Amazon.com: Nintendo Circle Pad Pro for Nintendo 3DS XL : Video Games
Modding New 3DS XL with PSP-1000 Analog Stick (Also Works on Other "New" Systems!) | GBAtemp.net - The Independent Video Game Community
Nintendo 3DS 2015 C-Stick Replacement - iFixit Repair Guide
Amazon.com: Partsatoz Pack of 2 3D Analog Joystick Button Control Thumb Stick with Thumbstick Circle Pad Cover Cap Replacement for Nintendo 2DS 3DS 3DS XL LL (NOT for New 3DS New 2DS