Oh, this is cool. To be sold alongside the standard Honda CB1100 in Europe, the new CB1100 RS is:
“Stripped back and lean, the CB1100 RS has the look of a 1970s race bike, with more than a hint of café racer. The curvaceous fuel tank – made without seam-welded lips – evokes hand-made craftsmanship, while the single round headlight and twin instrument dials outline a timeless silhouette. Adding crisp-edged modernity, all lighting is LED.
“Backing up the sportier styling, the CB1100 RS’s chassis uses sharper geometry than the EX, with firmer Showa suspension, front radial-mount four-piston brakes, cast aluminium 17-inch wheels and sportbike-spec tire sizes. A lower, more compact riding position moves the rider’s weight forward, complementing the chassis changes.
“The air-cooled four-cylinder engine breathes more easily thanks to a revised inlet tract and smaller, lighter 4-2-2 exhaust system while an assist slipper clutch makes for easier lever engagement and rear wheel stability on downshifts.”
More specifically, rake is steepened a smidge, trail is cut from 114mm to 99 and wheelbase is shortened 5mm to 1485, to bring you a sharper-handling modern vintage bike. A 43mm Showa “Dual Bending Valve” front fork carries the front wheel, while the rear spins in a new swingarm suspended by a pair of remote-res Showa shocks.
Instead of the weird 18-inch wheels on the standard CB, this bike gets 17s in normal sizes, 120/70 ZR17 and 180/55 ZR17, which will aid performance in all kinds of ways including a 3% increase in acceleration due to the gearing change of the smaller rolling diameter of the rear.
The coolest bit is that 4.4-gallon fuel tank that does away with the seam-welded lips along the bottom edges. New brushed alloy sidepanels, a slimmer seat and a bunch of other subtle styling cues make this one for the CB connoisseur.
That air-cooled 1140cc inline Four remains unchanged, but the four PGM-FI 32mm throttle bodies are fed through a shortened air inlet tract and new air cleaner, and work with a pair of shorter chrome-plated mufflers to boost low and mid-rpm engine response.
Finally, the RS gets a slipper clutch with a die-cast aluminum cam and slipper cam that saves weight, reduces lever effort by 16% and minimizes rear wheel ‘hop’ on crazy downshifts.
Meanwhile, the CB1100 EX gets all the same upgrades as the RS, but continues on with redesigned 18-inch spoke wheels wearing 110/80 R18 and 140/70 R18 tires. Smaller aluminum hubs lace the wheel rim with 40 longer stainless steel (rather than 48 before) zinc-plated spokes. Twin 296mm floating discs up front are mated to four-piston Nissin calipers, with a 256mm disc and single-piston caliper at the rear. ABS is standard.