Allows you to use a 1 inch (25.4mm) threadless stem on a bike with a 1-inch (22.2) threaded steerer.

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 Gap Cap works with 1" or 1 1/8" steer tubes to keep your headset adjusted properly at all times. The composite wedges are a fantastic choice for carbon steerers, and at 30-45 grams, you'll keep the front end of your bike super light.

Fits Profile Design's F-18 through F-22 Series armrests, providing a low profile mount for arm pads. - Construction: 6061-T6 Forged Aluminum - Availability: Two kits to choose from: 31.8mm for flip-up styles or available in 31.8 for non flip-up style. - Weight: 65-70g - Does not include bottom clamp

The new range of extensions have evolved from our well proven T-Series. They have been designed to offer distinct fit options. We have also adopted a new naming system whereby the name gives the angle material of the extension. Thus 35a is a 35° bend in aluminum. Performance - The sole purpose of extensions is to provide a comfortable position for the riders hands relative to the armrests. They enhance performance by allowing the rider to relax into their optimal position. Which is why we provide different fit options so each rider can chase their best performance. Fit Data - Extension Shape: A 35 degree ski-bend extension suited to riders who prefer to adopt a wrist angle that is on the low side of the neutral range. - The 35a is a straight 35° bend. Tech Guide - All the extensions have a 22.2mm diameter in the clamping area. - They are designed for cables to be routed out the rear of the extensions so do not have cable exit holes. Who is it for? - The extensions will fit in any aerobar that is designed for 22.2mm. So can be used by any rider wishing to improve the comfort of their aerobar grips. - Length: 340mm or 400mm - Outer Diameter: 22.2mm - Construction: 6061-T6 aluminum, pre-drilled for bar-end shifter cable routing - Weight: 200g/pair

The new range of extensions have evolved from our well proven T-Series. They have been designed to offer distinct fit options. We have also adopted a new naming system whereby the name gives the angle material of the extension. Thus 35c is a 35° bend in aluminum. Performance - The sole purpose of extensions is to provide a comfortable position for the riders hands relative to the armrests. They enhance performance by allowing the rider to relax into their optimal position. Which is why we provide different fit options so each rider can chase their best performance. Fit Data - Extension Shape: A 35 degree ski-bend extension suited to riders who prefer to adopt a wrist angle that is on the low side of the neutral range. - The 35c is a straight 35° bend. Tech Guide - All the extensions have a 22.2mm diameter in the clamping area. - They are designed for cables to be routed out the rear of the extensions so do not have cable exit holes. Who is it for? - The extensions will fit in any aerobar that is designed for 22.2mm. So can be used by any rider wishing to improve the comfort of their aerobar grips. - Length: 400mm - Outer Diameter: 22.2mm - Construction: Carbon - Weight: 262g/pair

The new range of extensions have evolved from our well proven T-Series. They have been designed to offer distinct fit options. We have also adopted a new naming system whereby the name gives the angle material of the extension. Thus 4525a is a 45° / 25° bend in aluminum. Performance - The sole purpose of extensions is to provide a comfortable position for the rider's hands relative to the armrests. They enhance performance by allowing the rider to relax into their optimal position. Which is why we provide different fit options so each rider can chase their best performance. Fit Data - The 4525a extensions have a first section at 45° and the grip at 25°. The rider can choose whether to hold high for the shrugged position or low for a more open, head up position. - The 4525a offer a 7.5mm lateral shift per side. This allows the rider to get their hands narrower or wider without tilting the extensions so much that the shifters touch. Origin - Recent Trends in aerobar fit have been towards higher hand positions, so we've increased the rise compared to previous generation extensions. We have focused on the most popular angles from our previous range and added the 45/25a as a multi position option. Tech Guide - All the extensions have a 22.2mm diameter in the clamping area. - They are designed for cables to be routed out the rear of the extensions so do not have cable exit holes. Who is it for? - The extensions will fit in any aerobar that is designed for 22.2mm. So it can be used by any rider wishing to improve the comfort of their aerobar grips. - Length: 400mm - Outer Diameter: 22.2mm - Construction: 6061-T6 aluminum, pre-drilled for bar-end shifter cable routing - Weight: 200g/pair

