G305 kit instructions v2.0

These instructions are for all Logitech G305 based mods.


You can find video instructions here.


[1] Parts required 1/2
Top shell, bottom shell, 2x clips, AAA USB battery, zip tie, mouse feet, redrill screwholes if needed: Bottom 4 screw holes are 1.8mm, all other ones are 1.3mm.

[2] Parts required 2/2

G305 electronics including screws (Disassembly: https://www.youtube.com/watch?v=DnjzewHyjr8)


[3] Tools required
Small screwdriver, cable cutter, hair dryer


[4] Screw types
From left to right: switch screws, PCB screws, side button screw, bottom screws


[5] Add on/off switch

Pay attention to the orientation!


[6] Add mouse wheel

Insert the mouse wheel in the encoder and add the small spring


[7] Add PCB screws to the clips

Fastening them all the way is the way to go


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


[9] Place the PCB on the shell
Make sure the small spring sits in the small grooves


[10] Check the on/off switch position
Make sure the on/off switch can be moved in both directions and the PCB is touching the bottom shell


[11] Add the 5 PCB screws
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!


[12] Bend the side buttons
Give them a bit of curvature


[13] Insert the side buttons..
..in their slot. All the way!


[14] Add side button screws
You can bend the side buttons towards the PCB again.


[15] Add the side button PCB
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.


(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


[16] Fasten the switches to the clips
Fasten the switches to the clips using 4 PCB screws.
[17] Connect the switches to the PCB
Pay attention to the orientation of the pins. (Marked green and red)


[18] Add the springs and battery
Add the springs as shown in the picture and pay attention to the battery's orientation. If you have an older version of this battery holder jump to step 19. If not jump to step 27.


[19] Twirl the zip tie
Wrap the zip tie around the screwdriver to give it's end some curvature


[20] Insert the zip tie
(As shown on the picture)


[21] Insert the minus spring
Make sure it sits in it's pocket. The minus spring is the larger of the two.


[22] Add the battery
It makes things easier to not push them in all the way immediately. Have it in the position as shown on the picture.


[23] Add the plus spring
Make sure it sits in it's pocket, then push in the battery.


[24] Check the position
The battery spring extension should sit in the gap on the right side.


[25] Check battery orientation
The micro USB port should face the hole.


[26] Fasten the zip tie
..and clip it off using the cable cutter!


[27] Check the mouse button height
 The calibration later works best if the mouse button is located slightly higher than the mouse sides.


[28] Bend the buttons up
If the mouse buttons sit too low, gently heat up the area marked red with a hair dryer and bend the mouse buttons up.


[29] Add the magnetic adapter

If you have a magnetic adapter, add it now. You can get these on amazon. Search for: micro USB magnetic adapter


[30] Connect the battery
Pay attention to it's orientation


[31] Pair both shells
Start in the front. The two holed pins of the top shell in the front need to go under the PCB.


[32] Add bottom screws
Once you sucessfully paired both shells (a bit of bending might be required), add the four bottom screws and calibrate the mouse buttons.
[33] Add 3 bottom screws
Add 3 of the smallest screws (switch screws) on the bottom for additional stability.
[34] Calibration screw
You want to screw this screw in and out to achieve your desired click sensitivity.


[35] Add mouse feet
As last step, add your mouse feet. We recommend Hyperglides (G1) or Corepads (G305).


[36] Download LGS
To change the DPI download Logitech Gaming Software


[37] Set DPI and polling rate

Since the mouse does not have a DPI button, you need to set it in the Software. Make sure the polling rate is set to 1000hz!


Enjoy gaming.



If there are any questions feel free to contact us.