for R75/6 R75/7 R80/7 and after 9/1975 for R90/6 and R90S
Developped from the Powerkit 1100080 : Up to 10 HO more power and much more torque even for older models.
More power and torque for R75, R 80, R90 models from 1975 (with crankcase opening of 99mm) to 1980 in the complete range of the numbers of revolutions. Gasket set article 1100102 is required for installation. Look also at Power Kit Extra article 1100085. An increase of power up to 64 HP/47 kW. 30% more torque: Less exhaust fumes and lower fuel consumption.
No need to modify your cylinder heads.