Faults:

The brakes are very 20th century. The six-piston calipers are prone to corrosion and difficult to bleed properly. They need to be serviced every two or three years: disassembled, cleaned, and the seals, fluid, and pads replaced.

I recommend frequent and thorough cleaning of the calipers or considering replacing them with four-piston calipers from other Kawasaki or Suzuki models.

Then there are minor ignition system failures, problems with the lights or instrument panel.

The batteries fail or don't have the correct voltage, preventing the motorcycle from starting.

The gas tank should also be checked frequently, because the drain can become clogged, causing water to enter the tank and contaminate the fuel.

General Comments:

A fantastic motorcycle that does it all. For commuting, touring, and track days. Incredible value for money. No computers, riding modes, or any other modern gadgets. The most technologically advanced feature is probably the digital clock/odometer! And it has carburetors and a fuel tap. (No low fuel warning light on the instrument panel.) I love the 20th-century innocence of this bike.

The best thing about this bike is its classic style: its 90s paint job, carburetors, analog instrument panel, comfortable semi-sporty riding position with plenty of space and a decent passenger seat, and the absence of sophisticated electronic gadgets. It all depends on you and your control of the bike.

It's still pretty fast for a classic 600 and will put a smile on your face when you floor it. The intake sound and the roar of the stock exhaust at full power sound fantastic. What attracted me to the 6R was that, to me, it had a sportier character than a CBR or a Thundercat from the same era.

The engine is a fantastic machine. Runs beautifully, with no smoke or unusual noises, and delivers power very smoothly and linearly. It's easy to handle, yet offers enough acceleration and high-end response to satisfy most riders. It's easy to see why they were so popular back in the day, but you still need to be careful and moderate, as it doesn't hold back when you reach the top end.

It responds wonderfully from low revs. It performs just as well at 4000 rpm as it does at full throttle on the redline. Mine has been consuming a little oil lately; just check the level regularly.

In my opinion, the '99 ZX6R has no downsides; it's robust, fast, easy to handle, and looks really good—better than the newer models.

Excellent engine, good handling, and reliable. And the green color is the best.

Faults:

Nothing that I can think of apart from alarm and immobiliser were a pain in the backside.

General Comments:

I had the 2002 dream machine Valentino Rossi bike with race exhaust and remapped engine; it was fast but skittish at speed, and my 98 Fireblade was much more comfortable.

Faults:

I've had issues with my carbs getting out of sync, but other than that, this bike is the best, quickest and fastest bike I have ever owned.

General Comments:

I've owned many motorcycles in my day. From Yamaha, Susuki and Kawasaki (no Hondas), from 1000cc to 250cc, and this bike ride like a light cycle from Tron. It'll will outrun any litre bike all the way to 140. I'm 39 and this is my way of staying young (crotch rocket). My wife bought it for me as a welcome home present from Afganistan, and it has been my escape from reality. I would suggest the ZX6R to anyone who is looking for an escape. Not to mention it's just a lot of fun to modify in your free time. Dyno last year at 137 rear wheel hp.