Crankshaft Ottopuntouno 8.1 70cc for Fireblade // Polini PRE (39.3mm/90mm)

Find here from the Italian manufacturer OttopuntoUno (8.1), the 39.3 mm stroke crankshaft (original type stroke) and 90 mm connecting rod for Polini PRE, 2Fast Passion and 8.1 Fireblade engines.

Hyper Racing type, this crankshaft is made of high quality steel and has a 90 mm connecting rod held by an 18 mm crankpin. The crankshaft masses measure 76 mm in diameter and have tungsten inserts ensuring proper balancing for the "8.1" 70 cc cylinder. The crankshaft is initially designed to fit with an OttopuntoUno cylinder kit but will of course fit other 70cc and 80cc cylinders on the market.

This R-18 version is designed to fit into a Polini PRE and 8.1 Fireblade engine case, but you will need to mill the engine case to accommodate the crankshaft weights. Weight diameter: 76mm

- Stroke: 39.3 mm (original)
-Connecting rod: 90 mm
-Crankshaft mass diameter: 76 mm
- Needle cage: 12x17x15 mm
-Connecting rod pin: 18 mm
-Weight: 1.75 kg.
-For Polini PRE, 2Fast Passion and 8.1 Fireblade engines

Find here from the Italian manufacturer OttopuntoUno (8.1), the 39.3 mm stroke crankshaft (original type stroke) and 90mm connecting rod for Polini PRE, 2Fast Passion and 8.1 Fireblade engines.

Hyper Racing type, this crankshaft is made of stainless steel. high quality and has a 90 mm connecting rod held by an 18 mm crank pin. The crankshaft weights measure 76mm in diameter and hold tungsten inserts ensuring proper balancing for the "8.1" 70cc cylinder. The crankshaft is initially designed to fit with an OttopuntoUno cylinder kit but will of course fit other 70cc and 80cc cylinders on the market.

This R-18 version is designed here to mount in a Polini PRE engine casing. and 8.1 Fireblade but you will have to mill the engine casing in order to fit the crankshaft masses. Diameter of the masses: 76mm-

- Stroke: 39.3 mm (original)
- Connecting rod: 90 mm
- Diameter of the masses of the connecting rod: 76 mm
- Needle cage: 12x17x15 mm
- Connecting rod pin: 18 mm
- Weight: 1.75 kg.
-For Polini PRE, 2Fast Passion and 8.1 Fireblade engines