Science Friction Flywheels

Solid Billet Construction

SFI Quality At Affordable Prices

Wide Range Of Common and Not So Common Application

Weight Balanced To Your Crank Specs

Compatible With Popular Clutches

CNC Milled, Assembled and Balanced In The USA

Custom And One-Off Wheels Available On Request

American Powertrain’s Science Friction SFI quality billet flywheels fit just about every GM, Ford, Mopar and AMC V8 ever built. Billet steel or lightened billet steel works best on the street for smooth performance and drag racing where the flywheel stores energy for hard launches. Billet aluminum is preferred for quick rpm gain in road racing and for high revving engines.