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Discussion Starter · #1 · (Edited)
CBR1000RR piston...

A CBR1000RR cylinder is exactly the same bore (76mm) as the CBR250R.
I realize there are other variables we don't know, but the compression ratio on the big bike is 12.3 as opposed to 10.7 on the 250.
Just wondering if anyone has investigated the possibilities of using one of those pistons.
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