For '84-'99 Evolution Big Twin or '70-'99 custom chasis with alternator-style primary
Specially machined cylinder heads allow use of stock length manifold, use your existing carb (re-jetting is required)
Designed to bolt into stock or aftermarket EFI, carburetor or air cleaner
Crank and case machined for crank position sensor
Includes S&S cylinder heads, S&S valve springs, forged rocker arms, 640 cam, three piece flywheel assembly, 1.671" diameter crankpin, 0.927" wristpins, high-volume high pressure oil pump, electric compression releases and forged pistons
Made in the USA
Notes
Will require a performance ignition and performance carburetor.