The Switch Aero System lets you choose the right setup for the right conditions. The system's patented Dual-Position Seatpost lets you change from a standard road saddle position to an optimized aero position on-the-fly while riding. And the patented Quick-Release Aerobars allow you to attach or remove the aerobars in a few seconds without any tools, so you can choose the best setup for every ride.
Redshift's Switch Aero System allows you to have a proper aero position on the road bike you already own. The system is comprised of Quick-Release Aerobars and a Dual-Position Seatpost.
The Quick-Release Aerobars are different than any other aerobars on the market. The patented quick-release mechanism allows you to attach or remove the aerobars in a few seconds, without any tools. You can choose the best setup for every single ride.
The patented Dual-Position Seatpost lets you ride a true aero position on a standard road bike, without sacrificing your normal road position. And you can switch between road and aero positions on-the-fly while riding so you can always choose the best riding position for every part of your ride.
• Transform your current bike - switch from road to aero position on the bike you already own • No tools required - remove or attach the aerobars easily with the quick-release mechanism • Ride with ease - no more time and energy wasted switching from road bike to aero bike
Quick-Release Aerobar Details:
• Extensions are available in L-Bend or S-Bend • Massive adjustability lets you fine-tune your fit - extension length, armpad fore-aft, armpad width and height (Extension Riser Kit sold separately) • Secondary safety release mechanism prevents accidental release
Dual-Position Seatpost Details:
• Linkage design lets you switch between road and aero positions seamlessly while riding • Choose the best position for every single climb, flat, or descent • Maintain proper leg extension in both road and aero positions • Saddle moves forward 50mm, corresponding to approximately 4 degrees of effective seat tube angle change • Aero road riding position optimized for proper handling on a road bike • Simple, durable two-bolt saddle clamp allows infinite saddle tilt adjustment and reliable clamping • 16mm rearward setback (road position) • Check technical specifications for compatibility
What's in the Box:
• 1 x Dual-Position Seatpost • 1 x Quick-Release Aerobars (including Handlebar Clamps, Quick-Release Mechanisms, Aerobar Extensions, Armrest, Armrest Pads, and all required hardware
630 g/pr Aluminum S-bend 640 g/pr Aluminum L-bend
Pad Height (A)
Minimum - 70 mm Maximum - 100 mm (with two stack spacers - sold separately as Extension Riser Kit)
Pad Setback (B)
Minimum - 30 mm Maximum - 81 mm
Pad Width (C)
Minimum - 108 mm Maximum - 165 mm
Extension Length (D)
362 mm S-bend 368 mm L-bend
Extension Rise (E)
50 mm S-bend 100 mm L-bend
Extension Diameter (F)
22.2 mm (compatible with industry-standard extensions)
Handlebar Clamp Width (G)
31.8 mm compatible 26.0 mm compatible (with shims - sold separately as Shim Kit)
ASTM F2043 Class 1 - Suitable for road riding (only).
Seatpost Diameter (A)
Seatpost Length (B)
350 mm (bottom to clamp centerline)
Minimum Insertion (C)
Rearward Offset Road Position (D)
16 mm (post centerline to clamp centerline)
Forward Offset Aero Position (E)
34 mm (post centerline to clamp centerline)
Total Travel Road to Aero Position
50 mm (3-4 degrees effective seat tube angle change)
ASTM F2043 Class 1 - Suitable for road riding (only).
[Aerobars] Should I choose L-Bend or S-Bend extensions?
If you don't have any previous experience using aerobars, we typically recommend the L-Bend aerobars because they put your wrists and arms in a more comfortable, ergonomic position. This is usually a better fit for triathletes and long-distance riders. If you're planning on using the aerobars for shorter, higher-intensity efforts like a time-trial, then the S-Bend shape can give you slightly more leverage to put out maximal power.
[Aerobars] How do aerobars affect my bike fit?
