The products for Helo Wheel Center Caps only suit for Helo Maxx 6 Chrome Wheel. Its diameter is outer 101mm(3.98in), inner 98mm(3.86in), clip length 8.5mm(0.33in). Replacement of that are #789K101 #X1834147-9SF.
The products for Mayhem Wheel Center Caps suit for Mayhem Wheels. Replacement of that is #81232090F. Its diameter is outer 102mm(4.02in), inner 95mm(3.74in), clip length 8.5mm(0.33in).
These replace Corvette Center Caps for part 9594652 9594656 9596830 fit for 05088 05207 05209 05210.Size:Outer diameter---102.8mm(4.05in), Inner diameter---77mm(3.03in), Clip length---15mm(0.59in).
The products for Polaris RZR Wheel Center Caps suit for RZR 9001000XP4. Its diameter is outer 103mm(4.06in), inner 87.5mm(3.44in), clip length 4mm(0.16in). There is only one color to choose, Black.
The product of 4.21in Aftermarket Wheel Center Caps are designed for universal wheel which is outer diameter 107mm(4.21in), labeling diameter 55mm(2.17in), height 45mm(1.77in). Only one color can be chose,Black.