Doug's Glass Pack Muffler Side Pipe Inserts SPBXL3 Spindle accepts the larger 11-7/8"

Spindle accepts the larger 11-7/8" x

40 Micron Element

58cc combustion chambers

carbureted

Doug's Glass Pack Muffler Side Pipe Inserts SPBXL3 Spindle accepts the larger 11-7/8"Product Description: Muffler Glasspack Style 4 in Side Tube Slip In Steel Natural Pair Dougs Headers, the most respected name in the header industry since the 60s, began in 1958 as a small muffler shop in East Los Angeles, California. Every Dougs header comes with all the necessary mounting hardware, collector reducers or connector pipes, premium gaskets and detailed installation instruction sheets. Our extra thick gaskets are rated up to 1100F,