Description
Here, you are looking at the GFB Pulley Kit for the 08-14 Subaru WRX and 08+ STI. This kit consists of a lighter crank, alternator, and power steering pullies that save weight and rotational mass to improve the engine response.
DETAILS:
Lightweight aluminum construction
The crank pulley weighs .86 lbs
Power steering pulley weighs .37 lbs with 18% underdrive
Alternator pulley weighs .14 lbs with 16% underdrive
The 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 speeds
Includes new alternator/power steering belt
Black finish
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