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Byron Rothenhoefer

R2 pipe? Most  series are running  either the RLV R4 or the SKUSA pro circuit pipe . The R2 pipe is very dated. Don’t know if you plan on racing at all or just track time, but most of the series running  stock/spec  honda mandate a pipe. (Assuming your cr125 falls into that category, it is the most popular shifter class)

Stock Honda 13