I recently upgraded my TRX400EX suspension with these sporty replacement parts and they have made a world of difference! Based on my observations, these parts are very well made and have significantly improved the handling and stability of my ATV .Plus they were easy to install thanks to the clear instructions provided. The only con I can think of is that they are a bit pricey, but the quality and performance make them worth it. Overall, I highly recommend these suspension parts to any automotive enthusiast looking to upgrade their ride..