The new range of extensions have evolved from our well proven T-Series. They have been designed to offer distinct fit options. We have also adopted a new naming system whereby the name gives the angle material of the extension. Thus 45/25c is a 45° / 25° bend in aluminum. Performance - The sole purpose of extensions is to provide a comfortable position for the riders hands relative to the armrests. They enhance performance by allowing the rider to relax into their optimal position. Which is why we provide different fit options so each rider can chase their best performance. Fit Data - The 45/25c extensions have a first section at 45° and the grip at 25°. The rider can choose whether to hold high for the shrugged position or low for a more open, head up position. - The 45/25a offer a 7.5mm lateral shift per side. This allows the rider to get their hands narrower or wider without tilting the extensions so much that the shifters touch. Origin - Recent trends in aerobar fit have been towards higher hand positions, so we've increased the rise compared to previous generation extensions. We have focused on the most popular angles from our previous range and added the 45/25c as a multi position option. Tech Guide - All the extensions have a 22.2mm diameter in the clamping area. - They are designed for cables to be routed out the rear of the extensions so do not have cable exit holes. Who is it for? - The extensions will fit in any aerobar that is designed for 22.2mm. So can be used by any rider wishing to improve the comfort of their aerobar grips. - Length: 400mm - Outer Diameter: 22.2mm - Construction: Carbon - Weight: 242g/pair

The new range of extensions have evolved from our well proven T-Series. They have been designed to offer distinct fit options. We have also adopted a new naming system whereby the name gives the angle material of the extension. Thus 50a is a 50° bend in aluminum. Performance - The sole purpose of extensions is to provide a comfortable position for the riders hands relative to the armrests. They enhance performance by allowing the rider to relax into their optimal position. Which is why we provide different fit options so each rider can chase their best performance. Fit Data - Extension Shape: A 50a extensions offer a 50° ski bend shape. - The 50a offer a 7.5mm lateral shift per side. This allows the rider to get their hands narrower or wider without tilting the extensions so much that the shifters touch. Origin Recent Trends in aerobar fit have been towards higher hand positions, so we've increased the rise compared to previous generation extensions. We have focused on the most popular angles from our previous range and added the 50a as a multi position option. Tech Guide - All the extensions have a 22.2mm diameter in the clamping area. - They are designed for cables to be routed out the rear of the extensions so do not have cable exit holes. Who is it for? - The extensions will fit in any aerobar that is designed for 22.2mm. So can be used by any rider wishing to improve the comfort of their aerobar grips. - Length: 400mm - Outer Diameter: 22.2mm - Construction: 6061-T6 aluminum, pre-drilled for bar-end shifter cable routing - Weight: 200g/pair

The new range of extensions have evolved from our well proven T-Series. They have been designed to offer distinct fit options. We have also adopted a new naming system whereby the name gives the angle material of the extension. Thus 50c is a 50° bend in carbon. Performance - The sole purpose of extensions is to provide a comfortable position for the riders hands relative to the armrests. They enhance performance by allowing the rider to relax into their optimal position. Which is why we provide different fit options so each rider can chase their best performance. Fit Data - Extension Shape: A 50c extensions offer a 50° ski bend shape. - The 50c offer a 7.5mm lateral shift per side. This allows the rider to get their hands narrower or wider without tilting the extensions so much that the shifters touch. Origin - Recent trends in aerobar fit have been towards higher hand positions, so we've increased the rise compared to previous generation extensions. We have focused on the most popular angles from our previous range and added the 50c as a multi position option. Tech Guide - All the extensions have a 22.2mm diameter in the clamping area. - They are designed for cables to be routed out the rear of the extensions so they do not have cable exit holes. Who is it for? - The extensions will fit in any aerobar that is designed for 22.2mm. So can be used by any rider wishing to improve the comfort of their aerobar grips. - Length: 400mm - Outer Diameter: 22.2mm - Construction: Carbon - Weight: 268g/pair

