Kartboy Aluminum Crank Pulley - BRZ 2013-2017 / FR-S 2013-2016
The Kartboy Crank Pulley is a great way to increase performance without any sacrifice. Decreasing rotational mass reduces the strain on the engine. The lightweight crank pulley has the same effect as a lightweight flywheel, just not as dramatic.
Kartboy Crankshaft Pulley weighs in at 1.04 Pounds. A good bit lighter than stock but not light enough to throw a CE light. Free up a little crank HP and get some KB Bling.
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