WP KTM Lanier Epica Cartridge XC Forks AER 125 250 300 350 450 SX Sxf XCF. From 2017 Xc 300, 6 hours on last service by Graeme Brough. 44kg springs and 52kg springs included, option to mix springs will give 48kg. Clickers have wide range of adjustment, plus external preload and progressive hydraulic damping adjustments. Current setup is enduro/woods B vet w/44kg springs (soft) I can swap to 48 or 52kg if you choose.