12" x 2" Oval Plain Polished Aluminum Air Cleaner Kit - Red Filter heat-treated to the highest Rockwell

heat-treated to the highest Rockwell hardness available

so you are good to go

and work with stock components

These Speedmaster aluminum crankshaft pulleys help to increase horsepower by reducing accessory drag

For those with applications that require the fast and consistent action of and air shift this is exactly the shifter for you

12" x 2" Oval Plain Polished Aluminum Air Cleaner Kit - Red Filter heat-treated to the highest RockwellSpeedmaster's air cleaners not only look great, they also provide your engine with cleaner air for better performance. They're available in round and oval styles, and you can choose between plain polished, straight ball milled, and flame ball milled finishes.