2015 - 2020 Subaru WRX Pulley Kit
These OEM diameter pulleys will neither underdrive nor overdrive the associated accessories, yet lead to great throttle response and improved horsepower and torque numbers. Compatible with naturally aspirated, turbocharged, or supercharged engines.
NST Pulleys are apx 70% to 75% lighter than OEM
NST Pulleys For the WRX FA20 engine:
Crank Pulley 17 ounces | 495 grams
Water Pump Pulley 9 ounces | 257 grams
Superior to other options, NST Idler & Tensioner Pulleys include high quality serviceable bearings. NST Idler & Tensioner Pulleys are Hard Anodized, giving them a unique Graphite Gray color, making them the hardest and strongest possible option on the market. This is the only finish we can recommend for these Idler & Tensioner pulleys at this time.
Each kit is CNC machined from 6061-T6 aircraft quality aluminum, and tested for tight machining and balance tolerances. Every NST pulley is hard anodized for exceptional durability and is available in a choice of colors.
The NST kit is compatible the OEM belt, we recommend a new belt (available below) for our high mileage customers.