i bought it used off ebay and the flange that bolts to the motor was welded on. being new to 2 strokes, i didn't see an issue with it and it made my bike wake up from the dead so i didn't care. but after about 2 years running it, the weld finally broke, thats when i found out from guru's that the pipe cannot be hard mounted it needs to move. with that being said it needs a piece welded on that will slip over the exhaust flange and i new mount that goes to the frame as it never had one. i have a stock pipe to cut up for parts but i found a deal on a LRD so i never had it done.