I really enjoy riding my Allant 9.9S...once I got the bugs worked out.
I avoided any issues with the phone by upgrading to the Nyon display before taking delivery. I much prefer a purpose designed device instead of trying to do everything with my phone. It has worked out just as hoped.
I had problems with one of many faulty Shimano Mircro Spline rear hubs. It had to be rebuilt after 300 miles and then failed within another 200 miles. Trek was terrific about lending me a wheel from one of their mountain bikes that fit until the were able to obtain an Onyx hub that had been recommended by their service tech. This was not an uncommon problem when the bike first came out. I presume they have worked things out with Shimano and no longer have this issue.
The other piece that I had problems with was never resolved to my satisfaction. The headlight run ridiculously hot to the touch and consumes at least 10% if not 15& or more of the battery power. There is a sensor in the tail light that is supposed to put the headlight in a flashing daylight mode but it only works with there is direct sunlight, no clouds, and the sun is shining directly on the tail light, which is to say it hardly ever works. Trek replaced both lights once and told me they were working on solution but never came through with one. To their credit they did send a Supernova M99 pro which was specified on their earlier Supercommuter. However it turned out that it would not work on the Allant. The OEM light is a nice bright headlight with a powerful high beam but I never use it because of its extreme power consumption. I use a rechargeable headlight and tail lite, to get the most range out of the battery and avoid the problem.
I have almost 4,000 miles on the bike now and it has been flawless in its operation with the exception of the lighting. I made a few mods to the drive train that really kicked the bike up a couple of notches. I swapped out the derailleur and shifter for the wireless Sram AXS system which is expensive and fantastic. I also swapped out the cassette for the Shimano XTR 11-51 tooth as I live in a very hilly area and wanted the lower gear ratio of the 51 tooth cog. The XTR is expensive as well with its 5 titanium cogs but one can replace the four smallest steel cogs for around $35 which can triple the life of the cassette.
To gain some added compliance front and back, I added a Baramind CIty Suspension handlbar and a Kinekt Suspension seat post. Both did what I had hoped to smooth out the ride.
I also replaced the tires with Schwalbe Hurricane's which have better rolling resistance and are whisper quiet, with great road grip and good traction on trails. I put lightweight Tubolito inner tubes in them. I have had only one flat in them in almost 2,000 miles.
I did outfit the bike with the piggy back range extender battery kit for longer rides or rides in the mountains. I don't use it often but when I do I am sure glad to have it.
It has been an extremely reliable bike with very few problems other than those mentioned above. It is my wife's favorite bike to ride when we ride together. Aside from the light issue the local Trek store and Trek corporate have been excellent to work with. The Allant 9.9S is a great bike and should give you many miles and lots of smiles.
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