551, Re branded as Radi-CAL™ R1.

R1 is a brake and clutch fluid suitable for all forms of motorsport and conforms to FMVSS 116 DOT3 specification.

R1 is magnesium compatible and has a higher boiling point than normal brake fluids intended for road use.

Designation.  
- Radi-CAL™ R1.

 ‘Typical’ Boiling Points.
- New Dry 269°C
- ‘Wet’ E.R. 140°C

Part Number.  
- CP7551-20 (Case of 20x500ml bottles)