G305 kit instructions v2.1

These instructions are for all Logitech G305 based mods.


You can find video instructions here.

You can find video G305 disassembly instructions here.




Parts required
Top shell, bottom shell, 2x clips, magnetic adapter, AAA USB battery, mouse feet, redrill screwholes if needed: Bottom 4 screw holes are 1.8mm, all other ones are 1.3mm.


 Tools required
Small screwdriver: Known as Phillips screwdriver


Screw types
From left to right: Bottom screws, side button screw, PCB screws, switch screws


[1] Add on/off switch

Pay attention to the orientation!


[2] Add PCB and fasten

Stop tightening them once the screw heads touch the PCB. They cut their own thread and we don't wanna destroy it by over-tightening the screws!


[3] Add mouse wheel

Insert the mouse wheel in the encoder and add the small spring. Make sure the small spring sits in the small grooves


[4] Add side buttons
..in their slot. All the way! 


[5] Fasten the side buttons
Take care not to over-tighten the screws!


[6] Bend side buttons inwards
Give them a bit of curvature


[7] Add sidebutton PCB and plate screw
Since we bent the side buttons, they should already activate the side button switches. By bending them outwards gently we can have them in a position without any gap. When you don't have a gap, add the side button screw.


[8] Add mid screws to the clips
Fastening them all the way is the way to go


[9] Add the clips to the PCB
Make sure the holes are properly aligned 


(G303: Cut the left switch PCB)

If you are doing the G303 Wireless mod, you need to cut the left micro switch PCB along the black lines using the wire cutter


[10] Add micro switches 
Fasten the switches to the clips using 4 mid sized screws


[11] Connect the switches to the PCB
Pay attention to the orientation of the pins



If you have a P-SL S, M or L mod kit please continue following instructions here.
[12] Add small battery spring - red cable
[13] Add large battery spring - black cable


[14] Add battery
Pay attention to the battery's orientation!

[15] Add magnetic adapter with the cable


[16] Connect the battery

Plug in battery cable, pay attention to it's orientation!


[17] Add the screws
Two large screws in the back


Two large screws in the front


4 Small screws on the places marked in the picture (switch screws)
[18] Add mouse feet
Add mouse feet to your mouse as shown in the picture
[19] Download 
Download Onboard Memory Manager and set Report Rate to 1000 for the best experience.


Check out further instructions here.

For calibration instructions, click here.


Enjoy gaming.



If there are any questions feel free to contact us.