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post #1 of 26 (permalink) Old 02-23-2011, 12:56 PM Thread Starter
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another exhaust question

I'm looking into upgrading my exhaust. I don't track it, so just street use. Mainly for a better sound. My stockers just don't do it justice. I want deeeeeep tone like the Yosh. I heard them on an 05 rc51 and my buddy's 02 954. Love it. Looking to keep my original mounting point, not hi-mount, and hopefully not much louder than the yosh. My favorite is the yosh rs3 w/polish finish.
The harris is cool too, but haven't heard of anyone running them.

Ok, all that said, I'm finding used systems hard to find. That's more my budget. And new is getting scarce too. At least what I'm looking for. sato, akra, yosh, harris. Finding fitment for sp1 is almost impossible. SP2 fitment has more options.

So my question: Is it as simple as switching my sp1 header for a sp2 header so I can use a sp2 exhaust? All suggestions appreciated.

John, 2000 RC51 #000100

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post #2 of 26 (permalink) Old 02-23-2011, 01:15 PM
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you can just switch to a sp2 header and buy whatever you like

i can have custom ovals made the same size as yosh and i also have sp2 low mount silver mids in stock i can cust you a smoking deal one a new set if you like?

used sp2 headers are around $150ish
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post #3 of 26 (permalink) Old 02-23-2011, 02:58 PM
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Originally Posted by jondog9 View Post
I'm looking into upgrading my exhaust. I don't track it, so just street use. Mainly for a better sound. My stockers just don't do it justice. I want deeeeeep tone like the Yosh. I heard them on an 05 rc51 and my buddy's 02 954. Love it. Looking to keep my original mounting point, not hi-mount, and hopefully not much louder than the yosh. My favorite is the yosh rs3 w/polish finish.
The harris is cool too, but haven't heard of anyone running them.

Ok, all that said, I'm finding used systems hard to find. That's more my budget. And new is getting scarce too. At least what I'm looking for. sato, akra, yosh, harris. Finding fitment for sp1 is almost impossible. SP2 fitment has more options.

So my question: Is it as simple as switching my sp1 header for a sp2 header so I can use a sp2 exhaust? All suggestions appreciated.
Hello, I hope you dont mind me jumping in on your discussion.
I to have been looking for a new/used end cans and link pipes and I agree there is more options if your have a SP2 than a SP1, but I thought the headers are different where they connect to the head ie the SP1s are round and the SP2s are square ish, I havent seen a SP2s headers so cant say yes or no.
But its very tempting to modify or change the original headers on my SP1 to suit the fitment of the SP2s range of cans.
As for Harris ( I assume you mean the Harris in England) I emailed them and they said they dont make them for the SP1 any more I was gutted. But Leo Vince still make sets for the SP1 as do Remus..... well last time I looked.
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post #4 of 26 (permalink) Old 02-23-2011, 03:12 PM
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i will have a set of Arrows, up for sale if interested. they sound great and are 9/10.

2001 Honda RC51 SP1
1996 Honda CBR 900RR
2003 Aprilia RSV Mille R
1999 Aprilia RS50
2012 Triumph Daytona 675R (Sold)
2010 BMW S1000RR (Sold)
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post #5 of 26 (permalink) Old 02-23-2011, 03:21 PM
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i will have a set of Arrows, up for sale if interested. they sound great and are 9/10.
Do you have any pictures, what sort of money are you looking at ?
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post #6 of 26 (permalink) Old 02-23-2011, 03:35 PM
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https://www.rc51forums.com/forums/showthread.php?t=2450

Thats my bike with the cans, no scratches or dents. mid pipes have the standard wear discoloring, but thats all.

Ill be home in a month if youd like some close ups (thats when id be able to send it, first week of april). I'd do 150 plus shipping for a forum member or a trade for some parts, if you have anything interesting.

2001 Honda RC51 SP1
1996 Honda CBR 900RR
2003 Aprilia RSV Mille R
1999 Aprilia RS50
2012 Triumph Daytona 675R (Sold)
2010 BMW S1000RR (Sold)
2005 Yamaha R6 (Sold)
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post #7 of 26 (permalink) Old 02-23-2011, 03:47 PM
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Originally Posted by gts455 View Post
https://www.rc51forums.com/forums/showthread.php?t=2450

Thats my bike with the cans, no scratches or dents. mid pipes have the standard wear discoloring, but thats all.

Ill be home in a month if youd like some close ups (thats when id be able to send it, first week of april). I'd do 150 plus shipping for a forum member or a trade for some parts, if you have anything interesting.
They look good! The only problem is that I live In England so postage maybe difficult.....but they do look good! How are the cans fitted to the link pipes, cant see any springs.
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post #8 of 26 (permalink) Old 02-23-2011, 04:24 PM
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Ha ya know what? i honestly cannot remember. its been 7 months since i've seen it. its been in my storage. let you know when i get back?

2001 Honda RC51 SP1
1996 Honda CBR 900RR
2003 Aprilia RSV Mille R
1999 Aprilia RS50
2012 Triumph Daytona 675R (Sold)
2010 BMW S1000RR (Sold)
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post #9 of 26 (permalink) Old 02-23-2011, 05:53 PM Thread Starter
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Originally Posted by Mrgrn View Post
you can just switch to a sp2 header and buy whatever you like

i can have custom ovals made the same size as yosh and i also have sp2 low mount silver mids in stock i can cust you a smoking deal one a new set if you like?

used sp2 headers are around $150ish
I was searching a little on FireBlades to find an answer and came across the post from our forum 'touchstone' Subsailor from august 2010:

"The Akrapovic full system comes with aluminum exhaust flanges with D-shaped inserts to match the D-shaped exhaust ports on the SP2.
The SP1 used round exhaust ports, so the inserts would not work."

"Tsukigi makes a full titanium system, but unfortunately, only for SP2."


So I'm confused now. I'm understanding the 00-01 will have round exhaust ports where the 02-up will have D-shaped exhaust ports. What am I missing here?

John, 2000 RC51 #000100

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post #10 of 26 (permalink) Old 02-23-2011, 06:44 PM Thread Starter
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And then this, from 11/08, also from FireBlades:
SP-1/SP-2 exhaust headers
--------------------------------------------------------------------------------

There has been a bit of discussion about differences and whether they will interchange, but having just tried it, I thought I'd mention what I found.

The SP-1 heads are a different part number to the SP-2 (although cams are the same).

SP-1 exhaust port outlet is round.

SP-1 header is round.

SP-2 header is OVAL(ish) and NOT round.

So the internal shape of the headers and exhaust port in the head is different and if you swap headers, either way, you will get a significant step which IMO MUST upset the gasflow and affect performance.

However, I don't actually know the shape of the SP-2 exhaust port in the head, but I suspect it is oval to complement the shape of the header.

So my conclusion is it is not really feasible to swap headers:-(

John, 2000 RC51 #000100

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