21361 - Pipe adaptator 8,3cc Side Exhaust + 21371 for Cesare Rossi Pipes
The CR9 pipe is a direct fit to the R91F engine.
However, for the R50F you need an adaptor (partnr: 21361) to use with the CR5 pipe.
The R60F engine requires also an adaptor (partnr: 21461) to be fitted with the CR6 pipe.
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