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

The Airstryke II takes the features of the ever popular Airstryke and adds an expanded fit range and more comfortable armrest. The flip up bracket and classic shape are retained. Performance The Airstryke II is intended to allow riders to add aerobars to their road or adventure bike without sacrificing the ability to hold the bars close to the stem. The comfortable grip angle and smoothly curved armrest offer a relaxed position for long days in the saddle. Fit Data - Armrest Offset: -85mm to 17.5mm in 7.5mm steps - Armrest Width: 131mm to 298mm in 18.5mm steps - Armrest Stack: 40mm Origin As one of the most popular model in the history of aerobars it seemed appropriate to update the much loved Airstryke with our new generation fit range and comfort focused armrest. We didn't want to change the elements that have made the bar so successful and the changes made just enhance the adjustability and comfort. - Bracket: L2 Flip-Up - Clamp Diameter: 31.8mm (26.0 w/Shims) - Armrest: Ergo Armrest - Armrest Stack: 40mm - Reach: -85mm to 17.5mm in 7.5mm steps - Extension Adjustment: 150mm (center of basebar - end) - Armrest Width: 155mm - 203mm - Weight: 592g

The J5 BTA is specifically designed to integrate with the J5 Bracket featured on the new T+ Carbon Aerobar Systems. Building the BTA mount into the bracket system streamlines the cockpit, providing improved performance while the bolt-on mount stays secure on the roughest of roads. Moving the system away from extensions opens up hand positions. - Construction: 3D Forged 6061-T6 AL - Compatibility: Standard Bottle Cage or AeroHC - Adjustability: 3 Fore/Aft Positions - Weight: 45g *Extensions must be at 100mm width (Center – Center)

Profile Design's lightweight and sleek looking headset spacers are just what you need to make sure your bike functions and looks great. Available in 2, 3, 5, 10, and 20mm thicknesses.

The Ergo is the core of our new family of fit and comfort focused armrests. It offers a smoothly curved shape designed to comfortably cup the elbows while providing good support and control. The bolt pattern yields 48 possible configurations just by moving the armrest. The Ergo is compatible with all current aerobars and earlier models that used the F-19, F-22, F-35 or F-40 armrests. - Armrest Construction: Injected Nylon/Glass Fiber - Pad Construction: EVA foam with anti-bacterial/anti-microbial Lycra cover - Pad Model: 10mm - Color: Matte Black - Hardware: M6 x 10 FHB - Weight: 145g/pair

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 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.

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

Replacement pads for the F-40 armrest.

The F40 Armrest was designed in combination with the Aeria Ultimate to offer a massive adjustment range in a simple solution. Creative engineering and design have yielded a strategic offset bolt pattern offering a 67.5mm fore/aft adjustment range at 7.5mm steps between each position and a 92.5mm width adjustment range at 18.5mm steps between each position. Upgrading any of Profile's T+ Carbon Aerobar Systems to the F40 armrest will increase the range of adjustability by 31%, offering 42 unique armrest positions. - Armrest Material: 6061-T6 AL - Armpad Material: EVA Closed Cell Foam - Compatibility: J2/J3/J4/J5/L1/L2/Aeria/Aeria Ultimate - Size: 122mm x 84mm - Stack: 19mm (w/Standard Pad) - Reach Adjustment: 7.5mm Increments - Width Adjustment: 18.5mm - Rotation Adjustment: +/- 7.5 - Weight: 175g

