Ibera Bike Rack - Bicycle Touring Carrier Plus+ for Disc Brake/Non-Disc Brake Mount, Fat Tire Bikes, Frame-Mounted for Heavier Top & Side Loads, Height Adjustable for 26"-29" Frames

Good rack, not designed for bikes with Boost rear axle spacingI knew when I bought this rack that it was designed for the ‘standard’ rear axle spacing of 135mm that is used on bikes with 9mm quick-release skewers, and not the newer ‘Boost’ rear axle spacing of 148mm that is used on most modern mountain bikes that have 148mm x 12mm thru-axles. What that means in practical terms is that the cylindrical spacers provided are twice as long as necessary when the rack is used on a bike with Boost spacing. These spacers are 7/8” long and made of aluminum so they are very easy to cut if you are comfortable with that sort of thing. I simply cut one exactly in half and that made the width of the rack a perfect fit for the mounting lugs on my bike. Shortening the spacers required me to also grind down the length of the provided mounting screws to match the shorter rack+spacer dimension. You could simply go to the hardware store and buy shorter machine screws, but it was easy for me to just grind the provided screws to the length required.There was one other fit issue that was due to the frame geometry of many mountain bikes. The provided front carrier mounting arms were too short to work on my mountain bike. In general the angle of the seat tube mountain bikes use is quite a bit steeper than what was used in the past. The end result of that geometry is that the top rack mounting lugs on the bikes frame are a bit farther forward on the bike than older design bike frames. My bike is a 29er and that also stretches out the length of the bike a bit due to the larger wheel and tire. Bottom line is that the provided front carrier mounting arms are too short. To their credit Ibera does sell longer front carrier mounting arms on their US distributors website and they are a reasonable price. One other small bit of information that may be helpful to anyone trying to order the right parts is that the chainstay length of my bike is pretty short, 440mm. Before I had the actual rack in hand to check the fit, I hoped that short chainstay length might allow me to squeak by with the provided front carrier mounting arms. Even with that fairly short chainstay the arms were still too short for my bike. My guess is that any 29er with longer chainstays would also require the accessory longer front carrier mounting arms. I also bent the carrier mounting arms to match the radius of my tires just because I thought that looked better.I bought the rack knowing that I would have to do a bit of work to make it fit my bike properly. As far as I could determine at the time I bought this no company makes a rack that is specifically designed to fit modern mountain bike dimensions. But this rack can fit perfectly with the addition of the optional longer front carrier mounting arms and just a wee bit of work cutting the supplied cylindrical spacers to the length needed. The rack is good quality, fits perfectly with the changes detailed above, it easily clears my disk brakes, the provided machine screws are excellent quality, and it is rock solid on the bike. Just an FYI for comparison, I have installed the non-disk brake version of this rack on two other bikes in my family, not modern mountain bikes, and those racks fit their bikes perfectly with no modifications or extra work required.

This attached to my Trek 7.5fx perfectly. Its very sturdy and easy to install. I would definitely recommend this product to anyone looking for a rear bike rack.

Easy to install, and fits well

GOOD:All the screws were included.Instructions were clear.Build quality is very good and it looks right at home on my matte black commuter bike.Has additional lower rack bars, so that you can hang your panniers low and still put something on top of the rack.I really like the back plate that allows you to mount reflectors or lights.Comes with small adjustable bungee eyelets near the lower mount, which are handy. (manual does not mention, but they're in the little picture)BAD:The forward arching bars that attach to the area of the frame near your seat post are offset way too much. And the blocks they attach to are in a channel that prevents pivoting of the mount. This did not fit my bike where the screws are only separated by 2.5". I tried every possible orientation but because my mounting locations are not +4inches apart, I had to reverse the blocks and the bars, such that the allen head locking screws were on the inside rather than the outside. There is little to no room on the inside so I did not have space to turn the screw easily and had to get creative.SUGGESTIONS:To manufacturer. You have a good product. Please consider either reducing the offset of your front mounting bars OR making it such that the swivel block they attach to can swivel left to right in addition to the current up to down only. Those of us who mount to the frame vs the forks need an option for close-together mounting with the locking screws facing out.RECOMMEND??Absolutely. It was some work to mount, but the overal design is very nice and appears to be well thought out. Anyone looking for a quality rack should put this one on their short list.