The Chain and Sprocket Kit is a direct-fit replacement for TRX90 and TRX90EX models from 1993–2008, and TRX90X models from 2009–2015. This complete drivetrain kit restores your ATV to stock performance levels by featuring 13/50 tooth gearing and a 428-98 link chain. The sprockets and chain are built from tough, wear-resistant steel, ready to handle trail rides, youth racing, and recreational use. The components are precision-matched to ensure smooth power transfer, consistent acceleration, and excellent durability. Whether replacing a worn-out drivetrain or doing a full maintenance overhaul, this kit is easy to install and built to last. It's perfect for families, youth riders, and mechanics looking for reliable parts with no guesswork.