Overview

Like all GFB lightweight pulleys, these begin life as a single 6061-T6 aluminium alloy billet, which is then precision CNC machined to exacting tolerances. We then anodize them black for a stealthy appearance and superior wear resistance. This kit consists of a lighter crank, alternator, and power steering pullies that save weight and rotational mass to improve the engine response

Features

• Lightweight aluminum construction
• Crank pulley weighs .86 lbs
• Power steering pulley weighs .37 lbs with 18% underdrive
• Alternator pulley weighs .14 lbs with 16% underdrive
• Total mass of GFB pulley kit is 1.38 lbs
• Mass savings for STI models: 5.31 lbs
• Mass savings for WRX models: 4.43 lbs
• AC compressor will still operate at normal speed
• Black finish