Sp2 Exhaust on a Sp1? - Honda RC51 Forum : RC51 Motorcycle Forums
 
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post #1 of 4 (permalink) Old 05-17-2011, 12:06 AM Thread Starter
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Sp2 Exhaust on a Sp1?

I am looking to upgrade my 2001 stock exhaust and wanted to know if a exhaust for a Sp2 will work on my bike. Are the headers and mounts differnt on the on the sp1 and sp2?
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post #2 of 4 (permalink) Old 05-18-2011, 02:15 PM
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check out the search button,this has been covered a bunch of times. its pretty common question from SP1 owners. to use an SP2 system you need an SP2 header. the sp2 header has a d shape exhaust port while the SP1 has a circle. some guys worry abot this d shape messing with the circle port on sp1's but i dont think it has any noticeble effect. if you are worried about it or are as anal about it as me then use do what jondog did and cut both headers and have the sp1 cnnections onto the sp2 pipes.

https://www.rc51forums.com/forums/showthread.php?t=4386

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 #3 of 4 (permalink) Old 05-18-2011, 02:28 PM
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To illustrate the differences, here are some examples.

Exhaust header differences. SP1 left, SP2 right.


Exhaust system differences. SP1 left, SP2 right.


SP2 exhaust port showing "D" shape.
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post #4 of 4 (permalink) Old 05-21-2011, 12:34 AM Thread Starter
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Cool, thanks for the help.
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