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You Americans and your Velocity Stacks...

be honest, do they make any difference?

Well I'm running stock stacks along with a stock exhaust & a stock motor, but when I held the HRC stacks in my hands my penis got bigger.
 

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smokin a Jeffery
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Buy the velocity stacks from an 06/07 1000RR, they are improved from the 04.
yup, i have them in my 04. :thumbsup:

Yup, especially if your goal is to drop hp in the mid-range. Works like a charm everytime.
are you sure you dont want to recant your statement? if they rob power, than why are there about 10 riders on this site with 04/05 bikes running 06/07 stacks in them?
 

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yup, i have them in my 04. :thumbsup:



are you sure you dont want to recant your statement? if they rob power, than why are there about 10 riders on this site with 04/05 bikes running 06/07 stacks in them?
Ken Hill did this back in 06, with I believe DK, and adding the 06 stacks lost 6hp in the mid-range but gave a couple up top. Diel has also said over and over that with a stock motor year matched OEM stacks are best and swapping out for different years is worthless. Resus swapped back to year matched OEM stacks realized what he was missing. If there wasn't such controversy on weather swapping stacks works, I think more people would use them.
 

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Not only that, but if you install the 04-05 V-stacks (in an 04-05 bike) incorrectly it also changes the fueling of the bike altering the mid-range & topend gains.
 

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Premium Member
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do not install 06/07 v stacks in your 04/05. it has been proven that you dont gain hp.

mark at factory pro said he tried every combination from sunday and nothing worked better than the stockers. the ONLY reason you need v-stacks is with a full built motor.
 

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I got 3 hp on the dyno. Search this forum for Velocity stack mod and you will find a step by step process of buying two sets of 06/07 OEM stacks and making your own equivalent to the HRC stacks for $32!!! $32 = 3 hp = F ing good upgrade.

Here is the short version of the post.
1) Take both sets of 06/07 OEM stacks. Cut them in half at the middle bolt hole.
2) Piece together 4 short stacks and toss the tall ones all together.
3) Install and enjoy the QUICKER throttle response and 3 hp on the TOP end.

This mod will NOT effect the mid and low end HP, like many of the aftermarket stacks. Usually you see a DROP in the low and mid range HP with an increase in the top end.

This mod doesn't drop your low and mid HP but it will increase top end 2-3 hp

It was the BEST $32 I've spent on my bike.
 

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I got 3 hp on the dyno. Search this forum for Velocity stack mod and you will find a step by step process of buying two sets of 06/07 OEM stacks and making your own equivalent to the HRC stacks for $32!!! $32 = 3 hp = F ing good upgrade.

Here is the short version of the post.
1) Take both sets of 06/07 OEM stacks. Cut them in half at the middle bolt hole.
2) Piece together 4 short stacks and toss the tall ones all together.
3) Install and enjoy the QUICKER throttle response and 3 hp on the TOP end.

This mod will NOT effect the mid and low end HP, like many of the aftermarket stacks. Usually you see a DROP in the low and mid range HP with an increase in the top end.

This mod doesn't drop your low and mid HP but it will increase top end 2-3 hp

It was the BEST $32 I've spent on my bike.
Do you have before and after dyno graphs you can share?

BTW, you claim $16 in your other post.
 

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Kamikaze
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14,397 Posts
if they rob power, than why are there about 10 riders on this site with 04/05 bikes running 06/07 stacks in them?
I bought mine because they were like $20 shipped and I was bored that particular weekend and wanted to change something just to change something. I honestly can't tell any difference other than it maybe being slightly louder due to the increased echo effect of the longer middle tubes - but thats probably only in my head too.
 

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I have an 06/07 bike so I only needed to buy one set of the stacks for $16. People with an 04/05 will need two sets for $32.

As far as the Dyno chart, I can upload the final run, but my tuner and I put on and took off mods for 2 days straight to gain the best results. Posting the every dyno run for you all wasn't my #1 priority, so we didn't save each dyno test for every mod seperately. But when we replaced the velocity stacks alone, we got 3 hp on my bike at the on the top end alone, nothing changed anywhere else. I will post the final run when I get home today. Spend the whole $16 or $32 (04/05 models) and 30 minutes of time to find out for yourself...

Other notable gains from the weekend:

Flapper mod (gutted and fiber glassed to look like HRC intake) over just pulling the flap off, short OEM velocity stacks over OEM and HRC, BMC race over K&N, and Rapid Bike 3 instead of PCIII
 

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I have an 06/07 bike so I only needed to buy one set of the stacks for $16. People with an 04/05 will need two sets for $32.

As far as the Dyno chart, I can upload the final run, but my tuner and I put on and took off mods for 2 days straight to gain the best results. Posting the every dyno run for you all wasn't my #1 priority, so we didn't save each dyno test for every mod seperately. But when we replaced the velocity stacks alone, we got 3 hp on my bike at the on the top end alone, nothing changed anywhere else. I will post the final run when I get home today. Spend the whole $16 or $32 (04/05 models) and 30 minutes of time to find out for yourself...

Other notable gains from the weekend:

Flapper mod (gutted and fiber glassed to look like HRC intake) over just pulling the flap off, short OEM velocity stacks over OEM and HRC, BMC race over K&N, and Rapid Bike 3 instead of PCIII
Who is your "Tuner"? You realize that the head on the 04-05 is different than the 06-07s right? The gain you are seeing on your 06/07 might not be realized on 04-05s with just VS swaps. I would spend the money and try myself, but personally can take the word of Ken Hill, DK, Diell, and Brad and believe that there isn't any in it.
 
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