Ninja JX Piston/Sleeve Set by Mugen Seiki
This is a replacement Mugen Ninja JX Piston/Sleeve Set, and is intended for use with the Mugen Ninja JX21-B02 .21 nitro engine.
NOTE: You will need to detach the old connecting rod and re-attach it to the new piston/sleeve during replacement. We recommend that when you replace the piston/sleeve on any engine, you also change the connecting rod and wrist pin clips.
This product was added to our catalog on August 17, 2011.