2007 Bmw R1200s Sportbike on 2040-motos

BMW Other description

2007 BMW R1200S, Now comes the R1200S, the most powerful production Boxer BMW has ever created and a significant leap forward over the mild R1100S that debuted in 1999. With a purported 122 horsepower on tap and a claimed tank-empty weight of 430 lbs, this sportingest of Boxers is capable of dissecting a twisty backroad during a daytrip or even humbling some crotch-rocket pilots at a trackday. To give you an idea of the S's intended mission, BMW won't offer saddlebags for it. 'It's truly thought of as a sportbike,' says Roy Oliemuller, BMW's head PR guy. But if you're a well-heeled motorcyclist who likes railing corners but no longer is willing to put up with a riding position more appropriate for babies inside a womb, this new Beemer has plenty to offer. At the core of the S is a version of the 1170cc horizontal-Twin engine. Whereas the similar motor in the GS is claimed to crank out 100 hp (and 110 in the RT), this new S boosts the rating to 122 ponies via a host of hot-rod tricks. Mixing fuel and air is the responsibility of 52mm throttle bodies, up 5mm from other models. Modified cylinder heads greet the intake charge, and bumpier cams maximize top-end performance. With a redline higher than any previous Boxer motor at 8800 rpm, most internal components have been beefed up, including stiffer valve springs, reinforced rocker arms, stronger conrods and new pistons that squeeze the incoming mixture at a lofty 12.5:1 compression ratio. The engine exhales through exhaust headers that have been bumped up in size by 5mm to nearly 2 inches (50mm) and a catalytic converter mounted under the transmission. Unleashing all 122 ponies requires premium fuel the engine's knock sensor will dial back ignition advance (and power) if lower-octane petrol is used. The steroid-injected motor is also a key part of the chassis, serving as a stressed member for the three frame components. The triangulated front and center sections are created from tubular steel, but the rear subframe is constructed of square aluminum tubing and is removable for easier crash damage repairs. Up front, 41mm fork stanchions are held by a stiffer Telelever A-arm made from forged aluminum. The EVO Paralever driveshaft/swingarm combo is the same no-maintenance aluminum unit used on the latest Boxers. Firing up the S, the sensations it gives off are similar to other Boxers, but the higher-lift cams produce a rougher idle that shakes the bike and mirrors - the engine feels slightly coarser than the GS's despite the presence of a counterbalancer. Response off the bottom is immediate and healthy, with no hint of a soggy low-end that sometimes results from a more high-strung powerplant. Roll-on performance is exceptional, and more than once I was surprised to see a '6' instead of a '5' on the gear-position indicator after feeling its formidible highway acceleration. Its power surge is linear and predictable yet potent and exciting. Two more notable observations about the engine: This is the firs