Suzuki GSXR 750 K6/K7 (2006-07) technical specs, photos and full review

Discover everything you need to know about the legendary GSX-R 750 K6 / K7 — from the full technical specs and performance data, to photos of the different color schemes and design details, all the way to in-depth reviews and real impressions from riders who have owned and ridden this stunning bike, both on the road and on the track.

Let’s not beat around the bush — some motorcycles leave a lasting mark and, in the collective imagination of riders, become true symbols… something iconic.

La 2006-07 Suzuki GSXR 750, also called K6 or K7, is one of these bikes, and it is one for 3 very specific reasons:

1. For what it has continued to represent in the late 2000s, as the last bastion of the 750 supersport motorcycles, which until 2003 were battling - with epic duels - in the Superbike World Championship circuits;
2. For his exhilarating performance - but at the same time 'exploitable'-and its great balance that allowed it to keep up with 1000cc supersport bikes, so much so that it earned the nickname of 'kill a thousand';
3. For the outstanding reliability of its engine which, while reaching 'screaming' up to 15,000 rpm, has always distinguished itself by never missing a beat and being able to withstand any 'mistreatment' given by the most demanding use even on the track.

Many years after its introduction and its removal from Suzuki's listings, replaced in 2008 by the later K8 model, continues to be a frequent subject of discussion And biker talk and a motorcycle still rather coveted for those who want to have fun on the track without facing the financial and physical commitment of running a 1,000cc supersport.

After these premises let's get straight to the point with the main 'numbers' that characterize this iconic four-cylinder from the house of Hamamatsu namely: maximum power, dry weight and maximum speed.

In dyno tests from that time, the maximum power at the wheel turned out to be about 126 HP. A very good value, about 15 to 20 hp higher than the actual power outputs of the various 600cc machines of the day.

The 750 Suzuki, in 2006, was presented in Italy in two colors, the ever-present white-blue Suzuki and an eye-catching fully black.

What does it look like?

It comes from its smaller 600cc sister, uses the exact same frame (aluminum double girder), swingarm and crankcase, this makes it as agile and drivable as a 600 but with a significant advantage in maximum power and its delivery.

Compared with the 600, the Showa fully adjustable fork and with anti-friction treatment, marks a notovele step forward in pecision and riding feel, especially when approaching the limit, on the track.

Also Showa monoshock is new Compared with the previous model, it is lighter and more compact and is equipped with hydraulic compression brake adjustment on both high and low speeds.

The four-cylinder 750 is even more compact than that of the 600 (from which it is derived), and is powered by dual injectors and dual throttle bodies. This is 2006, and there are no electronic driving aids--on the brakes you can still count on the slipper clutch, present as standard on the GSXR 750 k6 / k7.

Also characteristic of this model is the exhaust system, equipped with electronic exhaust valve and of short terminal, very aesthetically pleasing.

Coming to the brake department we find a pair of 310 mm front discs bitten by some 4-piston radial calipers of Tokico and commanded by a brake master cylinder also radial.

To conclude, the instrumentation of the GSXR 750 is mixed, analog-digital, the tachometer on a white background is very large and 'racing'-style, perfect for track use, the gear shift indicator is also excellent, and all the lights and indications on the small display are very readable, including the speed readout.

Still relevant, we can say with the certainty of not being proven wrong, most of the bikers who still own a GSXR 750 k6 / k7 example are proud of it and consider it a thoroughbred supersport.

How it goes on the road

In summary: light, responsive and with a fairly exploitable engine on the road, powerful braking that tends, however, to 'stretch' a bit in hard use. Impeccable set-up... on the narrow mix it is incredibly effective.

Driving position quite hospitable for a supersport, not excessive fuel consumption and super-reliable engine.

Known flaws:

• Electrical system not always top notch, the power regulator tends to fail due to excessive overheating, it is solved by moving it to a more ventilated location or replacing it with other compatible models.
• Spongy braking under stress, installing braided brake lines is highly recommended, an aftermarket master cylinder also helps a lot.

How it goes on the track

Lightning-fast curve inputs, easy to exploit in corner exit and stable on fast... on the track there is a lot of fun, without the worry and fatigue of having to manage herds of rampaging horses. Changes in direction are very rapid.

Among the curbs, however, emerge the limitations of the standard braking and suspension system, if you want to ride and have maximum safety and performance, it is essential to replace these components with parts designed for the most extreme use. Once this is done you will have a vehicle ready to grind miles on the track under the motto 'low cost and high yield'.

The right tires for the track will complete the work, in which case our advice is to mount a rear tire with a higher shoulder. As confirmed by the many motorcyclists who use it exclusively on the track, mount a 180/60 on the rear (instead of the standard 180/55) provides superior grip and even more agility in cornering, this is because of the more 'pear-shaped' profile that comes with this size.

Technical specifications.

Customize final gear ratios

Finally, if you own this bike and want to know how much they vary - in percentage terms - by. Torque and top speed with the different combinations of final ratios, know that there is a free resource available from us that will help you discover this valuable information.

Find out how access for free through this link.

Thanks to the final drive ratio calculator You will understand how to act on the pinion and sprocket and customize the Suzuki GSX-R 750 based on your needs.