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L2 bracket features an aggressive low profile position and fit capabilities. Placing the extension mount below the basebar allows for a 2cm drop in stack over extensions mounting above the basebar, making it the lowest stack available for any clip-on style aerobar system. The updated and enhanced bolt pattern combined with the F40tt armrest boasts an expansive 32 unique armrest positions per side. - Materials: Forged 6061-T6 AL - Stack Height: 23mm - Width Adjustment: 37mm - Basebar Clamp Diameter: 31.8mm - Extension Clamp Diameter: 22.2mm - Weight: 220g

Profile Design's Multi-Fit System Kit allows early model Profile Design aero bars to work with 26.0mm and 31.8mm handlebars. This fine 6061-aluminum upgrade gives you the excellent adjustability of Profile's F-19 armrests that feature length, width and rotational settings. You'll also appreciate the supportive, comfortable Lycra-covered foam F-19 pads. Plus, on the Flip-Up model, the brackets flip up and out of the way so that you can hold onto the tops of the base bar and stand and climb with no worries about your knees hitting the armrests.

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

The 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. Extensions: The T5 extension features a 13° ski-bend designed to give a range of aerodynamic hand positions. - Bracket: Sonic - Armrest: Ergo - Armrest Offset: -70mm to -2.5mm (7.5mm Increments) - Armrest Width: 124mm to 290mm (18.5mm Increments) - Armrest Stack: 60mm - 130mm (w/ aftermarket riser kits) - Extension Length Adjustment: 25mm - 275mm (center of basebar to tip) - Extension Length: 348mm - Extension Height: 80mm - Extension Angle: 13° - Extension Material: 6061-T6 aluminum, pre-drilled for bar-end shifter cable - Armrest Rotation: 7° - Center Clamp Diameter: 31.8mm (26.0 w/Shims) - Weight: 554g

The Subsonic/Race/35a aerobar combines the low stack Subsonic bracket with the arm-hugging Race armrest to offer an industry-leading fit range oriented towards low, narrow positions. The 35a extension offers a comfortable 35 degree angle with a 80mm rise. This is the only low stack clip-on in the market that maintains the pad-to-grip angle as the bar is stacked up Subsonic is not just another aerobar bracket. It brings our next-generation fit range to a low stack bracket design. This allows the bar to use our riser kits to increase the stack without changing the relationship between the armrest and the grips. The Race armrest has been designed to tightly cup the riders arms – facilitating a narrow position and increasing control at speed. Performance - The Subsonic/Race is designed to achieve a lower stack height than standard aerobars, without the added frontal area of a below-the-basebar extension clamping system. This improves aerodynamics and the fit range. Fit Data - Armrest offset: -85mm to -17.5mm in 7.5mm steps - Armrest Width: 142mm to 272mm in 18.5mm steps (with Extensions at 100mm) - Armrest Stack: The minimum is 40mm and the bracket is compatible with our existing risers which add up to 70mm of stack in 5mm increments. - The extension rotation can be easily adjusted using the shaft bolt. There is a 40mm range of extension length adjustment once the extensions have been cut. There are 80 distinct position options achievable just by moving the armrests. Combine that with the risers and this bar offers 1200 possible configurations. As a clip on bar it is also possible to adjust the extension width and tilt easily. This is the most adjustable low stack clip-on on the market. Origin Story After we released the Supersonic (J5) as a premium bracket with market leading fit options and verstility we wanted to bring the same kind of options to teh rest of our range of brackets and thus aerobars. Where our supersonic and Sonic brackets have a minimum stack of around 60mm, like most of the popular aerobars - we wanted the Subsonic to offer a substantially lower position. This helps the segment of the market who struggle to get into their ideal position with modern bike frames. And it was vital that we include stack height adjustment without altering the pad grip relationship - so our riders have the ability to fine-tune every aspect of their setup. The Race armrest shares the flippable design of the rest of our new generation armrests. By swapping sides or rotating the armrest, 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. Additionally, there are two thicknesses of cushion available to ensure a snug fit for different sized arms. Who is it for - This bar is perfect for riders who wish to achieve lower positions than are possible with standard aerobar designs. Unlike other low stack bars, it allows fine-tuning of the stack height so the rider is not limited to only one armpad height. With the Race armrests fitted, it is tailored towards riders who intend to be low and narrow to punch the smallest possible hole through the wind. - Bracket: Subsonic - Clamp Diameter: 31.8mm (26.0 w/Shims) - Armrest: Race / 5mm Pads - Extension Length: 350mm - Width: 142mm to 272mm - Weight: 590g

