Racing Crankshaft, Pin Ø 12 mm
Maximization of performances
Resistance to extreme stress
Perfectly match the original
Race Use Only Product - Please check details on the "Race use only" footer's section
Description
Athena’s crankshaft are made of premium materials combined with the latest production technology. Designed for top-performance engines, they ensure maximum performance with high-powered engines in situation of greater stress. These products are also suitable for tuned-up engines and ensure maximum performance that lasts over time. Athena offers the following range of crankshafts:
a) Original: perfect replacement for the original crankshaft, but with improved balance and a lighter connecting rod. Each kit includes a special bearing cage.
b) Racing: available with hole for wrist pin of small end casing measuring Ø10mm or Ø12mm. Available with a lighter crankshaft and special bearing cages. Differs from the Original Kit for its solid crank shaft handles, made entirely by milling to reduce the volume of the crank handle case.
c) Long Stroke Racing: same as the Ø12mm Racing crankshaft, but with longer stroke. This kit can be combined with Athena Long Stroke Racing cylinder kit, to increase cylinder capacity to 80cm3.
Technical features
| Big End Bearing (mm) | 16x22x12 |
| Crank Radius (mm) | 20.00 |
| Net Weight (Kg) | 1.60 |
| Pivot Fly Wheel Diameter (mm) | 20.00 |
| Pivot Fly Wheel Length (mm) | 57.00 |
| Pivot Pulley Diameter (mm) | 20.00 |
| Pivot Pulley Length (mm) | 48.00 |
| Shoulder Width (mm) | 46.00 |
| Small End Bearing (mm) | 12x15x15 |
| Stroke (mm) | 40.00 |
Vehicle compatibility
| DERBI BULTACO LOBITO / ASTRO 50 cc |
| DERBI GPR R 50 cc |
| DERBI SENDA R 50 cc |
| DERBI SENDA SM 50 cc |
| GILERA RCR 50 cc |
| GILERA SMT 50 cc |
- Stroke (mm): 39.20
- Crank Radius (mm): 19.50
- Small End Bearing (mm): 12x17x15
- Big End Bearing (mm): 18x24x12
- Stroke (mm): 37.40
- Crank Radius (mm): 18.70
- Small End Bearing (mm): 12x17x13
- Pivot Pulley Diameter (mm): 20.00
- Stroke (mm): 43.00
- Crank Radius (mm): 21.50
- Small End Bearing (mm): 12x15x15
- Big End Bearing (mm): 16x21x10
- Stroke (mm): 40.00
- Crank Radius (mm): 20.00
- Small End Bearing (mm): 12x17x15
- Big End Bearing (mm): 16x22x12
- Stroke (mm): 41.00
- Crank Radius (mm): 20.50
- Small End Bearing (mm): 12x17x13
- Big End Bearing (mm): 18x24x12
- Stroke (mm): 40.00
- Crank Radius (mm): 20.00
- Small End Bearing (mm): 12x15x15
- Big End Bearing (mm): 16x22x12
- Stroke (mm): 39.20
- Crank Radius (mm): 19.60
- Small End Bearing (mm): 12x15x15
- Pivot Pulley Diameter (mm): 20.00
- Net Weight (Kg): 0.06
- Oil Seal Height (mm): 11.00
- Oil Seal External Diameter (mm): 54.00
- Oil Seal Internal Diameter (mm): 41.00
- Net Weight (Kg): 0.40
- Net Weight (Kg): 0.06
- Oil Seal Height (mm): 10.50
- Oil Seal External Diameter (mm): 53.00
- Oil Seal Internal Diameter (mm): 41.00
- Net Weight (Kg): 0.05
- Oil Seal Height (mm): 11.00
- Oil Seal External Diameter (mm): 54.00
- Oil Seal Internal Diameter (mm): 43.00
- Net Weight (Kg): 0.05
- Oil Seal Height (mm): 10.50
- Oil Seal External Diameter (mm): 52.00
- Oil Seal Internal Diameter (mm): 40.00
- Net Weight (Kg): 0.29
- Net Weight (Kg): 0.05
- Oil Seal Height (mm): 11.00
- Oil Seal External Diameter (mm): 48.00
- Oil Seal Internal Diameter (mm): 35.00
United States