KOM Cycling for Garmin Varia Mount Tail Light Models Including Garmin Varia RearVue 820, RTL515, RTL510, RVR315, Magene L508 Featuring an ATOP Dial for Security - Varia Seatpost Radar Mount

Great platform for Garmin/Wahoo computers! Love that is compatible with my aero cf seat post. Easy to adjust, secure and has held up well. All my bikes are equipped with one.

I haven’t ridden with this mount as of this writing but it sure looks sturdy. Although there is a little sway side to side, it won’t get dislodge during the ride. Definitely secure vertically. I actually bounced the rear wheel quite hard and it didn’t move a mm up or down or sideways. I used the optional wedge which worked well with my Madone Gen 8 Seatpost. See pics. I only hope that the non abrasive cable would last a long time and won’t get cut. It is actually a good material choice since it will not damage carbon. I will still put a plastic film similar to ride wrap just to make sure paint won’t be damage during normal use.

I like the mount and the Atop dial. While it's not a BOA it works well. Kudos to KOM for including a universal Hexa grasp shim. That being said the original shim fits my aero seatpost great but doesn't seem to work well with round and D shape posts. The Hexa grasp shim does but not as solid as I would like, no matter how tight the dial. There is side to side movement with a little pressure. On the Hexa shim there is a gap between where it meets the post. I put a piece of High density foam in the gap and it is a much more solid fit. I think they still need to perfect the shim shape and I would give 5 stars but with the foam it works great for me. I like how easy it is to transfer from bike to bike compared to struggling with rubber bands.

Fantastic mount for deep aero seatposts. Holds steady and secure without marking the carbon. Easy to install for training and easy to remove for races.

UPDATE: As I said I would, I wrapped a piece of 3M Protective Tape around the section of seat post and the mount seemed to grip A LOT better -- almost no slipping down and harder to rotate the Varia. I took it on a 64-mile ride that included some very bumpy asphalt and the unit barely moved, but certainly never loosened or slipped down and failed as it had during an 18-mile ride on smooth roads. One thing I plan to redo, is wrap a longer section of the seat post, to give the mount a chance to settle into a spot that's still wrapped with the tape, because the wires held their position but the rubber grip did tend to want a lower spot than the wires (as you can see in my photo). CONCLUSION: KOM should include a small supply of Protective Tape - otherwise, this thing DOES NOT WORK for carbon seat post finishes - it just doesn't. Giving it three stars, up from just two. FIRST REVIEW: As others have reported, on a round, carbon seat post, it does not hold securely. I made sure the post was clean (with rubbing alcohol) before mounting and even with the "Boa" clamp as tight as possible, it seemed tight when I started the ride, but after 15 miles, on average pavement I noticed it had fallen almost three (3) inches. I had my doubts it was going to work, even before the ride because it was pretty easy to rotate/swivel the mount. Now, I'm sure KOM put this product out there and mostly didn't care. The rubber just isn't soft and grippy enough for smooth, round, carbon (matte finish) seat posts -- period. For $39, this single-function, basic accessory should do its job with no accommodations necessary. KOM, I'm going to try and make up for your indifference by wrapping my seat post with a piece of 3M protective tape, which I happen to have and which seems to want to grip you rubber insert a bit better than my seat post surface. I'll report back. If that works for me, I might keep your over-priced accessory.

Does not function properly. It is not able to hold the light in place, it rotates. Additionally, the radar also does not fit tightly on the KOM Cycling, it does not click when turning it. The idea is good but requires adjustments, it is poorly executed. I threw away the money.

Quality product and excellent customer support. I purchased this mount to fit my water drop seat post after contacting KOM to check figment. Sunny was very helpful and prompt in responding. Good all refund experience.

This is a solid, secure mount for my 34.9 mm diameter GoCycle G4i seat post. To prevent lateral movement after installation, I found it helpful to firmly press and hold the quarter-turn mount against the seat post so the rubber can conform to the post shape. While continuing to push the mount against the post, tighten the ATOP system until secure. Done right, the mount should not move up and down or side to side. It is much better-looking and more secure than the stock Garmin mount and, unlike the optional Garmin mount that can be screwed to a seat post, this fits a GoCycle.

Product arrived quickly and was in perfect condition.

I really wanted to like this and it has a nice look, but it doesn’t really fit an S-works pave D shaped seat post. it will shift right or left with any bumps in the road. Moved it to my aero post on another bike and it works better, but it will still SLIDE down unless you put some rubber/silicon under the straps.

I had been waiting ages for these to come in stock and was massively disappointed when it arrived Yes there is less chance of it dropping off than the standard Garmin seat post mount that comes with the Varia. Also if you have a D shaped or aero seat post this might work well However for a standard round seat post it is absolutely rubbish. There isn't enough friction so the mount swivels round at the slightest pressure. This could probably be solved by putting in a shim, however I wouldn't expect to have to bodge it with a £40+ mount Would definitely avoid. Nice idea. Terrible in practice

I think this product is awesome. Great quality. Sturdy and easy to use. BUT....unfortunately it just didn't work out for me. I have very little room on the back of my bike to use this effectively. I'm sad I can't use it. I really like the product. I'd recommend this to anyone who need a great product to hold your Garmin Varia.

Lo instale en una Specialized Tarmac SL7 y no termina de ajustar perfectamente