Formula rear hand brake master cylinder for the Stark VARG. Compatible only with the original Formula rear hand brake configuration on early VARG MX 1.0 models. Can be replaced by the more powerful Brembo master cylinder using conversion kit SMX1-BR-RWH2B-KT. Note: hose diameters differ between Formula and Brembo, so hoses, banjo bolts and copper washers are not interchangeable. Not compatible with a brake light switch.