Used Air Injector Removal Tool For Ditech 50cc's (APU_8140431_20200327_1)
Used Air Injector Removal Tool
For '00-'04 SR50 Ditech and '01-'04 Scarabeo 50 Ditech
Though we can typically remove air injectors by hand and with careful wiggling, Aprilia did actually make a special tool for just this purpose, and this is that tool.
If you've got an injector that absolutely will not come out, this tool is probably the answer.
Retail was $230