This is a really important question, and it's one that we've spent a lot of time thinking about here at Redshift Sports, so get ready for a long answer! Aerobars (of any brand) work by rotating your upper body forward so that it is more parallel to the ground, and therefore less exposed to air resistance (imagine sticking your hand out a moving car window with your palm facing forward vs. with your fingers facing forward). If you don't change your saddle position when moving from road to aero positions, the angle between your thigh and your torso (otherwise known as the "hip angle") becomes tighter at the top of your pedal stroke, since your knees are effectively coming closer to your chest as you lower your upper body. For most riders, the tighter hip angle is uncomfortable and can actually reduce power output because you end up fighting against your body's own range of motion to move your leg over the top of the pedal stroke. It can cause back pain and generally leads to a riding position that is unsustainable, particularly for longer distance events. The other unintended consequence that occurs if the saddle position is not adjusted is that the aerobar armpads tend to be too far away to reach comfortably. You end up riding in a "superman" position with your arms extended too far forward, which puts a lot of stress on the supporting muscles of the arms, shoulders, and core. We specifically designed the Quick-Release Aerobars along with the Dual-Position Seatpost specifically to address this issue. The Dual-Position Seatpost addresses the fit implications of riding with aerobars on a road bike by allowing the saddle to move forward with the rider when shifting from road to aero riding positions. This forward movement effectively rotates the rider's body around the bottom bracket (where the pedals attach), naturally lowering the upper body down onto the aerobars without compressing the rider's hip angle. The forward movement also positions your body comfortably and efficiently over the aerobar armrest pads, letting you support your upper body through your skeleton, rather than relying on muscles. Together, the Quick-Release Aerobars and Dual-Position Seatpost provide an optimized aero riding position that allows you to ride efficiently, comfortably, and powerfully on your road bike in both road and aero positions.
[Aerobars] Will the aerobars fit non-round (aero-shaped) handlebars?
The handlebar clamps for the Quick-Release Aerobars need at least 22mm (7/8 inch) of straight, cylindrical handlebar on either side of the stem to clamp properly. Some aero-shaped handlebars have a sufficiently wide cylindrical section in the center of the handlebar to properly mount clip-on aerobars, however, some handlebars are ovalized or tapered within the clamping region. In this case, Redshift aerobars (or any clip-on aerobars) will not be compatible since they will not clamp securely on the non-round handlebar.The best way for you to check is to measure yourself, take it to a bike shop to get measured, or look up your handlebars specs online.
To read more Frequently Asked Questions for the Quick-Release Aerobars, click here.
[Seatpost] Will my saddle bag fit with the Dual-Position Seatpost?
Most standard strap-based saddle bags will fit the dual-position seatpost without issue. You may need to loosen the straps slightly to accommodate the movement that occurs between road and aero positions. If your saddle bag uses rigid clips, clamps, or some other inflexible attachment method, it's possible that your bag may not be compatible. Here is an example bikepacking saddle bag from one of our ambassadors that works just fine with the Dual-Position Seatpost:
If you have questions about your specific bag, please email us at email@example.com and we'll help you figure it out!
[Seatpost] Is the Redshift Dual-Position Seatpost legal to use in a triathlon race?
Yes! The Dual-Position Seatpost is legal for use in any non-drafting triathlon. That includes all Ironman events, USAT sanctioned events, and the vast majority of triathlons worldwide. The only events where the seatpost is not permitted are draft-legal events, which are relatively uncommon. If you're wondering about a specific race, shoot us an email at firstname.lastname@example.org and we'll help you figure it out.
[Seatpost] Will the Dual-Position Seatpost fit a Shimano Di2 battery inside?
Yes, the standard "lipstick" style Shimano Di2 battery will fit inside the seatpost. Keep in mind that the inner diameter of the seatpost is ovalized, so standard round battery mounts may not be compatible. We have found that wrapping the battery with a thin layer of packing foam is usually sufficient to secure the battery within the seatpost.
To read more Frequently Asked Questions for the Dual-Position Seatpost, click here.
“OVERALL, I’M REALLY IMPRESSED WITH THE REDSHIFT SYSTEM.
