PRO CIRCUIT Linkage Arm - 137.5 mm KX450F 2016 KPA16450 Universal Plate Backgrounds this will not inter connect

this will not inter connect with other systems or "cat back" style setups)  (Note 2020 + R1 riders can call in the orders to have front 02 sensors added for an extra charge if your tuning cannot remove the 02 sensors)

the X-Factor features an oversized

330mm Length Silencer Design (Carbon Fiber) designed to match the Z H2's Race Inspired lines

2021-2023 Gas Gas MC 85 17/14 - - 2018-2023 KTM 85 SX BW 19/16 - - 2018-2021 KTM 85 SX - - 2018-2019

See images below for bike listings in 100mm and 108mm - This product is only for 100mm fitment bikes)

PRO CIRCUIT Linkage Arm - 137.5 mm KX450F 2016 KPA16450 Universal Plate Backgrounds this will not inter connectPro Circuit's Linkage Arms are CNC machined from billet aluminum and are designed to stiffen up the initial linkage curve and improve the geometry of the chassis, making the bike much more stable. This will also help eliminate the initial loose and wallowy feel. Turning and cornering capabilities are greatly improved as well. Although having your suspension revalved by Pro Circuit would make a considerable improvement, the Linkage Arms alone provide a