This third 690 is bred from KTM's works racers, using the same LC4 engine and desert-developed chassis as the SMC. Its airbox also lives above the engine. The self-supporting plastic tank is below the seat with the battery. Wheels are 21-inch front and 18-inch rear, both wire spoke and fitted with wave-pattern brake discs and Metzeler Enduro 3 dual-purpose rubber. The Enduro's road manners are similar to the SMC's, at least in a straight line. Beyond that, the Enduro is a forgiving, capable off-road accomplice. Broad power spread, light weight and excellent suspension get you through all but the toughest sections. Like its brethren, the Enduro's EFI offers alternative fuel maps, including one to digest low-grade gasoline. There's little use for this on the others, but in difficult terrain, especially mud, the low-power option-30 percent less peak power and softer delivery everywhere-makes life easier. That's just one example of KTM's meticulous attention to practical off-road details. Accessories including a larger, 4.8-gallon Baja-style fuel tank will make it even more capable, too. The 690 Enduro may not always get you where you want to go. But when the going gets long and tough, you've got a better chance on this bike than on anything else.