These CSL Load Cell Brake Pedal springs provide a cheap and easy mod/upgrade to change the default feel of the LC (Load Cell) Brake Pedal. Many people feel the pedal is too stiff and doesn't have enough range of movement, and these mods help address that problem. In additional to the CSL pedals, these springs can be used on the CSL Elite v1 and CSL Elite v2 Load Cell pedals to provide a similar function. Although these can be used for CSL Elite v2 Pedals, these are a better fit: https://www.ebay.co.uk/itm/186371165091 **NOTE** If you are looking a mod for the CSL non load cell brake (two pedal kit), throttle or clutch pedal mods, then you need these dampeners: https://www.ebay.co.uk/itm/186371129275 The colours are as follows: Pink: (Very Light) Yellow (Light): Max Load 32 KG/ 314N - Max Compression Rate: 50% Blue (Medium): Max Load 54 KG/530N - Max Compression Rate: 40%; Orange: Somewhere in-between the blue and red springs Red: (Medium/Hard): Max Load 80KG/784N - Max Compression Rate: 32% Green (Hard): Max Load 120kg/1176N - Max Compression Rate: 24% You can mix and match if you want to change the look and feel, for example for a more progressive, lighter first then harder.