Donny walkers chainsaws showing different muffler mods
10:40
Husqvarna 572xp Muffler Tests!! Getting the Easy power??
24:57
Chainsaw Muffler shoot out, Bolt on performance
23:20
Testing a Bearclaw exhaust pipe on a dolmar 7300
25:43
Husqvarna 572Xp Muffler Mod
12:40
Chainsaw Exhaust Muffler Mod - Husqvarna 372xp
26:36
Motosserras Como eu Faço Revisão
27:02
two mods you can do to increase power without porting! this really works!
11:08