RCU Forums - View Single Post - New Evolution 10cc gas engine
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Old 02-19-2019, 05:39 PM
  #2223  
ahicks
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Double check me, but thinking the OS 40, 45, and 55AX all use exhaust ports that line up with the 10gx. Many are using OS mufflers due to all the trouble with the Evo mufflers....