He posted the ZX6RR evolution / racing system notes... here's the ZX6R evolution / racing system notes:
KAWASAKI ZX 6 R 636 (2003) AKRAPOVIC RACING & EVOLUTION LINE
The other half of this year’s ZX 6. Only the engine of the Kawasaki ZX 6 R is different from the ZX 6 RR. The R version has a larger engine displacement from last year’s model and unlike the 6 RR does not fall into the WSS class. In other words, this is a bike with a lot of technical achievements which are very welcome among motorcycle riders. The Kawasaki ZX 6 R is a fantastic 600 class machine.
Those who choose the R version of this year's Kawasakis will not have to do without an Akrapovic component. On the basis of our experience working with the Kawasaki factory racing team, we have developed complete Akrapovic RACING and EVOLUTION exhaust systems for the ZX 6 R. You too will be the happy recipient of a few extra horsepower.
ABOUT AKRAPOVIC RACING & EVOLUTION SYSTEMS
The Akrapovic RACING and EVOLUTION systems for the ZX 6 R are 4-2-1 configured. Of all these pipes, unfortunately only the “1” will be visible, i.e. the link pipe and the muffler, while the rest will be covered by the striking cowling of the new 6. Both systems are composed of conical elements, which is a standard characteristic of our top exhaust systems. The RACING system is constructed of high-quality stainless steel, while the EVOLUTION uses exotic titanium.
Both systems offer the particular satisfaction of the filigree welds, which are also one of our house specialties. Of course these welds are used only to join the conical elements, while the individual parts, i.e. the header tubes, collector, link pipe and muffler are held together using free-floating connections which are fastened using high-quality silicon-shielded tensioning springs.
The results of prototype testing of both systems have shown that the power curve is improved with the addition of interference crossover tubes. Therefore both systems come with these tubes installed.
Only the EVOLUTION model exhaust system includes a fitting for installing a lambda sensor.
The Racing system is available with an optional titanium link pipe.
Looking at the back end of the system, we can see that the muffler is the familiar Akrapovic oval section. The system uses the stock chassis hanging bracket, which is used to attach the famous Akrapovic carbon-fiber clamp. With this configuration the passenger footrests can still be used.
When mounting the carbon-fiber clamp onto the stock chassis hanging bracket, bear in mind the correct orientation (right offset) of the clamp viewed from the rear. SEE INSTRUCTIONS!
Both the RACING and EVOLUTION systems can be ordered with an optional carbon-fiber hanging bracket which replaces the stock bracket. The carbon-fiber bracket guarantees maximum compactness and also lighter weight. The muffler is mounted in a slightly higher position.
When using the carbon-fiber hanging bracket the passenger footrests cannot be used. The carbon-fiber clamp is installed in the opposite direction – left offset when viewed from the rear. SEE INSTRUCTIONS!
Before purchasing an exhaust system, take some time to decide which type of muffler outer sleeve you would prefer: carbon-fiber, with the racing look of its black checkered pattern, or titanium with its refined satin sheen. The performance and sound are the same in both cases; the only difference is the aesthetic effect.
Measurements of the Akrapovic RACING system on the Kawasaki ZX 6 R:
More power at the top of the rpm range is the identifying characteristic of the Akrapovic Racing and Evolution exhaust systems, and this Kawasaki is no exception. The boost in power begins only at 9000 rpm and runs into the overrev range. 111.8 HP at 12950 rpm is the measured max. horsepower on the rear wheel, i.e. 4.1 HP more than the stock system, but that’s not the maximum increase, which is a further 1 HP. Up to 9000 rpm there is no great difference in power using the Akrapovic system.
The racing nature of the Akrapovic exhaust systems for the Kawasaki ZX 6R 636 is also reflected in the torque curve. Once again the increase is only apparent from 9000 rpm onwards, where together with the power curve it follows the commands of the rider.
Another parameter which characterizes our exhaust systems is lower weight. With the Racing exhaust system you will save 4.18 kg, and even more with the Evolution system. Whichever you choose, this savings is exceptionally welcome!
By choosing an Akrapovic exhaust system you give your bike a bit of true racing spirit. The deep, piercing sound and the recognizable red scorpion on the logo will only be further proof of this.
"Keep yer feet on the pegs and your right hand cranked."