Hybrid Racing K-Series Idler Bracket, Pulley & Belt ComboStrength & Flexibility We tackle one of the most common K Swap issues with a new look and fresh idea. Our idler bracket and pulley kit was designed to take the guesswork out of a reliable belt tensioner system. Most aftermarket setups available today can do the job of getting you up and running, but none take the time to ensure that the serpentine belt system is within the proper tension window. A tight belt means excess wear on all components and a