Proform Carburetor Main Body Holley 850 CFM 4122SMLRD Program an rpm limit that

Program an rpm limit that is ramped in during the launch

5 in Flange

All underdriven kits are thoroughly tested to ensure that the benefit comes without compromising the accessory performance

Features:Clip to a coil pack primary lead to produce a stable 12-volt square wave for a tach

Allows Completely Customize Your Main Harness Installation

Proform Carburetor Main Body Holley 850 CFM 4122SMLRD Program an rpm limit thatDirect replacement Components to turn a street carburetor into a high performance carb: get that extra perfomrance out of your ride in less than 30 minutes! Add up to 25 50 HP with PROFORM's 100% NEW, high performance carburetor main body (no re built components). Easy swap in, swap out installation utilizin existing metering blocks, fuel bowls, and base plate. Involves only 14 screws. Flows 850+ CFM. Has adjustable screw in air bleeds, high