for R100 models up to 9/1980
More power and torque for all R100 modells (to 1980) in the complete range of the numbers of revolutions . Look also to Replacement Kit Extra article 1100105.
Replacement Kitfor R100 models up to 9/1980Gasket set article 1100102 is required for installation. Less exhaust fumes and lower fuel consumption. The forged pistons are about 110 grams lighter than the originals parts. With a compression of 9,5