The KTM Duel-Sport or Adventure line is known for their incredible durability on long distance trips across every type of terrain known to man. With its full fairing body style, windshield, up-right seating position, good suspension travel, and luggage carrying capabilities, the Adventure line is great for both daily commuting and cross-country excursions. From smoothly paved road surfaces to rock climbing, the KTM Adventure will successfully take you there and back again while carrying you and all your luggage.
Though common over-seas, the KTM Adventure did not hit the US market until 1997 with the 620 LC4 being the first one to be imported. It did not sell well, and with only a few being imported before it was discontinued in 1998, the 620 LC4 is a very rare find.
In 1999, KTM imported the 640 Adventure. It was considerably more popular than the 620 which led to KTM selling them until 2007 when it was replaced by the larger 990 model.
Many KTM engines are designated LC4 which means liquid-cooled, 4-stroke engine. The 950 and 990 Adventure models however have a specially designed LC8 engine. KTM took a pair of cylinders from their LC4 motors and combined them onto a specially modified crankcase to create the new LC8 motor. It put out some really nice horse power with the 2003 model claiming 102 BHP at 8,000 RPM.
KTM Adventure Specs
Tires, Battery, and Spark Plug
KTM 620 Adventure Specs
1997-1998 620 LC4
Front Tires 80x100x21
Rear Tires 110x90x18
Battery YTX9-BS
Spark Plug D8EA
KTM 640 Adventure Specs
1999-2002 640 Adventure
Front Tires 80x100x21
Rear Tires 140x80x18
Battery YTX9-BS
Spark Plug DR8EA (1999-2000)
Spark Plug DPR8EA-9 (2001-2002)
KTM 640 Adventure Specs
2003-2007 640 Adventure
Front Tires 80x100x21
Rear Tires 140x80x18
Battery YTZ10S
Spark Plug DPR8EA-9 (2003-2004)
Spark Plug DCPR8E (2005-2007)
KTM 660 Adventure Specs
2000-2003 660 LC4 Rallye
Front Tires 90x90x21
Rear Tires 140x80x18
Battery YTX9-BS
Spark Plug DR9EA
KTM 950 Adventure Specs
2003-2006 950 Adventure
Front Tires 90x90x21
Rear Tires 150x70x18
Battery YTZ14S
Spark Plug CR8EK
KTM 990 Adventure
2007-2012 990 Adventure
Front Tires 90x90x21
Rear Tires 150x70x18
Battery YTZ14S
Spark Plug DCPR8E