Install step of xmax backrest

[@elvirawu9495]

www.aliexpress.com/item/32964513746.html?spm=a2g0o.detail.0.0.e6935337VPDGmN&gps-id=pcDetailBottomMoreThisSeller&scm=1007.13339.291025.0&scm_id=1007.13339.291025.0&scm-url=1007.13339.291025.0&pvid=9423837f-c976-4988-b0aa-6dec45453077&_t=gps-id:pcDetailBottomMoreThisSeller,scm-url:1007.13339.291025.0,pvid:9423837f-c976-4988-b0aa-6dec45453077,tpp_buckets:668%232846%238109%231935&pdp_ext_f=%7B%22sku_id%22%3A%2212000030571182616%22%2C%22sceneId%22%3A%223339%22%7D&pdp_npi=2%40dis%21USD%2166.0%2163.36%21%21%21%21%21%400b1b7b3e16679779455622245ea018%2112000030571182616%21rec

[@user-vs8je4ws3j]

is it 125 or 300?

[@elvirawu9495]

both fitment

[@elvirawu9495]

xmax125 250 300 400