Castrol SRF Brake Fluid - React SRF Racing is a high-performance brake fluid designed specifically for racing vehicles. With a volume of 1 litre and a Dot 4 brake fluid type, this product is manufactured by Castrol and suitable for use in motorsport applications. The manufacturer part number for this product is 15F1D0, making it easily identifiable for those in need of a reliable and efficient brake fluid for their racing vehicles. free Next day delivery with dhl any questions send me a message.