Crank pulleys, attached to the outside of the crankshaft, are the source of power for a car’s accessories. The alternator, power steering, water pump, and air conditioner are all belt driven units, attached to the crank pulley, that use horsepower from an engine to provide their own services. 86motoring lightweight aluminum pulley systems increase an engine’s response by reducing the power required to drive the engine accessories.
Normally, 86motoring lightweight pulleys will increase engine output by 8 to 10 horsepower, with even better power levels yielded from turbo/supercharged models than seen in naturally aspirated engines. This increase results in quarter-mile time improvements of .20 to .25 seconds, easily making this modification one of the best “bang for your buck” modifications for the Scion FR-S and Subaru BRZ.
86motoring pulleys for the FR-S/BRZ are constructed of aircraft quality aluminum, making them extremely durable while at the same time much lighter than their steel OEM counterparts. This weight reduction (apx 75%) results in less rotating mass on the engine’s crankshaft which drastically increases the engine’s ability to rev up to speed faster. Better throttle response, better horsepower and torque delivery, and better fuel economy can all be had when using 86motoring pulleys.
SCION FA20 CRANK PULLEY: 78oz
86motoroing FA20 Crank Pulley: 14oz
SCION FA20 WATER PUMP PULLEY: 16oz
86motoring FA20 Water Pump Pulley: 8oz
SCION FA20 ALTERNATOR PULLEY: 8oz
86motoring FA20 Alternator Pulley: 3oz
Item Number 86M20100: 3pc Pulley Kit: Crank, Water Pump, Alternator.
Available Colors: Black. Blue. Gold. Purple. Red.