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WebshopVespa Smal...Spare Part...Ignition P...Flywheel SERIE PRO HP4 2014,
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Flywheel SERIE PRO HP4 2014,

for pick-up ignition, for
Vespa 50-125/PV/ET3/PK50-125/S
flywheel: 1000g, black, cone
19/20mm, M10,
2014 version

Brandnew in Program! New in stock and now avaible at SIP.

 

The flywheel originating from the Vespa PK50/XL/HP, with its low weight of only 1 kg is also capable of accelerating every other Vespa model with electronic ignition.

 

The HP4 flywheel for the PK/XL and PX models is supplied in two versions to fit to the two different types of crankshaft profile. The version for the smaller 19-20 mm cone is also popular when upgrading an earlier small-frame motor to electronic ignition. The fan part of the flywheel is made of plastic and can be removed. The relatively light weight (1kg), as opposed to an original flywheel (up to 3kg), allows a noticeably more direct throttle response and higher engine revolution range. You can even resuscitate original cylinders with this flywheel.

 

The diameter and size of the fan part of the flywheel is considerably smaller then with the original PX flywheel and therefore less suited for the next Saharan safari.

Since the motor will become somewhat more aggressive through use of this flywheel please pay attention to the following points:

- make sure of the correct size flywheel corresponding to your crankshaft employed

- order the stator pack-up plate spacer (art. no. 50011300) to avoid misalignment of the pickup

 

Conclusion: An enormous tuning effect for minimal effort. Ideal for street racers.

 

Flywheel HP4

1000g, balaned, cone depending on version 19/20 or 20/20 - 24/25mm, removable fan

 

SIP-TIP: If you experience misfiring after fitting HP4/PK flywheel to your PX motor this usually means that the stator-plate and flywheel are misaligned. The stator pack-up plate spacer solves this problem by raising the profile of the stator-plate back into alignment with the flywheel. For electronic ignition conversions also order the CDI unit, voltage regulator, wiring loom and 12V bulbs for all lamps.

 

SIP community user “CHRIS” about part no. 50010000: “Mate!!! The revs shoot straight up with this item, its the business. You could already consider that your road-going Vespa has mutated to a full blown racer :-). So, whoever is after a not so obvious tuning method, I can recommend this gem. (not for use by Sunday riders, due to high danger of wheelies)”


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$116.36
Art.No.
50011200
1,450g / piece
Stock on hand   Amount

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fits on the following articles
divider Productname divider Art. No. divider Price divider Stock
Conversion Kit HP4 ignition, for Vespa 50-125/PV/ET3/PK50 -125/S 50016J00 $257.08
icon scootermodels This product fits the following models
  VESPA
divider Producer/Model divider cc divider Type divider Engine divider Yr. of Const. divider Extra
VESPA 50 / N 50 V5A1T 2T AC `63-`71
VESPA 50 L 50 V5A1T 2T AC `66-70
VESPA 50 R 50 V5A1T 2T AC `69-`83
VESPA 50 Revival 50 V5R1T 2T AC `90-
VESPA 50 S 50 V5SA1T 2T AC `63-`84
VESPA 50 Special 50 V5A2T 2T AC '69-'72
VESPA 50 Special 50 V5B1T 2T AC '72-'75
VESPA 50 Special 50 V5B3T 2T AC '75-'83
VESPA 50 Special Elestart 50 V5B4T 2T AC '75-'76
VESPA 50 Special Elestart 50 V5B2T 2T AC `72-`75
VESPA 50 Special Elestart 50 V5A3T 2T AC '69-'72
VESPA 50 SR / Sprinter 50 V5SS2T 2T AC `71-`79
VESPA 50 SS / Super Sprint 50 V5SS1T 2T AC `65-`71
VESPA 90 90 V9A1T 2T AC `63-`84 25001 ->
VESPA 90 Racer 90 V9SS2T 2T AC `71-`74
VESPA 90 SS Super Sprint 90 V9SS1T 2T AC `65-`71
VESPA 100 (UK) / 100 Sport (US) 100 V9B1T 2T AC `78-`90 -> 50000
VESPA 125 125 VMA1T 2T AC `65-`67
VESPA 125 Primavera 125 VMA2T 2T AC `67-`83
VESPA 125 Primavera ET3 125 VMB1T 2T AC `76-`90
VESPA PK 50 50 V5X1T 2T AC `82-`84 -> 14531 (small cone)
VESPA PK 50 S / Elestart 50 V5X2T 2T AC `82-`84 -> 181678 (small cone)
VESPA PK 50 S / Elestart 50 V5X2T 2T AC `82-`84 3000001 -> 3007754, (electric start)
VESPA PK 50 S Lusso / Elestart 50 V5X2T 2T AC `85-`88 -> 181678 (small cone)
VESPA PK 80 S / Elestart 80 V8X5T 2T AC `82-`86 -> 5634
VESPA PK 80 S Lusso / Elestart 80 V8X5T 2T AC `85-`88 -> 5634
VESPA PK100 S / Elestart 100 V9X1T 2T AC `82-`84 -> 41358, small cone
VESPA PK125 125 VMX1T 2T AC `82-`85 -> 7412

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