KTM 640 SuperMoto

. The follow-on 1994 KTM 620 Duke and the 1997 KTM 620 EGS/Adventure, both 620 models, were actually 609 cm3.

KTM introduced the 640 Supermoto as a separate more race oriented version of the Duke.

The KTM 640 Adventure R was replaced by the KTM 690 Enduro. Also The Duke, SMC and Enduro R models were designated 690 even though the actual displacement of the LC4 motor was 654 cm3. In the 2011–2012 timeframe all 690s were increased to 690 cm3. The 690 SMC replaced the 640 SC and came with the new 654 cm3 LC4 motor. The 2026 KTM 690 SMC R continues to be available with the latest version of the LC4 motor and KTM ride assist features with an optional Supermoto ABS mode.