Cygolite Tail Light Rack Mount - for Hypershot, Hotshot Pro, and Hotshot Series Bicycle Taillights with Hard Mounts (Genuine Mount) Small

Unfortunately, you can't use the excellent Cygolite seat post mount that ships with your taillight if you have a step through frame. Transport requires a cross frame adapter. The entire weight of your bicycle will rest on the seat post mount and your mount will get smashed or knocked off.I tried this bike rack adapter first. It cost 4.95 USD when I bought it and I rated it as OK. But I didn't like how low to the ground the flasher was. I returned it and bought the Cygolite saddle rail mount in it's place. That turned out to be a serious downgrade for me. The saddle rail mount fits very badly due to its poor design. Please see my lengthy review of the Cygolite seat rail mount.Both options work, but I'm revising this review to say that this rear rack mount is the better option if your individual situation allows. The design is very good. The fact that your flasher ends up lower to the ground is inherent in the mounting location and is unavoidable. However, do consider the fact that any bike rack mount will leave the flasher exposed to all the water and muck thrown up by the rear tire. You should be a "dry weather only" sort of bicyclist or have a capable rear fender.

Easy to install, high quality and easy to attach and remove light for charging.

Perfect except I'm going to have to pick up replacement nuts and bolts. I can't get the bolts to tighten the gadget to my rack. It's secure but it's loose. And I'm thinking since I have to get replacement bolts I might as well get them long enough to attach the gadget to the milk crate I have ziptied to my rack so I can raise the line of sight. (Don't get grossed out by my milk crate. It's grey so it matches my bike AND it works great hauling my groceries which is sometimes 6-2 Lts of diet soda!) Anyway- the gadget is perfect and maybe you have the right wrench with which to tighten the nut. I was using needle nose pliers.LATER: I got lazy and used blk zip ties to connect the gadget to the crate. It's sturdy and the zip ties match and it saved me a trip to home depot. I'm really happy with the light being higher up. I like the gadget because I can just snap off the lite and I don't have to worry about anyone borrowing it!

While I don't like to rate reviews on shipping I must say that this item came 2 days before the expected time. Excellent. Now, the mount itself is great. If using on a Topeak Explorer rack you will come across some difficulties if you don't heed my warning. Here is how to install:1. Use a ratchet screwdriver with a 5/16 nut.2. Make sure that the hex portion of the screw is facing in the same direction of the light (don't place the nut under your Topeak rack).3. Use a 5/16 bit4.. Scrunch your hands and finger tips small enough to get under your Topeak rack and begin to turn.This is made out of a decent amount of plastic. Nothing extremely durable. If I was riding a mountain bike I'd probably have to buy a few more spares considering the bumps a MB takes. For my hybrid I think I should be fine, even though there are those occasional pesky pot holes. My main concern with the plastic is the outer side of the nut. As you begin to tighten the bolt from underneath your rack the outside plastic will being to wrap and strip. Just be sure to not tighten too tight.I use this with the amazing Hotshot SL 50 Cygolite rear back light. I love this combination. I've been riding for 5+ years and I'm not sure why I haven't purchased this combo sooner. I highly recommend this mount.As you can see in the pictures there are 2 options for where you would like to place the mount. I chose the higher area of my Topeak rack so it wouldn't bump my tire if I hit a crazy hole. Something that hard would probably damage my rim but just in case....

Normally I mount my Cygolight tail light to the seat post of my bicycle. When items are piled up on my back-rack, those items sometimes block the Cygolight. That is when I move the Cygolight to this auxiliary mounting point on the rear of the back-rack. It works very well! I am 100% satisfied with this Cygolight mount!

The mount fits onto my rack, although my rack has only one hole, so the mount will move a bit. That is not really an issue. This mount is sold as a package with the Bike Planet Superflash Turbo. Great light. However, it does not fit on this mount. I suppose that I should not fault the mount by giving it only one star, but I do not want others to make this same package purchase and be disappointed that the two do not work together. The clip on the back of the light is too wide for the slot on the mount. Someone did not do his homework when creating this package. The light itself comes with two tubular mounts, but I purchased this package to fit on a rack. I do not have a fix for this, and would be happy to hear from other users about the kind of mount that would do the job for me. In the mean time, do not waste your money on this package if your goal is to mount it on a rack. Very dissatisfied customer.

Mount fits perfectly on my Topeak Explorer rack, used the top hole on the rack and the mount has a round plastic tab that fits into the lower hole, keeping it aligned vertically.Insert the hex bolt into the mount face and use the nylon lock washer in the rear.I added a thin 5mm washer before the lock nut, and an 8mm box wrench to tighten.A second bolt and nut are included, but not needed for my rack.Once snugged-up the mount isn’t going anywhere.The flexible locking tab that hangs down from the mount is a bit stiffer than the one that came with my HotShot 50, but it works, takes a little more effort to bend the locking tab back to release the light. There’s less of an audible click when inserting the light, but it is secure once installed.

Solid mount for fair price.