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I have ridden a lot of electric mountain bikes in the last 5 year, and I must say that I was really impressed with the performance of the S-17-1500W from Aostirmotor Ebikes.
The 1500W motor is incredibly powerful, and it never lacked the torque or climbing ability when I took it some pretty gnarly off-road trails. Whenever testing a new ebike, the first thing I do is ride it like a conventional bike, using only the mechanical drive train. In this case, the 7-speed Shimano Sunrace gears were super impressive, with a smooth transition between gears, and an excellent gearing range.
But the S17-1500W was even more impressive when using the 5-level Pedal Assist System (PAS) and the right-side half-twist throttle. The speed sensor was very responsive, sensing the smallest changes in the amount of torque I applied to the pedals.
Have a look at the performance of this powerful Aostirmotor S17-1500W ebike as it's being ridden on various terrains.
In this video are step-by-step instructions to assist with the unboxing and assembly of your new Aostirmotor S17-1500W ebike.
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is it programable to get more speed and if so how?
Yes, the max assist speed for the S17-1500 can be increased from 31 mph to 40 mph using the display. Here is a video showing how to program this change.