QSC VW Type 1 4x Exhaust Valves and 4x intake Valves 38mm x 49mm golf •Reduced MOI (Moment of inertia)

•Reduced MOI (Moment of inertia) to provide enhanced torque and acceleration

•Compatible with 91110220111

It is also made of stainless steel to improve durability

but it will also work on 1975-1983 911 by replacing the necessary hardware (e

The structure of pistons is designed to enhance the heat-resistance and durability

QSC VW Type 1 4x Exhaust Valves and 4x intake Valves 38mm x 49mm golf •Reduced MOI (Moment of inertia)QSC VW Type 1 exhaust valves and intake valves are brand new. This set consists of 4x exhaust and 4x intake vales. The size is 38mm x 49mm.** Application Volkswagen VW Type 1 **Professional installation is recommended **A break in period of 500 miles is required after the installation