Straight Reducer Silicone Hose Coupler - 3.50" to 4.00" ID - Black - SI-SR-89102-BLK Volkswagen Golf GTI Lobe - Primary Lift -

Lobe - Primary Lift -

After countless hours of design

making them an economical option for custom fabricators as each pipe will offer up to three separate bends and a straight section

we saw 14hp peak gain and 9hp average gain against the stock air box

May be compatible with other engine swaps

Straight Reducer Silicone Hose Coupler - 3.50" to 4.00" ID - Black - SI-SR-89102-BLK Volkswagen Golf GTI Lobe - Primary Lift -Reinforced Silicone Hose Couplers feature High Temperature Resistant Reinforcement Fabric between each layer of silicone which allows for an impressive Operating Temperature Range of 40 F to 392 F. Not suitable for use with Oil Fuel. Features: Genuine 4 ply Silicone Heat tolerance: 40 to 392 Fahrenheit Burst Pressure: 200 PSI Working Pressure: 50 PSI Wall Size: 4 mm 5 mm Compatible with antifreeze coolant