Cien porciento original

Awesome love it

 

Todo en orden debidamente empacado en su caja original. Recomendado totalmente

For years, many mountain bikers seeking higher-end hubs would pass Shimano over simply due to the higher weights of their hubs. Starting back in 2017, Shimano decided to upgrade their hubs to make them lighter, silent (their Scylence project), and with faster freehub engagement. They succeeded with respect to engagement and weight but decided to abandon their Scylence project in 2019.Their latest XT hubs reap most of these benefits. The XT HB-8110 rear hub that I ordered weighs 305.4 grams in a Boost config (148 x 12 mm - thru axle), with Shimano's proprietary MicroSpline freehub. This hub also features 18 notches along with two sets of pawls that provide 36 contact points which equals engagement for every 10 degrees of rear hub rotation (360/36 = 10 deg). This is not as many points as other high end hubs like Chris King (72), DT (18, 36 or 54), Industry Nine (690) or Onyx (essentially infinite bc of the sprag clutch) but the upside is less friction. And it keeps the very best aspect of Shimano hubs, ... tried and true cup and cone bearings (which are angular contact bearings). That means when you take the rear wheel and spin it, it will spin longer with less friction than the equivalent DT 240/350, Hope, Chris King or Industry Nine rear hubs (this is because the bearings touch the cup and cone in only two places vs the four of standard cartridge bearings). Provided you service the bearings twice a year, you can keep a Shimano hub in brand new condition 30 years later. The cup and cone system is that good.The downside to Shimano's latest hubs? ... Noise. These XT hubs sound exactly like my Chris King hubs. When you are pedaling they are quiet but as soon as you begin to coast, they make the angry bee sound. Some people love that sound but I do not. Therefore, me being my weird calculus/engineering loving self, I decided to machine some slightly different parts for the free hub. The result is a near silent hub (even under coasting) that drops about 45 grams to 261.3 grams. All told, for the $99 I spent for the rear hub (and the $59 I spent for the front XT hub), this M8100 series of hubs cannot be beat price wise. This hub does not come up to the level of my favorite hubs, the Onyx Vesper series, which coasts without making a sound, but then the XT hubs cost 1/5 as much and weigh less.How is the durability? Well, I am just a bit over six feet tall and weigh 181 lbs (about 190 dighted with all equipment) and have used these XT hubs for six months now for primarily XC and trail riding on a 28 lbs carbon fiber full-suspension bike with no problems. I did hear about a few early users (back in 2019) that experienced broken axles, but Shimano apparently changed the XT hubs design again in the summer of 2019 to correct this. So far for myself, no problems.These hubs are a bit janky to work on, and you do have to take care when removing the freehub and the two springs to clean everything. In particular, there is a wonky plastic spacer you need to take care with. And while Shimano recommends their TL-FH16 seal ring tool to complete the job, you can get by with simply using your fingers. I did an initial maintenance check after the first month just to see how the internals looked and everything appeared fine, with no water or dirt intrusion (although I do all of my riding in central California which is dry and sunny pretty much year round). The Shimano lube was untainted and everything was pristine. Also, if you want the hubs to sound quieter, you can use a thicker waterproof marine grease that will cut down on the noise just a bit.In stock form the XT hubs are four stars but too loud. If you like loud hubs, then they are five stars. For my back-up bike, they are doing great, and after I machined them and removed the noise, I enjoy these hubs more than any others I own except the Onyx Vespers. YMMV.

Excelente

This hubs are very nice, very quite in the trail.