You'll need Short pull Brake levers.. Center pull, Canti, ROAD disc,and Side pull brakes use Short pull levers. Measure from the Lever Pivot to the Center of the cable ferrule hole.. Short pull levers measure about 28mm... LONG pull levers (for long reach V-brakes and MTB Disc) measure about 32 to 35mm... This will make finding the correct pull Levers easier when they are just tossed in a box at a Co-op. TEST the lever clamps on YOUR Chosen flat bar to ensure they will fit... and don't let any Burrs on the ends of the bar trick you, Clean the burrs off with a file Before testing.
MTB standard lever bar clamp diameter is 22.2 mm or so.. Road levers are a 24mm lever clamp size, roughly.
oh, and a mismatch of pull length will have you not stopping well, and possibly winding up seeking a new front wheel, front fork, frame, and a good denture sculptor... so don't ask or assume, just MEASURE.
Last edited by maddog34; 01-14-23 at 06:08 PM.