PRO CIRCUIT Linkage System KAWASAKIKX250 21-24KX450 19-23Better Handling and Performance for the new KX Four-Stroke ModelsPro Circuit is excited to release a new linkage system for the 2021 KX250 and2019-2021 KX450 that brings the bike's handling performance to an entirely new level. The stock OEM linkage system for these newer models tends to be harsh and stiff at the beginning of the stroke and gets softer as the rear wheel goes deeper into the stroke. With our new linkage system, it's the complete opposite. The Pro Circuit KX250/KX450 linkage system is plusher at the beginning and stiffens up as the rear wheel goes deeper into the stroke. This adjustment lessens the need for stiffer high-speed valving, which can cause the rear to feel harsh and deflective. A considerable amount of research and testing for this new linkage system has resulted in a more true-to-weight spring rate to reach the ultimate sweet spot in handling for your new KX250/KX450. Ultimately, the new linkage creates a plush feel while increasing traction.Note: An increase in spring rate is required. Usually a 0.2 kg/mm rate increase is recommended.(Rate example: 5.4 goes to 5.6).RACER-X Comment:We've gone out with Pro Circuit to test the new linkage and found the update made a massive improvement in handling. The linkage allowed us to run a more true-to-weight spring rate and gave the shock a more planted feel as well as significantly improved traction in acceleration chop and sharp, square edge bumps. This change will work on the KAWASAKI KX250 21 and KX450 19-21 models and is well worth the money.PRO CIRCUIT Partnumber: KLS20450Linksysteem
