If you buy the sst pipe, you would be better buying also the sst silencer because they have been tested and developed to work together. For the 02cr125 I would keep the stock pipe and buy the fmf powercore2 shorty silencer instead.
Originally posted by marcusgunby ...the CR engine which you know isnt strong std is very hard to improve with a pipe-you can move power around but to get an overall increase is very hard on the CR.