Huh. So the expansion is going to alter whatever the path of least resistance is, so the theory is the newly dented metal is weaker than the surrounding tubing? But if you had a crack anywhere, then this method would surely blow that out right?
New header from FMF is $400 http://www.fmfracing.com/Products/Bi...005_KTM_525EXC
82 fj40, 99 uzj100, 06 gx470
97 DR650, 05 525EXC, 01 XT225, 89 TW200, 09 TTR125, 07 TTR90, 07 CRF50