Drew Shotgun Silencer Users!
#21
Registered
Drew Backlund Shotgun Mufflers
The holes are to let some exhaust go through then you adjust the springs for what rpm you want the flaps to open for racing.
If you don't or didn't have holes in the flaps, you had copies!!!
If you don't or didn't have holes in the flaps, you had copies!!!
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Padraig (08-23-2021)
#23
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#24
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#26
Charter Member # 55
Charter Member
For SB's post, he meant to type SOME and not dime.