IT PERFORMS EXACTLY AS YOU’D ANTICIPATE AND DOES SO WITHOUT ANY ISSUE.” - RAY MAKER, DC RAINMAKER
"PRESERVE YOUR FAVORITE ROAD BIKE ATTRIBUTES OR QUICKLY CONVERT TO A MORE AERO RIDE WITH THIS NOVEL COCKPIT COMBO." - JONATHAN BLYER, TRIATHLETE MAGAZINE
"IF YOU’RE A TRIATHLETE ON A BUDGET, OR ONLY WANT ONE BIKE TO DO IT ALL, THEN THIS IS THE SYSTEM FOR YOU." - DEVON, AERO GEEKS
"THERE'S NO DOUBT THE SWITCH AERO SYSTEM IS BENEFICIAL TO ANYONE WHO WANTS TO PLACE AERO BARS ON THEIR ROAD BIKE. BOTH BIOMECHANICALLY AND AERODYNAMICALLY, IT MAKES PERFECT SENSE." - JIM MANTON, ERO SPORTS
"WE TESTED THE SYSTEM ON THE ROAD AND FOUND THE TWO-POSITION SEATPOST TO BE VERY SECURE. IT NEVER ACCIDENTALLY SHIFTED, EVEN OVER ROUGH ROADS." - JONATHAN BLYER, TRIATHLETE MAGAZINE
"THE AEROBARS ARE COMFORTABLE AND, DESPITE THE QUICK RELEASE, FELT AS SOLID AS ANY ORDINARY CLIP-ON." - JONATHAN BLYER, TRIATHLETE MAGAZINE
"EVEN WITHOUT THE QUICK-RELEASE FEATURE, THESE BARS WOULD BE NEAR THE TOP OF OUR LIST - THEY ARE WELL MADE AND HAVE A TON OF FIT ADJUSTABILITY." - SCOTT FLIEGELMAN, TRIATHLETE MAGAZINE
We offer two different shapes of aerobar extensions: L-Bends and S-Bends. The L-Bends (or ski-bends) tend to place your wrists in a more ergonomic, comfortable position that's great for long rides and triathlons. The S-Bends let you pull against the extensions effectively for intense time-trial efforts. Not sure which one is best for you? We generally recommend the L-Bend extensions if you're on the fence.
This kit is designed to work with your Quick-Release Aerobars to adapt the 31.8mm clamps to fit your 26.0mm handlebar simply by placing the shims inside the handlebar clamps. Once installed, the shims are essentially invisible.
Different bikes sometimes have different seatpost diameters. The ShockStop Seatpost is 27.2mm in diameter, so if your bike's seatpost is larger, you'll need a shim to adapt our seatpost to your bike's frame. Don't worry though, the shims are super-lightweight and essentially invisible once installed.
Not sure what size seatpost you have currently? There are a couple different ways to find out.
• Most seatposts have the diameter printed somewhere near the bottom of the post. You'll need to remove the seatpost from the bike frame (mark your existing seatpost height with a bit of tape before you remove it so you can replace it easily), and look for a number like 27.2, 30.9, or 31.6 (etc.). That is the diameter of the post. • If you know the make, model, and year of your bike, you may be able to look up the seatpost diameter online. Feel free to shoot us an email at email@example.com - we'll see if we can help out. • Ask your local bike shop - they'll be able to accurately measure your bike's seatpost.
Non-compatible posts: Unfortunately, if your bike's seatpost is smaller than 27.2mm (for example, the 25.4mm posts found on some recent model Cannondale Synapses) our seatpost is currently not compatible with your bike. Likewise, if you have a bike with an aero/oval/non-round seatpost, or if your bike has an integrated seatmast, the seatpost is also not compatible.
Currently, the Redshift Dual-Position Seatpost is only offered in one diameter (27.2mm). If your bike has a different seatpost diameter, check out the shim options below to find the right one for your bike. In addition to the standard black-anodized aluminum post, we also offer an aluminum version with red-anodized linkages.
Extension Riser for Aerobars
Aerobar Utility Mount
Between the Arms Water Bottle Mount and Cage
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