By replacing your stock shock linkage with a DeVol Transformer Pull-Rod, you have the option of adjusting up to 5 settings for adaption to various terrain and to attain the feel YOU want! All DeVol Transformer Pull- Rods stiffen the initial rising rate of a shock and lowers the rear end gradually with each longer setting. Not only are there multiple settings in the Transformer Pull-Rod alone, but it opens up opportunity for endless customized suspension setup options to give you a serious edge on the competition.Features: Performance enhancement linkage Best for MX & Offroad Up to 5 adjustment settings May lower rear end up to 1/4* -1/2* on various models Lightweight Stronger than stock Stiffens initial rising rate resulting in slightly softer rear suspension Allows rear-end to track straighter Improves front end stability Anodized factory look All models include bearings/seals Available for most models Made from aerospace grade billet aluminum 100% Made in the U.S.A. Fitment Yamaha WR250F 2015 Yamaha WR250F 2016 Yamaha WR250F 2017 Yamaha WR250F 2018 Yamaha WR250F 2019 Yamaha WR250F 2020 Yamaha WR250F 2021 Yamaha WR450F 2016 Yamaha WR450F 2017 Yamaha WR450F 2018 Yamaha WR450F 2019 Yamaha WR450F 2020 Yamaha WR450F 2021 Yamaha YZ250F 2009 Yamaha YZ250F 2014 Yamaha YZ250F 2015 Yamaha YZ250F 2016 Yamaha YZ250F 2017 Yamaha YZ250F 2018 Yamaha YZ250F 2019 Yamaha YZ250F 2020 Yamaha YZ250F 2021 Yamaha YZ250F 2022 Yamaha YZ250FX 2015 Yamaha YZ250FX 2016 Yamaha YZ250FX 2017 Yamaha YZ250FX 2018 Yamaha YZ250FX 2019 Yamaha YZ250FX 2020 Yamaha YZ250FX 2021 Yamaha YZ250FX 2022 Yamaha YZ450F 2009 Yamaha YZ450F 2010 Yamaha YZ450F 2011 Yamaha YZ450F 2012 Yamaha YZ450F 2013 Yamaha YZ450F 2014 Yamaha YZ450F 2015 Yamaha YZ450F 2016 Yamaha YZ450F 2017 Yamaha YZ450F 2018 Yamaha YZ450F 2019 Yamaha YZ450F 2020 Yamaha YZ450F 2021 Yamaha YZ450F 2022 Yamaha YZ450FX 2016 Yamaha YZ450FX 2017 Yamaha YZ450FX 2018 Yamaha YZ450FX 2019 Yamaha YZ450FX 2020 Yamaha YZ450FX 2021 Yamaha YZ450FX 2022