The 4-1 exhaust collector angles at 30° includes welded spring tabs, 2 swivel springs and 2 spring tabs to be welded to your stock header pipes.

The exhaust collector is the ideal solution if you want to replace the stock exhaust with a different aftermarket silencer on your 8 valve K100 model.

The stock silencer is big, heavy, ugly to some and could be nearly 30 years old now. The header pipes on the other hand are good quality stainless steel, they clean up and last well and are used in conjunction with this collector. The collector is made from 304 16gauge stainless steel that resists corrosion and extremely durable.