Boxer crankshaft balancing
R 100 and R 80 engines share the same crankshaft and connecting rod, the pistons however differ by 140g. We weight all of our connecting rods, pistons, gudgeon pins, circlips to and accuracy of half a gram, differentiate between rotating and oscillating masses and balance the crankshaft dynamically.
Your engine will thank you for low vibrations during operation and enhanced lifespan.
Siebenrock Replacement Kit
for all R100 models from September 1980, now with 4 pc. stainless steel pushrod tubes (no. 112001) !!!