The Supersonic bracket (previously know as the J5) is the first and premier model of the new generation Profile Design brackets. It offers easier adjustments and a greater fit range than anything that came before it. Pairing this bracket with the ergo armrest offers industry-leading fit options and greater comfort. With the 35c extensions, this aerobar is suited to riders who wish to adopt an aerodynamic arrowhead hand position. Performance - The Supersonic/Ergo platform is designed to give riders the freedom to find their best possible position with a huge range of independence adjustments. Fit Data - Armrest Offset: -85mm to -17.5mm in 7.5mm steps - Armrest Width: 124mm to 290mm in 18.5mm steps (With Extensions at 100mm) - Armrest Stack: 58.5mm (no riser kit) to 138.5mm in 5mm increments (With aftermarket Riser Kit) - There are 80 distinct position options achievable just by moving the armrests. Combine that with risers and this bar offers 1440 possible configurations. As a clip-on bar it is also possible to adjust the extension width and tilt easily. Origin The supersonic was the first of our generation brackets - resulting from careful analysis of the way riders use their aerobars and the adjustments that need to be made. The Ergo armrest is an integral part of the overall adjustability scheme. The dual-offset design (shared with Race and Boom armrest) gives the most precise adjustment range of any armrest on the market. This, along with the evenly curved shape, allows it to work well for the majority of riders. Extensions - Extension Shape: The 35c extensions offer a 35 deg ski bend shape. This facilitates a slightly turned-down wrist position to create a streamlined hand position. They are 400mm long and can be cut to size to suit nearly ever rider. They are drilled for rear-exit cable routing. - Bracket: Supersonic - 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: -85mm to -17.5mm in 7.5mm steps - Armrest Stack: The minimum is 58.5mm and the bracket is compatible with our existing risers which add up to 138.5mm stack with (70mm of spacers added)

The Supersonic bracket (previously know as the J5) is the first and premier model of the new generation Profile Design brackets. It offers easier adjustments and a greater fit range than anything that came before it. Paring this bracket with the ergo armrest offers industry leading fit options and greater comfort. Performance The Supersonic/Ergo platform is designed to give riders the freedom to find their best possible position with a huge range of independence adjustments. Fit Data - Armrest Offset: -85mm to -17.5mm in 7.5mm steps - Armrest Width: 124mm to 290mm in 18.5mm steps (With Extensions at 100mm) - Armrest Stack: 58.5mm (no riser kit) to 138.5mm in 5mm increments (With aftermarket Riser Kit) - There are 80 distinct position options achievable just by moving the armrests. Combine that with risers and this bar offers 1440 possible configurations. As a clip on bar it is also possible to adjust the extension width and tilt easily. Origin - The supersonic was the first of our generation brackets - resulting from careful analysis of the way riders use their aerobars and the adjustments that need to be made. - The Ergo armrest is an integral part of the overall adjustability scheme.The dual - offset design (shared with Race and Boom armrest) gives the most precise adjustment range of any armrest on the market. This, along with the evenly curved shape, allows it to work well for the majority of riders. Extensions - Extension Shape: The 4525c extensions offer a 45 deg lower and 25 deg upper section with a 7.5mm lateral shift per side. This allows the rider to choose between a low, short reach position or a high hands, stretched position for aerodynamics. They are 400mm long and can be cut to suit nearly every rider. They are drilled for rear-exit cable routing. - Bracket: Supersonic - 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: -85mm to -17.5mm in 7.5mm steps - Armrest Stack: The minimum is 58.5mm and the bracket is compatible with our existing risers which add up to 138.5mm stack with (70mm of spacers added)

The Supersonic bracket (previously know as the J5) is the first and premier model of the new generation Profile Design brackets. It offers easier adjustments and a greater fit range than anything that came before it. Paring this bracket with the ergo armrest offers industry leading fit options and greater comfort. Performance The Supersonic/Ergo platform is designed to give riders the freedom to find their best possible position with a huge range of independence adjustments. Fit Data - Armrest Offset: -85mm to -17.5mm in 7.5mm steps - Armrest Width: 124mm to 290mm in 18.5mm steps (With Extensions at 100mm) - Armrest Stack: 58.5mm (no riser kit) to 138.5mm in 5mm increments (With aftermarket Riser Kit) - There are 80 distinct position options achievable just by moving the armrests. Combine that with risers and this bar offers 1440 possible configurations. As a clip on bar it is also possible to adjust the extension width and tilt easily. Origin - The Supersonic was the first of our generation brackets - resulting from careful analysis of the way riders use their aerobars and the adjustments that need to be made. - The Ergo armrest is an integral part of the overall adjustability scheme. The dual - offset design (shared with Race and Boom armrest) gives the most precise adjustment range of any armrest on the market. This, along with the evenly curved shape, allows it to work well for the majority of riders. Extensions - Extension Shape: The 50c extensions offer a 50 deg ski bend shape with a 7.5mm (per side) lateral shift. This allows a neutral wrist angle with the capability to fine tune the grip width. They are 400mm long and can be cut to suit nearly every rider. They are drilled for rear-exit cable routing. - Bracket: Supersonic - 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: -85mm to -17.5mm in 7.5mm steps - Armrest Stack: The minimum is 58.5mm and the bracket is compatible with our existing risers which add up to 138.5mm stack with (70mm of spacers added)

Profile Design's aero-bar extensions are made of light and durable 6061 aluminum, come in different bends to suit all riding positions and feature the standard 22.2mm diameter to fit Profile and other brand base bars and extension mounts (base bars and mounts sold separately). The T2+ DL extensions have an aggressive S-bend popular for time-trials and triathlons, and the included extension bridge makes them ITU Draft Legal. They also have holes in them for internally routing your cables.

