RXL SL Carbon Fiber Triathlon Bicycle Extender 31.8mm Adjustable Triathlon TT Arm Rest Handlebar Aerobars 240-255mm 3K Glossy Carbon Aero Bars Black Bar Ends Aero TT Bar aero Handlebars

I use these aero bars around 80% of the time I'm in the saddle. I absolutely despise the wind while cycling. It's like my arch nemesis bent on stopping me from propelling forward. Unless, it's a tailwind. Me and the tailwind are buddies.However, in reference to these bars, they work great for me after many miles. I found them uncomfortable at first but I think that was due to me not really knowing how to place my arms on the bars correctly.The pads are a little thin, but I haven't noticed any discomfort.The clamps can slip. Even on the correct size handle bars and even if the handlebars are aluminum/metal. However, I don't really have any issues with them slipping much or on a a regular basis. It's mostly a non factor for me. That may change down the road. At which point I'll update this review.Overall, a very lightweight and cost effective method to duck the wind some and increase your average speed comfortably.

I just got these today. Spent about an hour+ trying to fit them to my Trek Madone 6 Series e2. The bars are designed in a way that is AWFUL for bike mounting. I'm sure they'll be great for the actual roads, but the installation process and how much of a pain it was is honestly inexcusable.The price for carbon is nice, they feel strong and durable like carbon should be, and they fit my bar.

This product is made to be installed on handlebars with a 31.8 mm tube diameter. My handlebars are the other type, 25.4 mm, so they will not fit. However, there are shim products available specifically for the purpose of installing handlebars into handlebar stems that are the larger size. I decided to try to use those shims to install these aero bars and it worked. If you try to do this, you might find that you have to splay and offset the shims as shown in the photo. Also, you will save yourself a lot of hassle with the installation if you invert the bike, balance it on the saddle at a 45-degree angle, and lean the bike against a wall (see photo). This product is difficult to install and you will be dropping stuff all over the place. The screws provided tighten into anchors that can fall out of their housing and onto the floor and roll away very easily. Once installed these bars provide a very good aerodynamic posture for the rider. I had bars on my bike previously, but they had a 3" elevation to them, and I noticed when looking at a photo that I don't get my head down sufficiently in the aero position. After installing these bars I notice a great improvement in my aero position. They are also quite comfortable and lightweight. I bought some adjustable end plugs for decorative effect (see photo), as this product does not include plugs. After reading other reviews, I learned that non-adjustable plugs will not fit. The open end is provided to allow for gear shifters to be installed on the aero bars, which is a nice added feature. I would not try to install these bars on a 25.4 mm tube diameter handlebar without the shims. I tried to do it using a makeshift approach using some rubber material and tape, and although I was able to get the bars installed securely, they simply did not feel like they were firmly as tight as they should have been, and I was able to move them with a modest amount of force. Now that the shims are in place, the metal-to-metal clamping action provides a completely secure attachment. These are really not bad for less than $50. You will need a metric Allen-key set and some patience if you want to install these on a 25.4 mm handlebar. I can't provide any feedback for installation on a 31.8 mm tube diameter handlebar, sorry.

Can't seem to get them tight enough to stop slipping.I even used electrical tape to wrap around my Handlebar to add some thickness, still no luck.I'm afraid of cracking them if I tighten them anymore to prevent slippage.

Don’t scan the QR code! I scanned the QR code to see if there were installation instructions and it took me to a porn site! Don’t scan the QR code! The product is fine but does not come with spacers for smaller diameter handlebars. Otherwise it is seems well made.

I liked the lightness and the lower profile, and it suits my needs as a starter areo bar. I wanted a wider spacing, so I used these items to get a firm mount:- Maxmoral 4pcs Bicycle Handlebar Rubber Gasket 22.2 mm to 31.8 mm Bike Handlebar Shim Spacer. The side ridges were filed off to get a uniform fit.- friction tape was applied to the handle bar- coarse sanded the inside mounting surface of the areo bar for increased gripAfter a test ride of 15 miles, these bars held steady. I hope these last awhile.

I should'a made this purchase long ago. I bought these bars for a century ride and could not be more pleased. When the wind started taking its toll, I used the bars almost exclusively and finished the ride with a personal best MPH. I'm a pretty big guy (6'2") and was initially concerned about the length of the bars but, length was not an issue. The installation was easy and the pads were comfortable. This is one purchase I'm very happy with.

Don't buy this product. GREAT price for carbon fiber - don't be fooled. Gigantic mounting brackets/shims, for extra large (31.8) handle bar diameter - no spacers provided for typical (26) handle bars.I spent 45 minutes trying to attach these aero bars, the screw mounting system provided is TERRIBLE - almost impossible to align the bolts with the screws -- MOVEABLE, NO WAY TO STABILIZE threaded settings. Of course I first tried to create my own mounting shims (these are CARBON FIBER after all) but could not get the screws/bolts to align.Just gave up and mailed them back. Bought a pair of tested Profile bars instead