Allstar Performance Holley 4500 Open Carb Spacer - 1" Thick 41012510 Ribbon Window Net is used

Ribbon Window Net is used and approved in all sanctioning bodies

Zippered Closure

and unique backpack-style padded straps along with padded back support for a comfortable hands-free way to haul safety equipment

but still only increases at a rate of 150 lb

Allstar Performance Holley 4500 Open Carb Spacer - 1" Thick 41012510 Ribbon Window Net is usedSpecially designed for drag race applications to isolate carburetor from manifold, spacers prevent horsepower robbing heat transfer and increase the distance from the bottom of the carburetor to the manifold plenum for better air flow. Spacers are CNC machined in the U. S. from a polymer compound able to withstand temperatures up to 400F. Available in open or four hole versions for 4150 and 4500 series Holley and Holley style carburetors in 1 2", 1",