AutoMeter American Muscle Tachometer - 3-3/8" 1530A14 Redesigned cheek pads are more

Redesigned cheek pads are more contoured and comfortable than previous ST4 helmets

7 in Top Diameter

Exceeds both SFI 3

Universal fit bumper extends out 21" from frame mounting brackets that are on 39" center

1/4" NPT adapter

AutoMeter American Muscle Tachometer - 3-3/8" 1530A14 Redesigned cheek pads are moreSince 1957, AutoMeter has set the standard in performance, accuracy and durability with their legendary Tachometers. The absolute pinnacle of engineering and technology, it's no wonder AutoMeter can lay claim to more motorsports victories than every other gauge manufacturer combined. The patented air core meter movement, wound in house to exacting standards, can move the needle from 0 10,000 rpm in 333 milliseconds. An inaugural inductee to the Hot