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Retro Rocket

June 6, 2018

Kawasaki’s all-new Z900RS offers a welcome trip down memory lane

Story by Jamie Elvidge

Photos by: Don Williams

Bell-bottoms and disco weren’t the only cool things happening in the ’70s. Steve McQueen was still making movies and café racers were the bike du jour. Star Wars, The Godfather and Jaws regaled the masses, while On Any Sunday pulled the heartstrings of riders, describing so effectively the wonders of riding motorcycles.

One of the coolest, fastest motorcycles to have owned in the ’70s was Kawasaki’s Z1-900, with its beefy in-line, cross-frame, four-cylinder engine that utilized cutting-edge equipment for the time, including a double-overhead camshaft system. The Z1 won 46 speed records, including a 24-hour world speed title, solidifying Kawasaki’s position as a major player in the global motorcycle market.

Sequels and dupes of ’70s classics are numerous today – heck, we even have a doppelgänger Trudeau in office. On Any Sunday made a second go and café racers have enjoyed a comeback, but it’s Kawasaki’s Z1-900 reincarnate, the Z900RS, that’s 2018’s finest flashback.

Just looking at the bike makes you want to smile. It seems picnic-ready, where other bikes in Kawasaki’s Z line look ready to start a fight. But don’t let the RS’s nostalgic charm fool you: this bike is all bobcat out of the bag. Fierce, with a snarling howl and enough bite to rip you from its seat.

Wild Cat

The 2018 Kawasaki Z900RS SEThis wildcat’s heart is the 948 cc liquid-cooled, DOHC, 16-valve inline-four found in the Z900, yet it’s been re-engineered with shorter intake and exhaust duration cam profiles and a lowered compression ratio to accentuate low- to mid-range torque. The combination of a 12 per cent increase in flywheel mass and the addition of a secondary balancer, driven off a gear on the sixth web of the crankshaft, work to dramatically dampen vibration.

These changes, combined with overall increases in usability, make for a Z900 that feels more well rounded than any of its family members, so much so that the RS feels more like a standalone model. It’s easy and fun to ride around town in lower gears, with power building steadily in the lower revs until it spools up through a very muscular mid range.

I’ve heard other testers call the RS’s power delivery “twitchy” – too abrupt to inspire confidence during aggressive cornering. I don’t agree. The power is intense at higher rpm, yes, and its ready availability requires a smooth throttle hand, but in no way do I see this punch as a detriment. Perhaps these testers are newer riders or didn’t have enough time to adapt to the bike’s behaviours, because frankly, it’s the surge that comes on above 6,000 rpm that makes the RS so darn fun, especially when you’re charging around town or across mountain roads.

Turning With The 2018 Kawasaki Z900RS SESeeing so much of the engine exposed in such a high-performance motorcycle is always a bit of a thrill, especially in the case of the RS, where the retro vibe is so well infused with its modern componentry: visuals like the beautiful header pipes as they gather into a classic megaphone-style silencer, and how the Kawasaki design team incorporated just enough finning to flatter the modern engine.

Kawasaki says its engineers had never done “sound research” before the RS was in development, which seems surprising considering Kawasaki’s past success in the cruiser market. The RS uses a straight pipe and glass wool packing within the silencer for a seductive and wholly appropriate growl, perfectly matched to this bike’s feisty nature.

Power to the Pavement

The RS shifts tidily using the assist and slipper-clutch design we’ve enjoyed on recent Kawasaki models. First gear is quite short, which makes for some exciting launches. Definitely not a gear you’ll use once above parking-lot speeds, even if the slipper function of the clutch will save you from a wheel-hopping rodeo ride in case of a premature downshift. The bike also utilizes a taller final drive for a more relaxing ride at highway speeds, an attribute I can confirm after many kilometres spent rushing to and fro on California’s high-speed freeways.

Preparing to Ride The 2018 Kawasaki Z900RS SEThe suspension is less sporty than we’re used to with the Z lineup, and consequently more comfortable for a variety of everyday riding situations. The inverted front fork offers 120 mm of travel and features 10-way adjustable compression damping and preload adjustability, while the rear shock provides 140 mm of travel and infinitely variable preload and rebound adjustability. I spent many of my kilometres on the RS tearing across mountain roads, preferring an increase in rebound dampening for a tighter response.

The RS is very agile in all riding conditions, and feels light, if a bit wide, as soon as you throw a leg over, despite its ride-ready weight of 214 kg. The ergonomic triangle is what we’d expect from a standard with a handlebar that’s wider, higher and closer to the rider than the Z900’s. Foot pegs are lower and slightly more forward. It’s easy to relax in this position, yet you can still get your weight closer to the handlebar for extra leverage during cornering, or simply to fight the windblast on a highway stint…

One Comment

  1. A sharp looking bike… yes. However, a reincarnate of the original Z-1 ? Maybe the paint colour, but as an owner and still riding my modified Z-1 for 43 years, it certainly does not have the crowd draw power that the old Z has wherever it goes. And, it can still kick some ass !

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