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Racing Cylinder D.R. 102 cc
for Vespa 50/​PK50/​S/​XL/​XL2
Product No.: 10007000
Plus shipping
2,1kg / Piece
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Product Image for 'Racing Cylinder D.R. 102 ccTitle'
Product Image for 'Racing Cylinder D.R. 102 ccTitle'
Product Image for 'Racing Cylinder D.R. 102 ccTitle'
Product Image for 'Racing Cylinder D.R. 102 ccTitle'
Product Image for 'Racing Cylinder D.R. 102 ccTitle'
Product Image for 'Racing Cylinder D.R. 102 ccTitle'

Racing Cylinder D.R. 102 cc

for Vespa 50/​PK50/​S/​XL/​XL2
  • cast iron
  • 6 ports
  • Ø 55,0mm
  • stroke 43mm
  • 2 piston ring(s)
  • with cylinder head
  • M6 exhaust studs
SPORT-TUNING, high-performance & roadworthy
For race use only. Not admitted in the area of the German StVZO!

Product description

Doppia 50cc, from here on there is 100% more capacity! DR welcomes you to the 102cc class. Anyone on the lookout for more power will find the way in here. Powerful fun for the city, for two riders, or for the pleasurable trip to the Italian restaurant is guaranteed.

High-quality DR cylinder, neat finish, 6 transfer ports provide appropriate torque. Important for all kits from 102cc: the primary transmission must be replaced. Recommended primary ratio is the 3.00, the 2.86 can in some cases already be too high. Due to the large bore and the small cylinder diameter, however, everything from 102cc upwards is to be enjoyed with caution as far as heat build-up is concerned. DR has here tried to reduce this build-up somewhat and painted all cylinders black for better dissipation of heat. There is also better protection against corrosion free of charge.

Conclusion: Ideal entry cylinder in the 102cc class, superb partner for the city. High-torque for use with 2 people. For long distances or longer stretches at full-throttle it is better to use the > 125cc cylinder.


Cast iron/ 55mm bore/ 6 transfer ports/ 102.16cc

Cast iron cylinder, stroke 43mm, 6 transfer ports, divided into 2 side transfer ports and a boost port divided into four, pistons with 2 piston rings and plane cylinder head, 6mm exhaust studs, original DR cylinder head included in delivery, incl. gasket set. Jets should be adjusted.

Fits all Vespa 50/PK/XL/XL2 models, except PK automatic. Transfer ports match the originals, casing can but does not have to be modified.


SIP-TIP: Adjusting the main jet and a new spark plug is a must also change of transmission, min. a 3.00 primary, max. 2.86 with reinforced clutch and/or stronger springs. Racing shaft and carburettor size from 16/ 16 recommended, or better a 19 carburettor with intake manifold. You can easily make the cylinder happy with an original exhaust with a wide manifold or the SITO banana.

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102ccm genau die richtige Entscheidung.

Mit entsprechender Übersetzung ist der Roller mit 102ccm sehr entspannt auf längeren Touren zu fahren.


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50 spezial RupertM November 22, 2020 19 View Notepad

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Questions & Answers

Let us and the community help you! Here you can ask your questions about the product.


Filename File type Description File size
Technik_Zylinder Technik Zylinder Vespa 46,55 MB Download
DR102ccm_Datenblatt DR102ccm_Datenblatt.pdf 0,24 MB Download
Tuningübersicht Smallframe Tuningübersicht Smallframe 0,20 MB Download
Technik_Zylinderkopf Technik Zylinderkopf 0,38 MB Download
Montage_Polini130ccm Montage Zylinder Smallframe 8,43 MB Download
Cylinder head technology Cylinder head technology 1,60 MB Download
Cylinder technology Cylinder technology 6,14 MB Download
Mounting of a Vespa smallframe cylinder Mounting of a Vespa smallframe cylinder 0,39 MB Download
Smallframe cylinder assembly Smallframe cylinder assembly 0,44 MB Download
Tuning summary smallframe Tuning summary smallframe 1,87 MB Download
Leistungsdiagram DR102 19.19 24_72 serienmotor GVG Leistungsdiagram DR102 19.19 24_72 serienmotor GVG.pdf 0,17 MB Download
Power Graph DR102 19.19 24_72 serienmotor GVG Power Graph DR102 19.19 24_72 serienmotor GVG.pdf 0,20 MB Download

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