Profile Design's aero-bar extensions are made of feathery light carbon fiber, come in different bends to suit all riding positions, and feature the standard 22.2mm diameter to fit Profile and other brand base bars and extension mounts (base bars and mounts sold separately). The T2+ model has an aggressive S-bend popular for time-trials and triathlons. They are also drilled to accommodate internally routed cables or electronic shift systems. Extension Shape: The T2+ Carbon is aggressively designed for race-oriented riders looking for the most aerodynamic positioning. The S-Bend extension shape combined with the 30mm rise, provides a variety of low hand placement positions.

The ultra shallow 15° carbon extension bend maintains the high-performance aggressive position of straight extensions with the comfort of a ski-bend. - Extension Shape: The ultra shallow 15° extension bend maintains the high-performance aggressive position of straight extensions with the comfort of a ski-bend. - Outer Diameter: 22.2mm - Colors: Gloss UD Carbon Black - Construction: Multi-layered carbon fiber, pre-drilled for bar-end shifter cable routing - Weight: 164g/pair

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.

Profile Design's UCM Aerobridge positions your computer between your aero extensions to give you an additional accessory mount. It features adjustable width so you can be sure of a great fit.

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.

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.

Riser kits increase stack height to fit a wide range of riding styles for efficient positioning. Compatible with Profile Design's ZBS Aerobars, T Plus Carbon Series Aerobars, and T Plus Aluminum Series Aerobars. - Kit adds 1/2" rise and is non-adjustable to stack height. - Compatible with all Profile Design aerobars except for Century and Legacy models. - Kit includes a pair of 1/2" risers, bolts specific to riser size, and mounting hardware.

The V2+ Carbon introduces a new extension paired with the new L2 bracket. The V2+ extension is built up on a variation of the T2+ extension bend, featuring a higher rise S-bend to compensate for the lower mounting position of the extensions. The low stack bracket places the extension below the basebar with a stack height of 2.25cm below the T-series aerobars. Combining the L2 bracket and F40TT armrest offers small incremental adjustments, producing our best ever reach and width range. - Bracket: L2 Bracket - Armrest: F40tt - Armrest Stack: 37.5mm - Armrest Reach: -31.85mm to -76.85mm (7.5mm Increments) - Armrest Width (C-C): 183.2mm to 294.2mm (100mm Ext. Width) - Extension Length Adjustment: 211mm to 343mm (center of basebar to tip) - Extension Length: 366mm - Extension Height: 84mm - Extension Angle: 10° - Clamp Diameter: 31.8mm (26.0 w/Shims) - Weight: 550g

V4 Plus Aerobars have shallow-bend extensions designed to provide a more aggressive ride position with relaxed wrist angle. The aerobar features a low stack armrest position and forged bracket system that places the extensions below the basebar. - L1 Brackets: 6061-T6 Aluminum forged bracket system designed to place the armrest at the lowest stack possible and the extensions underneath the basebar - F-19a Aluminum Armrests: 4x fore/aft positioning, providing 45mm of adjustment while also allowing for 15-degrees (+/- 7.5-degrees) of rotation adjustment to angle armrests for a customized fit and Velcro-backed EVA foam pads that affix directly to armrest without straps - Extensions design specific for under-the-bar mounting Tech specs: - Extension: V4+ Aluminum - Stack: 35mm - Reach: -90mm, -75mm, -60mm, -45mm - Width: 150mm - 305mm - Extension Adjustment: 160mm – 275mm - Clamp: Fits 26.0mm and 31.8mm bars - Weight: 480G

Get low with the new V+ Series low stack bracket. V+ Series low stack extensions mirror popular T+ Series extension shapes with ergonomic modifications to improve comfort in low stack positioning. - Construction: 6061-T6 aluminum, pre-drilled for bar-end shifter cable routing - Outer Diameter: 22.2mm - Weight: 204g/pair

The V4+ Carbon introduces a new extension paired with the new L2 bracket. The V4+ extension is a variation of the T4+ extension bend, featuring a higher-rise Ski-bend to compensate for the lower mounting position of the extensions. The clamp design places the extension below the basebar with a stack height of 2.25cm below the T-series aerobars. Combining the L2 bracket and F40TT armrest offers small incremental adjustments, producing our best ever reach and width range. - Bracket: L2 Bracket - Armrest: F40tt - Armrest Stack: 37.5mm - Armrest Reach: -31.85mm to -76.85mm (7.5mm Increments) - Armrest Width (C-C): 183.2mm to 294.2mm (100mm Ext. Width) - Extension Length Adjustment: 211mm to 343mm (center of basebar to tip) - Extension Length: 366mm - Extension Height: 84mm - Extension Angle: 30° - Clamp Diameter: 31.8mm (26.0 w/Shims) - Weight: 550g

Profile Design’s Venturi Pads are the correct foam replacement pads for your Profile Design Century Aerobars (sold separately). They have adhesive on the bottom.