It’s all about racing lines this week. We kick off with a BMW K-series café racer, followed by a classy Moto Guzzi Le Mans II, a sharp Buell Lightning S1 and a rare Rau Kawasaki GPZ1100. We finish off with a quick look at a MotoGP docuseries that’s hitting screens soon.

BMW K100 by Bolt Motor Co. The last bike we featured from Bolt Motor Co. was a no-holds-barred Honda CBX1100 built for a MotoGP legend. This BMW K100 doesn’t quite boast the same level of spec, but it’s still one heck of a looker. Which proves that even when the Spanish shop isn’t throwing everything plus the kitchen sink at a build, they still manage to crank out incredibly attractive machines.

‘Bolt #46’ was built for a customer that wanted something neat, tasteful and predominantly black. But before Adrián Campos and his team could make it pretty, they had to bring it up to spec. That meant an engine refresh with a few key OEM part replacements, and a full rewire. From there, the crew tweaked the BMW’s stance by lowering the forks and installing a custom built Hagon shock at the back. The brakes were overhauled, and upgraded with new discs and Goodridge lines.

Cosmetically, the K’s changes are simple but effective. The stock tank and its ‘wings’ are still in play, but they’ve been modified slightly. The subframe is new, and supports a neat café-style seat, upholstered by Tapicerías Llop. There’s a short fender out fr...