be easily adjusted using the top bolt - Weight: 545g