ZETA Rear Suspension Lowering Link This component allows riders to adjust the height of the motorcycle seat by changing the length of the link rod, and offers a 3 cm lowering of the rear suspension. Fits models: CRF450R (model years 2021-2023) CRF450RX (model years 2021-2023) CRF250R (model years 2022-2023) CRF250RX (model years 2022-2023)