Crankshaft complete for Yamaha FS1, High quality crankshaft final checked and fine calibrated (aligned) in Sweden.

Direction, (balance between halves, picture 3 ): max run out = <0,03/side. In weight ratio very well balanced crankshaft for optimal function and very little vibration, especially when used with NTS pistons. Supplied complete with needle bearing for piston pin. Technical data: Needle bearing: 12x15x16(for 12mm piston pin) (13684) Cone for flywheel: Taper 1:6 (input diameter ~13,5mm) Thread flywheel side: M12x1,25 Thread transmission side: M12x1 Cross key, flywheel: 3×5 (14940) not included Stroke length: 40mm