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Author Message   Shunter95 Posted on Tuesday, March 27, 2018 - 03:14 pm:        I had been chasing low compression for a long time and finally took the motor apart to find that the pistons appear to be too small for the cylinders. As far as I can find the pistons and cylinders I have don't match the stock part numbers for the bike. I was curious if anyone knows the factory part numbers for an '03 XB9s for pistons and cylinders as well as stock bore specs? part numbers I have are: pistons: 22320-20, STD, 5330ND30/5330NE01 Cylinders: 16955-02, B41 unsure of bore size, didn't have my "precision" tools with me when I took it apart. I can only assume "STD" means that the pistons are stock size, meaning the bore must be oversized. thanks guys! new to the forum, can't wait to swap ideas and learn a lot   Screamer Posted on Sunday, April 01, 2018 - 12:18 am:        Shunter, PM sent. Thanks - R   Shunter95 Posted on Sunday, April 01, 2018 - 08:13 pm:        edit to original post - pistons end in "02" not "20"   Screamer Posted on Tuesday, April 03, 2018 - 10:31 pm:        Shunter, sent another PM. R

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