hi i have a 2014 gasgas 300 with the 48mm Marzocchi forks i just replaced the seals
the yamaha yz450f 06-13 dust seal and oil seal fit the marzocchi forks its a simple job you just need a seal driver and tools
https://www.rockymountainatvmc.com/p...ork-Cap-Wrench
https://www.rockymountainatvmc.com/p...rk-Seal-Driver