Kawasaki ER-6n Review

The ER-6n may have an odd name and a weird schnoz, but it’s one of the best bangs for the buck in the 2009 model year. It’s a zippy commuter rig, an agile backroad scratcher and a reasonable light-duty sport-tourer – it’s a modern interpretation of a do-it-all roadster, all for a palatable $6,399 entry fee.

The ER-6n can be best described as a naked version of the revised-for’09 Ninja 650R, and they share a new steel-trellis frame. Kawi engineers used computer modeling to come up with a revised rigidity balance, allowing a measure of tuned flex for improved handling. The frame itself is said to be nearly as light as a comparable aluminum-alloy unit, and it boasts an upgraded finish over previous 650Rs. Both chassis also share an offset lay-down rear shock and a relatively long tubular-steel swingarm that offers extra rigidity to balance the frame’s extra flex.

You’ll also find commonality in the engine room, as both the Ninja and the ER use the compact 649cc parallel-Twin with 4 valves per cylinder actuated by double overhead cams. Both also share electronic fuel-injection systems with 38mm throttle bodies; sub-throttle valves mimic the smooth response of constant-velocity carburetors. Changes to this engine from the previous 650R consist only of a larger airbox and revised ECU mapping.

Although the ER is sure to find friends among pragmatic experienced riders, the bike has also been developed to please beginners. As such, it has such rider-friendly aids as an automatic fast-idle program to make simple cold-starts, adjustable clutch and brake levers to accommodate a variety of hand sizes, and a non-stressful upright riding position. The new frame is narrower at its midsection, allowing a slimmer seat for a shorter reach to the ground from the relatively low seat height of 30.9 inches. The ER’s transmission is also equipped with Kawi’s neutral-finder design that eases access to neutral when stopped.

Punch the starter button and the 649cc Twin blats out a tune familiar to anyone who’s heard a Ninja 650, as it has the same under-engine muffler and bullet-shaped exhaust tip. A light clutch pull eases commuter duties, and a responsive pull from the torquey engine keep you one step ahead of cage traffic. ZX-style mirrors are stalk-mounted on the handlebar to offer a clear view of the vehicles you just left behind.

Kawi’s Vibe-Away Program

While a 90-degree V-Twin like a Suzuki SV650 or Gladius has perfect primary balance that inhibits vibration, a parallel-Twin like the ER’s transmits some primary and secondary forces that make their way to a rider. Kawi’s Vibe Police stepped in this year with several updates to quell any bothersome trembling from its inline-Twin.

A balance shaft returns to duty in the ER/Ninja, and this year it’s augmented by the upper-rear engine mount being damped by rubber bushings. In addition, the tubular steel handlebar is rubber-mounted to inhibit vibration, and the bike’s footpegs are rubber covered. Even the bike’s handy grab rails are mounted in soothing rubber. Vibration from the previous Ninja 650R wasn’t excessive, but it’s now been reduced to inconsequential levels.