Help. Can't find much real-world information regarding Kaisei 4130R tubing.
According to Kaisei's 2005 catalogue as well as this one http://www.bikeschool.com/PDF_Files/KAISEIPoster.pdf, it's directly comparable to Kaisei 8630R.
Does anyone have real world experience with the differences between the two tubesets and any others? Which is lighter/stiffer?
If you've ridden 4130R, let me know.