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This is a replacement ProTek R/C Wrist Pin for use with the RM.1, RM, S03 and R03 Nitro Engines. The wrist pin is the small pin that goes through the piston to attach the connecting rod.
You will need wrist pin clips to hold the pin in place and it is recommended to use brand new wrist pin clips each time you re-install a wrist pin (PTK-2606).
This product was added to our catalog on June 14, 2019