Underdrive Pulleys

The gears inside alternators and the water pumps go ‘round and ‘round, siphoning off raw engine power with every rotation. Underdrive pulleys put an end to this wasteful horsepower spending, putting lost energy back into your pedal. What’s more, underdrive pulleys give your motor a tough new look.

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BBK Underdrive Pulley Sets

Customer Rating

Drop the drain on your engine with BBK Underdrive Pulley Sets. They reduce the speed of your water pump, alternator and crankshaft to unlock hidden horsepower. Custom CNC-machined from aluminum or steel for a direct bolt-on install. 1-year warranty. Read More

Priced from $89.99