Pulleys - Crank, Underdrive

ATI Pulley - Supercharger - 9.80 - 8 Grv - AL - Front - 2014+ LT4 - Dry Sump - 20 Percent OD

HKS CRANK DAMPER PULLEY SR20 RWD

Replacement Belt for Underdrive Pulley Kit (D560-0003 & D560-0004). This is one of 2 belts used by the Underdrive Pulley Kit. This belt attaches to the alternator and water pump.

Replacement Belt for Underdrive Pulley Kit (D560-0001). This belt attaches to the alternator and water pump.

Replacement Belt for Underdrive Pulley Kit (D560-0001). This belt attaches to the power steering and air conditioner.

Replacement Belt for Underdrive Pulley Kit (R560-0002). This belt attaches to the power steering and air conditioner.

Replacement Belt for Underdrive Pulley Kit (D560-0003). This is one of 2 belts used by the Underdrive Pulley Kit. This belt attaches to the power steering and AC.

Replacement Belt for Underdrive Pulley Kit (D560-0004). This is one of 2 belts used by the Underdrive Pulley Kit. This belt attaches to the power steering and air conditioning.

Dinan's underdrive pulley is designed to increase power (11 horsepower 8400 RPM and 7 lb-ft torque 8400 RPM on a stock car) by reducing parasitic drag on the engine from spinning the alternator,...

Dinan's lightweight billet aluminum crankshaft pulley underdrives each of the accessories by 13 percent, reducing parasitic drag on the engine for a 6 HP @ 8000 RPM and 4 lb-ft torque @ 8000 RPM gain...

Extension harness for use with factory exhaust valves.

Fits Audi A6 Quattro 09-18, A7 Quattro 12-18, A8 Quattro 13-18, Q5 13-17, Q7 11-15, S4 10-16, S5 10-17, SQ5 14-17

Fits Audi A6 Quattro 09-18, A7 Quattro 12-18, A8 Quattro 13-18, Q5 13-17, Q7 11-15, S4 10-16, S5 10-17, SQ5 14-17

Fits Audi A6 Quattro 09-18, A7 Quattro 12-18, A8 Quattro 13-18, Q5 13-17, Q7 11-15, S4 10-16, S5 10-17, SQ5 14-17

APR's Supercharger Drive Pulley Upgrade decreases the diameter of the factory pulley from ~63.25mm to 57.75mm, which in turn spins the supercharger ~9.5% faster. This results in a healthy bump in...