The shifter are 3x8 sora is I remember correctly. I believe the 3300 models. The travel agents worked as far as more immediate braking power and feel but often didn't let the brake fully open. Most times they would stick and make the pads just rub on the rim. So I took them off, did some adjustments and they work great with the 85mm arm. I did try the 80mm tektros and they did not work well for my application. As far as discussed brakes they look sweet!