ProX Connecting Rod Kit 09230142 for Gas Gas EC 250 4T EC 250 E RACING EC 250 RACING EC 250 SIXDAYS EC250 EC250E EC250F EC300F Yamaha WR250F YZ250F

ProX connecting rod kit to fit Gas Gas EC 250 4T (2010–2011); Gas Gas EC 250 E RACING (2014–2015); Gas Gas EC 250 RACING (2008–2015); Gas Gas EC 250 SIXDAYS (2009–2011); Gas Gas EC250 (1994–2014); Gas Gas EC250E (2011–2014); Gas Gas EC250F (2012–2015); Gas Gas EC300F (2013–2015); Yamaha WR250F (2003–2013); Yamaha YZ250F (2003–2013).

This kit manages the critical connection in your bottom-end. It links the piston to the crankshaft, converting every stroke into drive. Big-end bearings eventually develop play, or the rod fatigues from high-RPM stress. Replacing the rod is standard practice during a full rebuild to avoid catastrophic failure. Each kit includes the rod, big-end pin, bearing, and thrust washers. These components match OEM specifications for a direct fit. You will need a hydraulic press and truing stand for installation. Precision is vital. Ensure your crank webs are perfectly aligned after assembly to prevent vibration through the bike.