BMW Unleashes 160-hp S 1000 R Streetfighter Motorcycle

In its transformation from 193-horsepower superbike to 160-hp sportbike, BMW detuned the 999cc inline four-cylinder engine a bit by lowering the redline from 13,000 RPM to 11,000 RPM, where peak power is made. Torque is rated at "approximately" 83 pound-feet (the RR makes 82.5 lb-ft), but more importantly, engineers tweaked the torque delivery in the R's favor by redesigning the cylinder-head ducts, modifying the camshaft profiles and reprogramming the engine management system. The result is seven lb-ft more torque than the RR up to 7,500 RPM. The R's torque peak occurs at 9,250 RPM.

The bike comes standard with ASC (automatic stability control) and "Race" ABS. Riders can choose between two modes, "Road" and "Rain," which adjust ABS and ASC settings to suit dry or wet roads. DTC (dynamic traction control) is available as an option, and with two modes, "Dynamic" and "Dynamic Pro," the system optimizes traction and helps riders achieve maximum acceleration.

The R uses an aluminum-alloy perimeter frame, in which the engine is a load-bearing structure. The front wheel is located by an adjustable upside-down fork, while the rear wheel is located by a dual swing arm. The bike weighs in at 456 pounds with a full tank of gas, and to slow the mass, the front brakes are a twin-disc setup with two four-piston calipers, while the rear gets a single brake disc and one caliper.