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Steeda underdrive pulleys help you achieve more horsepower and torque—along with better gas mileage! These serpentine-style units reduce the parasitic accessory drag on your engine, slowing the speed on parts like the alternator, water pump, and crankshaft by about 25 percent. The well-built pulleys are manufactured from one-piece nodular iron, with special injection-molded rubber to limit vibrations and perform in high temperature areas. Most of Steeda's underdrive pulleys are designed for fitment in various Ford Mustang models. Order the kit tailored for your specific car, then enjoy the newfound power and fuel efficiency you've been losing with older stock components.
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$294.95
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$364.95
$261.99
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$328.99
On Sale
COBB Tuning lightweight crank pulleys are CAD-designed and CNC-machined from billet 6061-T6. They're anodized to withstanding the toughest of under-engine conditions. These lightweight units can improve acceleration by reducing the rotational mass of the stock unit by as much as 4 lbs. The pulleys specifically maintain the stock diameter, so as to not under-drive and cause electrical woes for you; they also maintain the stock drive belt surface for a quick and easy install, by even the most novice of owners. Replace your factory main pulley with the performance of a COBB Tuning lightweight crank pulley. Order the model designed for your vehicle application.
Not Yet Reviewed
$165.00
$148.50
On Sale
APR 3.0 TFSI supercharger drive and crank pulley upgrade kits have been designed to dramatically increase the rotational speed of the factory supercharger. When combined with APR's Ultra-Charger Throttle Body Upgrade in a dual pulley setup, the system is alleviated of power robbing inlet restrictions, allowing the engine to achieve exciting new levels of performance! The supercharger drive pulley decreases the diameter of the factory pulley from 63.25mm to 57.75mm, which in turn spins the supercharger 9.5 percent faster. This results in a healthy bump in horsepower and torque across the entire rpm range with the supercharger operating at a higher rate of speed. The pulley is CNC-machined from billet stainless steel, E-coated factory black for an OEM appearance and is press fitted to the factory supercharger unit. The supercharger crank pulley increases the diameter of the factory pulley from 162mm to 187mm, which in turn spins the supercharger 15.4 percent faster. This results in a larger bump in horsepower and torque across the entire rpm range, as the supercharger is spinning at an even higher rate of speed. The pulley is CNC-machined from light weight billet aluminum with weight saving pockets throughout and has an anodized black finish and includes new crank pulley bolts. It retains the factory harmonically balanced crank pulley and bolts on top of the existing unit. Upgrading both the supercharger drive and crank pulleys results in the factory supercharger spinning faster than stock, which results in an even higher horsepower and torque gain across the entire rpm range. However, at the airflow levels achieved with a dual pulley setup, maximum power is severely restricted by the factory throttle body unit. APR's Ultra-Charger Throttle Body Upgrade is necessary to take full advantage of the dual pulley configuration and is available in platform specific variations for the B8/B8.5 A4/A4/S4/S5, Q5/SQ5 and C7 A6/A7.
Not Yet Reviewed
$599.95
$538.95
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