ok crank pin is 22mm/rod centres are 110mm/piston pin 18mm/big end width 17mm/small end width 23.8 mm but can be more.the rod i found to suit before was from a odd ball make ive never heard of maybe out of a european country.what i want to do is stuff a pe/rm250B piston into my ts185A using the stock 22mm crank pin size,i know it can be done but the fellow who did it didnt want to tell me.Pokey theres plenty of 185 rod kits around and dt200 kits are the same size as well but theres no oil gallery if you want to use the oil pump which also feeds the big end like a 4t does.