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post #1 of 4 (permalink) Old 05-14-2019, 08:47 AM Thread Starter
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Hi guys. As you already probably know there aren't many people racing cbr600rr any more as the r6 and zx6 seem to be everywhere mainly cause the cbr is under powered. Well if your looking for a few extra horses I'd highly recommend the velocity stacks upgrade. I fitted hrc stacks and increased the hp at the wheel by 4. 110hp at the wheel is pretty good for a 600.
Here's the dyno is used before and after so you can see the increase 👌
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post #2 of 4 (permalink) Old 05-14-2019, 01:22 PM
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Thank you Steve, I've not seen any before afters of Vstacks.

4 hp is surprising amount of gain from some plastic funnels......I see why they're costly.
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post #3 of 4 (permalink) Old 05-25-2019, 07:40 AM Thread Starter
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I'm at a race wknd now mate and all I can say is wow!! The bike pulls so much better in the higher rev range and I'm having no problem matching the r6's on the straights. Only 1 zx6 here today and he's smoking everyone but even on a 300 this guy would be quicker lol
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post #4 of 4 (permalink) Old 05-25-2019, 07:42 AM Thread Starter
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Forgot to mention their aluminum stacks, Genuine HRC ones so probably a lot of r&d went into getting them spot on 👍
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