This upgrade applies to both the Standard and the Stiffener versions.
You will receive the components in red:
SDIY(250) 4 Rung Frame (x2)
SDIY(250) Horizontal Brace 1550 (x2)
SDIY(250) Diagonal Brace 1850 (x2)
SDIY Trapdoor Platform 500×1550
DIY XL Outrigger Extension Kit (x4)
DIY 125mm Adjustable wheels (x4)