Moroso Exhaust Port Blockoff - 1-Piece - GM LS-Series (Pair) SPBS1 Use coil shim spacers ALL56120

Use coil shim spacers ALL56120 and ALL56121 to make chassis adjustments

Keeps rotating assembly free of unwanted oil to reduce horsepower robbing windage

yet soft material outside and optical cloth quality interior

and the system will tune itself as you drive

Moroso Exhaust Port Blockoff - 1-Piece - GM LS-Series (Pair) SPBS1 Use coil shim spacers ALL56120Product Description: Exhaust Port Blockoff 1 Piece Aluminum Natural GM LS Series Pair Moroso Performance Products is one of the worlds most respected suppliers of automotive equipment for racing and street performance applications. Moroso manufactures over 4000 products, from oil pans and oiling systems, to ignition wire, ignition components, valve covers, fuel system equipment, air cleaners, hard core racing tools, chassis and suspension equipment