That,s very rare and awesome to find a 05 with original tires and chain. In 2010 I picked up a 06 cr125 from a 40 plus beginner, all original. How much better is the pc pipe, than the stocker? I have a pc pipe and silencer on my 04 stroker cr125, the 04 pipe fits on the 06, low end snap to the mid range is better than the 06 stocker, but the mid pull is a little shorter then goes flat. I have a 03 KX 125
HGS BUD racing pipe that I cut, bent, pounded in, to fit my 04. It works alot better on the 06 cr125, more resonsive, sharper hit then a stronger and longer mid range pull with 2,000 more rmps, with a rad valve, and icat also. It makes an honest 38 hp or more and is very quick ripping thew the power band. I had to cut some off the stinger on the silencer, make a clamp to mount the pipe, and use shorter pipe springs, it was alot of work,but worth it. The jetting is way rich stock, on the 05-07 cr125,s , you,ll need stiffer fork and shock springs also, there easy to change on the cr125,s. My 04 cr125 has a factory connection revalve, setup for 4 foot clay whoops, much stiffer valving than stock. The owner of F.C. his kid rides a cr125. Congrats on your new bike, looks awesome with HOT graphics too.
