Loyal readers of Asphalt & Rubber will know that I have a soft spot for KTM’s 690cc LC4 engine. The most powerful production single-cylinder motor on the market right now, the 73hp (55 kW) power plant is at home on the street, track, and trail.
For 2021, KTM plans on using this opus in the 2021 KTM 690 SMC R supermoto, as well as the 2021 KTM 690 Enduro R dirt bike.