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708031 APD Black Widow Spacer THROTTLE STOP – 4500 Series, 1.750" TALL 2.250" BORE
708031 THROTTLE STOP SPACER APD Description 4500
Black Widow " Spacer (4500 Series)
CNC Machined from 6061-T6 aluminum
Finished in black hard coat anodizing
Machined center to evenly distribute air & fuel
Increases air speed, signal, and overall mid/high end performance
Dyno tested HP increase of 10+ HP