I have a Specialized Allez 2010 road bike which I want to convert to a flat bar. I have done some research and as a newbie, bit confused about the compatibility.
What I have currently
Rear D: Shimano Claris
Cassette: Shimano 8 speed 13-26
Front D: Shimano Claris
Brakes: Shimano Claris R-2000
Shifter: Shimano Claris 2/8 Speed
I want to change it to the following
Brake levers: Shimano Sora R-3000/Tiagra/Deore BL-T611
Cassette: Shimano HG-50 9 Speed 12-25
I want to keep the chainrings and Front D as they would be more expensive to replace. My question would be if this new config is possible. Otherwise, I will go for a more simple setup with only changing to Claris ST-RS200/-RS203 Gear/Brake Lever. It will cost me quite the same but less hassle. On the other hand, I am thinking if I am spending money why not upgrade to a new setup as I am also changing the wheels which have a 10-speed hub.
I would really appreciate some advice.