SSP-G QMB139 Stroker Crankshaft 250W Fits VSX prior to frame

Fits VSX prior to frame number VSX1T 34627

Length (End to Bend): 9 3/8"

mounting brackets

Installation Note: Inspect your engine pivot bolt and swing arm bearings while the buffers are removed

NIU OEM Parts are the original parts installed when your NIU was new

SSP-G QMB139 Stroker Crankshaft 250W Fits VSX prior to frame44mm Stroker Crankshaft Assembly for 50cc 4 stroke QMB139 engines. Overall Length: 247mm Thread Size (tapered side): M10x1. 25 Thread Size (spline side): M12x1. 25 Bearing Outer Diameter (tapered side): 42mm Bearing Outer Diameter (spline side): 47mm Number of Splines: 26 Connecting Rod Inner Diameter: 13mm Number of Teeth (oil pump drive gear): 16 (use with 33t oil pump) QMB139 50cc 49cc This product is not intended for use on public roads or land.