Team Green’s 400-class pocket rockets are coming to Canada this year! According to Canadian Kawasaki Motors, the ZX-4R and ZX-4RR are both slated to arrive here this year, bringing high-revving four-cylinder fun to trackdays across the country.
The new ZX-4 platform is a big-bored version of the ZX-25R that debuted in southeast Asian markets mid-2020. That bike made a whopping 50 hp from its tiny inline four, thanks to a 15,500 rpm redline. The new ZX-4 models are limited to 11,5000 rpm, thanks to Canadian noise regs, so we don’t know how much power they will make—but we bet that any regulation-induced restrictions will be gone as soon as a resourceful owner re-flashes the ECU.
The liquid-cooled DOHC engine comes with six-speed gearbox and assist/slipper clutch, and in ZX-4RR trim, a quickshifter is standard. Cylinder capacity is 399cc from an oversquare 57 x 39.16 mm bore/stroke.
Both the R and RR variants have four ride modes (Rain, Road, Sport, and Rider-adjustable); the ride modes are controlled from the bike’s TFT screen. The 4.3-inch screen also shows you which traction control level you’ve selected (there are three to choose from), along with speed, rpm, fuel capacity, gear selection, and there’s even a Circuit mode that helps you keep track of lap times, etc. The TFT can also be paired to your phone via Bluetooth to let you see incoming calls and messages.
Both the ZX-4R and ZX-4RR have dual 290 mm disc brakes up front, mated to radial-mount monobloc calipers with four opposed pistons. There’s a single-piston caliper in back, and 220 mm disc. ABS is standard.
Both bikes also have Showa suspension; the ZX-4R has a SFF-BP fork (split-function design), and a preload-adjustable rear shock. On the ZX-4RR, the SFF-BP fork is preload-adjustable and the BFRC lite rear shock is fully adjustable. Dunlop GPR300 tires are mounted to 17-inch five-spoke wheels.
Pricing for the sporty new 400s is a lot more than existing entry-level machines like the Yamaha R3 or the Kawasaki Ninja 400, but this four-cyl is targeting a much different market than those budget-oriented beginner machines. The ZX-4R comes in at $9,999 in Canada, plus taxes and fees. The ZX-4RR is $10,999. Find more info at Kawasaki’s Canadian website.