.
I bored out my 200s, and noticed very little difference performance wise, it just made it harder to pull over, i put on a DG exhaust front to back that i bought for 20 bucks, now that made a big differece
If it runs now and doesn;t smoke I dont think its worth the time, i redid my 200s just to sell it
1986 452x, 4inch westcoast swinger, full exhaust, and stage 5 racing kit
99 honda 300 4x4
06 Forman 500 4x4
07 Fourtrax 420 FI
Previous rides
81 250r, 83 Cr 250, 85 250 big red, 80 185, 84 200s, 83 KLT 200, 86 Alt 185, 01 WR 250, 83 250r, 84 250r, 1986 350x, 1985 350x, 87 350x, 91 big bear, 01 DS 650, 03 Kodiak 450.