Product Overview
Exile stihl ms660 dual port muffler
BOLT-ON POWER - DYNO TESTED
SAW ENGINE RUNS COOLER
FITS: MS 660 / 066, Holzfforma G660
100% Stainless Steel
Polished Finish
TIG Welded
Removable Spark Arrestor Screen
Will need 2x m5 x 12 screws to replace the top smaller screws on the muffler cover.
This is just the faceplate not the whole Muffler
ALL PERFORMANCE SAW PARTS BACKED BY OUR LIFETIME GUARANTEE!
Installation: Stihl M-tronic saws will calibrate automatically, but a factory reset is recommended.
Non M-tronic saws MUST be tuned once installed.
Tuning with a digital tachometer, check RPM with stock muffler cover still on saw, swap stock cover install ported cover, check RPM with ported cover, set RPM back to stock original RPM
