TUSITA Seat Post Quarter Turn Mount Compatible with Garmin Varia RTL510 RTL515 RVR315, RearVue 820 Rearview - Fit 27.2mm 30.9mm 31.6mm Bars Seatpost

Works superbly with my Garmin radar on my seat post. Comes with useful shims and locks in securely while allowing for adjustment with a few turns of the screw.

work great no issues

The adapter shim for a 27.2 mm seatpost has an internal diameter of 23 mm and a thickness of 5mm instead of the 2.8 mm the manufacturer claims. As a result, it is impossible to attach the mount to a 27.2 mm seatpost. However, the 31.6 mm shim works on a 31.6 mm seatpost. The above review was based on a mount I purchased three years ago. I had just bought a new bike with a 27.2 mm seatpost and tried to transfer the mount to it, but was unable to get it to fit. However, since other reviews were very positive about its fit on a 27.2 mm seatpost and the product description said one of the shims would fit, I took a chance and ordered another one. This time the thickest shim fit perfectly. I don't know why I got a 23 mm shim three years ago. There could have been a mistake in packaging, or perhaps I didn't notice because at the time I was looking for something to fit a 31.6 mm seatpost. Anyway, I've updated it to five stars because it is such a vast improvement over the rubber band mount Garmin gives you.

Solid, strong Mount. Fits securely on my 27.5 post. Great product !

I bought this for my new Garmin tail light. The light did come with an OOTB mount but I wanted something a bit more robust. I'm pleased with this purchase. It was fairly easy to install... I guess we'll see if it stays on the post. I did struggle a bit installing it.

Super easy to install and very secure.

My only complaint with my Garmin Varia taillight is that the included mount is a poor design, held on by a rubber band. This mount solves that problem. It fits my 27.2 seatpost perfectly and allows plenty of clearance for saddle bags. The taillight locks solidly in place. It works so well that I bought another one for my second bike.

Moving the original mount from one bike to the other was getting old and even though it took minimal effort, somehow the act of remembering, undoing it, and then reinstalling it each time became a pain. That's what led me to this item. I installed it on my gravel bike and once on, it hasn't come off and hold the Varia radar securely, even through bumpy gravel rides. It's been great so far and am considering getting another for my road bike. The only thing that took a bit of effort was that none of the rubber pieces that account for different seat post diameters fit my post very well. They resulted in too loose of a fit or too much that the clamp wouldn't tighten. I ended up shaving one down to right thickness to get it to fit properly. Other than that, it's been flawless. So, pay attention to the diameters these rubber pieces state they're good for, otherwise, you may have to do what i did as well.

Better quality than the original Garmin quarter turn mount. My Garmin mount broke mounting it the 1st time.

結構軽く回るけど、カチッとはまる。 通勤など、目的地での脱着が多い方にオススメします。ほぼ毎日、通算で数百回は脱着してますが、カチッとはまる感触は変わらず。 シートポストへもしっかり固定できてます。 シートポストが円形でないとダメなのと、角度が変えられないのが弱点と言えば弱点か。

Excellent to pair with the radar light.

Works great. Well built. Better than the original Garmin mount that came with my Varia radar

Lo compré porque el Garmin contaba casi tres veces y quería cambiar la forma de fijar el radar en el poste del asiento. El soporte con ligas me da mucha desconfianza ya que con el tiempo se resecan los o-rings y se puede caer el radar sin que uno se de cuenta. Ha funcionado perfecto y con excelente calidad.