Is this a clamp on or weld on?

It could be. Normally I use a 5 inch ss band clamp.

I have a horrible drone sound around 2000 rpm and currently have a shorter 5" straight through muffler on my 3500. diesel truck. Looking to just tow.

The JY quieted my Ram 2500 Cummins diesel exhaust to a tolerable level. It is NOT a muffler, more like an expansion chamber or resonator. It does work to reduce sound, but not like a muffler.

Can this fit on a 2011 Freightliner Cascadia

I suppose you can fit it in their it would need some customizing i put a similar 5 incher on a freightshaker the one i used i got from summit racing and was originally for a diesel pickup but works great sounds awesome and is holding up well

Manufacturer	JY PERFORMANCE
Brand	JY PERFORMANCE
Model	DIESEL MUFFLER
Product Dimensions	78.74 x 20.32 x 20.32 cm; 4.54 kg
Item model number	DAC187
Exterior	Polished
Manufacturer Part Number	DAC187
Special Features	Straight Through Diesel Muffler
Item Weight	4.54 Kilograms

JY PERFORMANCE 4" Inch Inlet Diesel Muffler Exhaust - 7" x 24" Body - 30" OAL - Straight Through - Stainless Steel - Welded On Resonator, Polished - TIG Welding

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