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Crankshaft PIAGGIO for Vespa 125 GTR 2°/TS 2°/150 Sprint V 2°/Super 2°/P125-150X/PX125-150 E/Lusso/MY
Part no.: 13315400
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1,65kg / Piece
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Crankshaft PIAGGIO

for Vespa 125 GTR 2°/​TS 2°/​150 Sprint V 2°/​Super 2°/​P125-150X/​PX125-150 E/​Lusso/​MY

  • disc valve
  • stroke 57,0mm
  • conrod 105,0mm
  • Connecting rod bearing: 15x19x20 mm
  • pin 15mm
  • cone 24/25mm
  • Ø Oil seal seat on flywheel side: 24 mm
  • Ø Bearing seat on flywheel side: 25 mm
  • Thread on flywheel side: M12x1,25
  • valve timing: 112°/6° post TDC

Note 3 - simple repair
OEM number(s): 1331545 (PIAGGIO)
One rating
VAT included Free shipping
1,65kg / Piece
Part no.: 13315400

Product description

If you restore a long neglected Vespa motor then you will often find the crankshaft immobilised due to rust or corrosion. The bearings and oil seals are often worn out and woodruff key recesses are no longer serviceable. If you are overhauling your motor and your existing crankshaft displays any of these signs of age, it should be replaced.


The SIP crankshafts are "Made in Italy" and are characterized by particularly good quality. The SIP PREMIUM crankshafts are used as a replacement for the original crankshaft. They are made in perfect quality.


MAZZUCHELLI has been delivering premium quality Vespa crankshafts with excellent value-for-money, for decades. They are 100% identical to the originals in appearance, production quality and port timings.


Over the years PIAGGIO have used both low and high primary compression crankshaft setups. The early models also had bronze bushes instead of bearings installed on the con rods of their crankshafts. We have categorised the crankshafts according to manufacture information and original PIAGGIO parts catalogues. We provide all the specific data, necessary to identify the particular details of exactly the item you require for your type of engine: Ø gudgeon/crank pin, conrod length and stroke. Please check all measurements of your existing crankshaft against these listings before ordering to ensure you receive the correct item. All of the above crankshaft details and more are available at our website


Conclusion: Perfect for complete motor overhauls and mild motor tuning projects.


SIP-TIP: New crankshaft bearings, oil seals and the suitable woodruff keys, gasket set, nuts, safety washers are a must. To make the job a lot easier we also have all relevant crankshaft assembly tools available at our shop (PART No 27338000, 21071000, 18119000).


SIP customer Olov S., Malmö, Sweden:

"Incredible. I am at the moment renovating two GS150, and in both cases the crankshafts where bad. I believed that it would be impossible to find new ones for such an unusual model, but you had them! And for a reasonable price, comparable with the cost for a renovation of the old!!! "


Please note: The notch for locking washer castle nut is missing on the clutch side of the crankshaft stump. When using PX clutches we recommend to use the DRT nut and washer (Part no 11351940)


The timings stated above were determined viewing in the direction of the clutch side. That means: "138°/6° after TDC: Inlet timing begins 6° after TDC and stays open for 138°.

Please note that the angular degrees given here are approximate values, as the crankshafts are reworked by hand.


OEM numbers (for comparisons): 1331545 (PIAGGIO)

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