The 170/550R13 N2968 is the control tyre for the Caterham Graduates, Ma7da Series and one of the control sizes for the Sports 1000 championship.
For the Caterham's and Sports 1000's the tyres require barcodes on them for Championship Regulations.
A direct replacement for the hugely popular SRF brake fluid, Castrol React SRF racing brake fluid is specially formulated to maximise braking performance in competition conditions. React SRF DOT 4 brake fluid has a very high boiling point of over 300 degrees celsius making this fluid ideal for even the most extreme conditions