Yeah OD11, HGS makes awesome pipes. I had one on a 01rm125 it had lowend with a super wide mid range with more overrev, quite a bit better than a pc pipe. The pc pipe makes the bike quicker, but the power band is shorter and weaker than a HGS pipe. I bought my 06 cr125 last summer from a vet beginner, 10 easy hours on it, original tires,piston,etc. All stock it,s quicker and quite a bit faster than a stock 04 cr125. I thought the 06 cr125 had reed flutter, so I pickedup a rad valve, since the vforce on my 04 didn,t make a big difference. I took the reeds out and polished the inside smooth on the rad valve,put a icat on since it worked great on my 04, and a pc silencer regular length. It comes off corners a gear higher, lifting the front tire on the exit of corners, big difference low to mid, upper mid to top over rev slight improvement. The bike runs better overall. I changed the fork springs, since it was apart I polished the center damping rod and put a stiffer shock spring on too. I weigh 170-175 in my b.suit, so I needed stiffer springs, the suspension works great very plush, I,m adding oil to the forks to deal with bottoming on big jumps.
