YZF-R6 vs ZX-6R Acceleration and Top speed
Yamaha YZF-R6 vs Kawasaki ZX-6R 636 top speed and acceleration data through the gears accompanied with Dyno curve and thrust curve graphs.
– ZX-6R – YZF-R6
Both motorcycles compete in the same class but the Kawasaki ZX-6R has a 37 cc advantage over the Yamaha YZF-R6
On the dyno the ZX-6R produces 117 horsepower at 13500 and 48 ft/lb of torque at 11500 rpm.
Yamaha’s YZF-R6 trails the ZX-6R producing 110 horsepower at 14800 rpm and 42 ft/lb of torque at 11100 rpm.
Not only does the ZX-6R make a lot more peak horsepower and torque, but it also dominates significantly throughout the entire rpm range.
This massive torque and horsepower advantage ensures that the ZX-6R has a distinct advantage in the real world which often means that the ZX-6R can run a higher or drive from 2000 rpm lower.
The ZX-6R curve is much smoother with less peaks and troughs while the R6 has many little flat sports and peaks. The R6’s curve does not feel so bumpy on the road, but the little dips and surge are still noticeable.
You must keep the YZF-R6 engine above 10000 rpm if you want to get a move on, anything lower and it really feels lacking compared to its competitors. While one of the fastest 600s it certainly is the peakiest and requires the most commitment.
The ZX-6R on the other and feels like jumping on a 750 after the R6. It drives well from as little as 600 rpm making it one of the best if not the best overall engine in the 600 Supersport class even if Kawasaki cheat with their 37cc engine capacity advantage.
It does seem that the R6 does suffer a little more from noise and emissions restrictions and they certainly wake up when paired with a de cat exhaust, filter and ECU flash.
– ZX-6R – YZF-R6
The above graph shows the torque curve multiplied by the gear rations. The lines you see is the acceleration you feel when you open the throttle.
As you can see the ZX-6R dominates in all gears and at any speed if comparing the same gear. The ZX-6R runs slightly higher gearing for all gears but still have enough torque to still provide more acceleration in any gear.
The ZX-6R engine is so strong that from 70 mph in sixth gear the ZX-6R can out accelerate the R6 even if the R6 was using fifth gear. There is just nowhere the R6 can match the ZX-6R.
What the thrust curve demonstrates is that in any gear at any speed if rolling on the ZX-6R will be more accelerative than the Yamaha YZF-R6.
|Speed at 5000 rpm||ZX-6R 636||YZF-R6|
|Speed 1st Gear||25.4 mph||24.5 mph|
|Speed 2nd Gear||32.8 mph||31.6 mph|
|Speed 3rd Gear||39 mph||38 mph|
|Speed 4th Gear||45.1 mph||43.8 mph|
|Speed 5th Gear||50.8 mph||49.2 mph|
|Speed 6th Gear||55.6 mph||55 mph|
– ZX-6R – YZF-R6
The ZX-6R dominates on the dyno and when it comes to in-gear thrust but it’s a little closer when it comes to acceleration though the ZX-6R has the slight edge.
0-60 mph for both is almost neck and next but has the ZX-6R a few bike lengths ahead with a 0-60 mph time of 3.17 seconds versus Yamaha’s R6 at 3.19.
The ZX-6R remains slightly ahead up when accelerating from 0-100 mph too at 6.02 seconds versus 6.08 seconds for the YZF-R6.
The ZX-6R then goes onto the quarter mile in 10.74 seconds with a terminal speed of 134 mph with the R6 a fraction behind at 10.89 seconds with a terminal speed of 133 mph.
As the speeds increase the ZX-6R starts to take control and slowly move away from the R6 as it clocks a 0-150 mph time in a very impressive 15.42 with the R6 at 16.12 seconds.
From then on the R6 gets to 160 mph in 32.92 seconds with the ZX-6R really starting to gap the R6 with a time of 22.68 seconds and almost 10 seconds faster.
The top speed for both motorcycle is very close with the ZX-6R hitting 164 mph and the R6 managing 161.3 mph.
Both bikes are awfully close to130 mph with the ZX starting to slowly move away from the R6 and then from150 mph the ZX-6R asserts itself and starts to gap the R6. but all in all, they are very close in terms of outright acceleration.
The main difference between the two would be the massively more flexible engine offered by the Kawasaki.
|Speed||Kawasaki ZX-6R Acceleration||Yamaha YZF-R6|
|SS/QM||[email protected] mph||10.89/133 mph|
|SS/KM||[email protected] mph||19.92/154 mph|
|SS/Mile||[email protected] mph||28.46/159 mph|
|Top Speed||164 mph||161.3 mph|