The Profile Design Flip/Ergo platform is designed to give riders the freedom to find an optimal low stack position with the ability to hold the bar tops when climbing. There are 80 distinct position options achievable just by moving the armrests. As a clip-on bar it is also possible to adjust the extension width, length, and tilt easily. - 50a extensions offer a 50deg ski bend shape with a 7.5mm (per side) lateral shift - Extensions 340mm long and can be cut to size to suit nearly every rider - Bracket: Flip - Clamp Diameter: 31.8mm (26.0 w/Shims) - Armrest: Ergo / 10mm Pads - Armrest Width: 112mm to 280mm in 18.5mm steps (with Extensions at 100mm) - Armrest Offset: -85mm to -17.5mm in 7.5mm steps - Armrest Stack: 40mm - Weight: 587g

Flip-up armrest leaving the base or drop bar clear for riding with your hands on the flat section of the handlebar. - Construction: 6061-T6 Forged Aluminum - Stack Height: 24mm - Width Adjustment: 37mm - Clamp Diameter: 31.8mm (26.0 w/Shims) - Weight: 242g

The Hypersonic/Ergo platform is designed to give riders a low stack bar with easy adjustability of extension length and rotation. The Hypersonic bracket offers our new generation fit range in a low stack, under-mount format. Pairing this bracket with the ergo armrest offers industry-leading fit options and greater comfort. With the 50a extensions, this aerobar encourages a neutral wrist angle. - Armrest Offset: -85mm to -17.5mm in 7.5mm steps - Armrest Width: 112mm to 280mm in 18.5mm steps (With Extensions at 100mm) - Armrest Stack: 39mm

Ergonomic Legacy II Aerobars feature extensions that provide a variety of hand positioning, and width and rotational armrests with a high stack to achieve a relaxed ride position. Ideal for riders that need extra positions for Centuries. - Injected Venturi Armrest and ZB Bracket - Forged 6061-T6 construction with armrest made of injected nylon and glass fiber - Fixed extension adjustment - Extension angle 44 degrees with 58mm rise - Fits both 26.0 and 31.8mm basebars, shims included

The Race is, as the name suggests, oriented towards holding the rider in a narrow, speed focused position. It offers a tight radius curve intended to very closely clasp the elbows - providing good control and helping the rider to stay in a tight position. The bolt pattern yields 32 possible configurations just by moving the armrest. The Race is compatible with all current aerobars and earlier models that used the F19, F22 or F35 armrests. - Armrest Construction: Injected Nylon/Glass Fiber - Pad Construction: EVA foam with anti-bacterial/anti-microbial Lycra cover - Pad Model: 5mm - Hardware: M6 x 10 FHB - Weight: 145g/pair

Our new Sonic bracket has been designed as the successor to the J2, which has been a somewhat ignored part of our range. With this update it brings our new generation fit range to a wider range of price points, replacing the J2 bracket. The Ergo armrest has been created to offer both a huge upgrade in fit range as well as increased rider comfort with a supportive curve to cup the arms. Performance - 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. Fit Data - 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 (no riser kit) to 130mm in 5mm increments (With aftermarket Riser Kit) - The extension length and rotation can be easily adjusted using the top bolt. There are 100 distinct position options achievable just by moving the armrests. Combine that with the risers and this bar offers 1500 possible configurations. As a clip-on bar it is also possible to adjust the extension width and tilt easily. This is the most adjustable clip-on bar on the market (and in history). It is worth noting that our previous top level clip-on aerobar, the J4/F35, offered 90 possible configurations. This highlights the significant step forward we’ve made with our new generation aerobars in allowing riders to precisely adjust their position. Origin - After we released the Supersonic (J5) as a premium bracket with market-leading fit options and versatility, we wanted to bring the same kind of options to the rest of our range of brackets and thus aerobars. By simplifying the extension clamp and shifting the wing forward to the bar center line, we were able to meet our targets. As a consequence of the simplification the Sonic is the lightest of our current brackets. The Ergo armrest shares the flippable design of the rest of our new generation armrests. By swapping sides or rotating the armrests, smaller increments of movement are achieved – making it simple to fine-tune a rider's position or match the position from their previous aerobar or bike. Extensions - Extension Shape: A 35 degree ski-bend extension suited to riders who prefer to adopt a wrist angle that is on the low side of the neutral range. - The 35a is a straight 35° bend. - Bracket: Sonic - Clamp Diameter: 31.8mm (26.0 w/Shims) - Armrest: Ergo / 10mm Pads - Armrest Width: 124mm to 290mm in 18.5mm steps (with Extensions at 100mm) - Armrest Offset: -70mm to -2.5mm in 7.5mm steps - Armrest Stack: The minimum is 60mm and the bracket is compatible with our existing risers which add up to 130mm stack with (70mm of spacers added) - Weight: 559g

