JET Performance Products is proud to release their new Underdrive Pulley/Harmonic Balancer set for 2014-2015 GM trucks and SUVs with the 5.3L engine. This great pulley set helps to add up to 12 horsepower by reducing drag and helping the engine turn with less effort.

Official Release:

JET Performance Products has released a new underdrive pulleys/harmonic balancers for GM applications. The pulley with built in harmonic balancer will add 10-12 horsepower at the drive wheels. The underdrive pulley reduces the drag placed on the engine and allows it to turn with less effort. The JET Underdrive Pulley Set reclaims lost horsepower and mileage by reducing the drag placed on the engine to drive the accessories such as the air conditioning, power steering and water pump. The JET Pulleys slow down these accessories to allow the engine to turn with less effort without any adverse effect on the operation of A/C, power steering, charging or cooling systems. Installation consists of simple bolt-on replacement of the stock pulleys. Kits include pulleys, hardware, complete instructions and part number for new serpentine belt (most kits will require use of smaller size belt).

*Belt is not included with kit.
*Number and type of pulleys will vary per application.

Features:

• Built in harmonic balancer
• Reduces drag placed on engine
• Allows engine to turn with less effort
• Adds 10-12 horsepower at the drive wheels