BGM PRO Item number: BGM031080G
BGM PRO
3 Ratings
175,00 €*
available immediately
Shipping weight 2,13 kg

Solid BGM crankshaft for the PX80 models. The PX80 was manufactured for the German market and has a stroke of only 48mm (PX125 = 57mm). The most common damage to PX80 engines is a defective lower connecting rod bearing, usually caused by long idle times or worn connecting rod thrust washers.

The BGM crankshaft has a solid bearing here and also has no problems with the large tuning cylinders (125cc conversion cylinders, DR135, Malossi 139).

As a special feature, the BGM crankshaft has exactly the same intake timing angle as an original Piaggio crankshaft. This makes it the perfect 1:1 replacement for an original crankshaft. Compared to an original crankshaft, the balance factor has been improved and the intake area has been rounded and polished.

Delivery includes the upper connecting rod bearing. Order new crankshaft bearings and shaft seals if required. Installation tools and complete engine overhaul kits for simple and damage-free installation are of course also available in the store.

  • Stroke: 48mm
  • Piston pin Ø: 15mm
  • Connecting rod length: 105mm

Suitable for all PX80 engines (V8X1T/V8X1M)

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This is how we ensure, that reviews come from real consumers.
Anonym  05/15/2019

passt perfekt

Reiner H. from Augsburg 07/03/2025
Alexander T. from Bad Zwischenahn 07/09/2025
Ball bearing
Dimensions
15x19x20mm
 
Piston pin
Diameter
15 mm
 
Crankshafts
Stroke
48 mm
Thread on alternator side
M12x1,25 Rechtsgewinde
Thread on drive side
M12x1,5 Rechtsgewinde
Crank web diameter
98 mm
Crankcase must be spindled
nein
Motor housing must be modified
nein
Rotary vane crankshaft
nein
Full cheek crankshaft
nein
Bearing seat diameter on alternator side
25 mm
Bearing seat diameter on drive side
25 mm
Diameter of sealing ring seat on alternator side
24 mm
Diameter of sealing ring seat on drive side
31 mm
 
Connecting rod
Connecting rod length
105 mm
Connecting rod eye top diameter
19 mm
 
OEM numbers (for comparison purposes only)
Scooter Center:
BGM031080G
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