The SR Suntour FUN043-22 29 lockout cartridge is a spare part designed for SR Suntour mountain bike forks. This silver cartridge is designed to improve the performance of your fork by enabling you to easily lock out the suspension when riding on smooth or flat terrain. This feature helps to increase efficiency and control, particularly when climbing or riding on pavement.This high-quality cartridge is compatible with 29 forks and is easy to install, making it a convenient and cost-effective upgrade for your bike. Whether you are replacing a worn-out cartridge or looking to improve the performance of your suspension, the SR Suntour FUN043-22 29 lockout cartridge is a reliable and durable option.