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

The Sonic/Ergo/45AR aerobar offers comprehensive yet simple adjustments, ideally suited to riders wishing to add aerobars to their road, gravel, or bikepacking bike. The Sonic/Ergo platform offers a large range of adjustments in every dimension, enabling riders to optimize the comfort of their positions. This bar can be used for draft-legal triathlon once shortened to meet the ITU Rules. - Clamp Diameter: 31.8mm (26.0 w/Shims) - Armrest: Ergo Ultra / 10mm Pads - Armrest Width: 124mm to 290mm in 18.5mm steps (with Extensions at 100mm) - Armrest Offset: -70mm to -17.5mm in 7.5mm steps - Armrest Stack: The minimum is 60mm and the bracket is compatible with our existing risers which add up to 130mm stack with (70mm of spacers added) - Extension Width: 100mm - Weight: 545g

Our new Sonic bracket has been designed as the successor to the J2, which has been a somewhat ignored part of our range. With this update, it brings our new generation fit range to a wider range of price points, replacing the J2 bracket. The Ergo armrest has been created to offer both a huge upgrade in fit range as well as increased rider comfort with a supportive curve to cup the arms. Performance - 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. Fit Data - 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 (no riser kit) to 130mm in 5mm increments (With aftermarket Riser Kit) - The extension length and rotation can be easily adjusted using the top bolt. There are 100 distinct position options achievable just by moving the armrests. Combine that with the risers and this bar offers 1500 possible configurations. As a clip-on bar it is also possible to adjust the extension width and tilt easily. This is the most adjustable clip-on bar on the market (and in history). It is worth noting that our previous top-level clip-on aerobar, the J4/F35, offered 90 possible configurations. This highlights the significant step forward we’ve made with our new generation aerobars in allowing riders to precisely adjust their position. Origin - After we released the Supersonic (J5) as a premium bracket with market-leading fit options and versatility we wanted to bring the same kind of options to the rest of our range of brackets and thus aerobars. By simplifying the extension clamp and shifting the wing forward to the bar center line we were able to meet our targets. As a consequence of the simplification the Sonic is the lightest of our current brackets. - The Ergo armrest shares the flippable design of the rest of our new generation armrests. By swapping sides or rotating the armrests smaller increments of movement are achieved – making it simple to fine-tune a riders position or match the position from their previous aerobar or bike. Extensions - Extension Shape: A 50a extensions offer a 50° ski bend shape. The 50a offer a 7.5mm lateral shift per side. This allows the rider to get their hands narrower or wider without tilting the extensions so much that the shifters touch. - Bracket: Sonic - Clamp Diameter: 31.8mm (26.0 w/Shims) - Armrest: Ergo / 10mm Pads - Armrest Width: 124mm to 290mm in 18.5mm steps (with Extensions at 100mm) - Armrest Offset: -70mm to -2.5mm in 7.5mm steps - Armrest Stack: The minimum is 60mm and the bracket is compatible with our existing risers which add up to 130mm stack with (70mm of spacers added) - Weight: 559g

The bracket is forged to create a sleek low stack design. It offers significantly lower stack than the rest of the Sonic range while retaining the extension reach and width adjustment options. It is compatible with a 31.8mm basebar, our riser kits, and 22.2mm extensions in aluminum and carbon. - Materials: Forged 6061-T6 AL - Stack Height: 23.5mm - Width Adjustment: 37mm - Basebar Clamp Diameter: 31.8mm - Extension Clamp Diameter: 22.2mm - Weight: 352g