This is the HD4 (heavy duty) 4-speed crankshaft, manufactured exclusively for Casa Performance in Italy. It is a plug 'n' play crank for all smallframe Lambretta 4-speed Lui/Vega/Cometa 75cc and J125 Starstream engine casings. Please note that this will NOT fit 3-speed engine casings.

Made to our design, these race quality plug 'n' play cranks have forged webs, tungsten counter-weights, a forged 'H' profile type conrod, silvered bearing cages and are extremely high quality.

Although primarily designed to be used with the Casa Performance CP One35 135cc cylinder kits, they are also suitable for standard engines as well.  

Total width of the webs = 40mm
Con rod = 48mm stroke
Small end bearing (supplied) = 16mm

To be used with drive side bearing M209 and flywheel side bearing M217 (or Casa performance CNC mag flange kit X803 with bearing M218zz) and oilseal set M118.