Fast Toys Fast Toys 98/104mm Air-Box Lids

Powerful LS1 motors require higher airflow than the stock air lid and MAF can provide. Until now, you were stuck using a reduction coupler or fabricating an adapter to use with a 100 mm MAF sensor. This was costing you horsepower! The Fast Toys high flow lid features the exclusive "Power Bulge" design to increase the air lid volume substantially and provide a smooth air flow transition flow from the horizontal air filter to the 100 mm MAF sensor. This lid installs on the stock factory lower air filter base. A 100mm MAF is required (sold seperately). The Fast Toys 104 mm Air Lid is designed for highly modified LS1 motors. To work with the 100 mm MAF, the Fast Toys High Flow Air Lid features a giant 104 mm ID. This makes the ID of the lid about 6 mm larger than the 98 mm air lid and 15-16 mm bigger than other aftermarket lids. On top of that, it has significantly increased overall volume of the air lid compared to everyone else. Higher volumes support larger horsepower and torque improvements. The Fast Toys air lid has 14 % more volume than the most popular aftermarket lid and a whopping 27 % more volume than the stock lid (baffles removed)!

The Fast Toys 98 mm Air Lid is the highest flowing air lid on the market and the only one that works with a GM 85 mm MAF with no reduction coupler required!

The Fast Toys High Flow 104 mm Air Lid is the highest flowing air lid on the market and the only one that works with the TSP or Lingenfelter 100mm MAF.   

Both lids are available in "Black" or "Clear".