Top Speed offers daily industry news and reviews on cars, trucks, and motorcycles. 2019 - 2022 KTM 690 SMC R. KTM's favorite jackass bike is back and better than ever. 2024 ktm 690 smc r 2024 ktm 450 smr ktm academy of speed . race. rest. repeat . learn more enduro dominance . 2024 ktm enduro range back to top The renowned 690 cc LC4 motor in both the bikes is the most powerful single-cylinder engine in the market. It produces 74 hp and 73.5 Nm of torque. Thus reaching a perfect 1:1 horsepower, torque ratio. Transmission duties are handled by a 6-speed gearbox with KTM’s Quickshfifter+, slipper clutch, and Ride-BY-WIRE. Pfol.