The disk will help prevent tyre chunking on side impacts.
Contact RC Mini Rear T Foam 35Sh, 48mm diam. JM35RT
Contact RC GT12 Rear K Foam 35Sh - 46mm JG35RK C
Contact RC GPR 220mm Rear 37Sh - 68mm JD37R C
Contact RC GT12 Hex Rear 37Sh Control Tyres 46mm JG2CR C
Contact RC Foam Tyres - 1/10 Rear L30Mm Damp J11504
Contact RC 1/12 Hex Rear 35Sh K Foam - 46mm JT3-35RK