Racing Cylinder D.R.

for Vespa 50 1
Serie
cast iron
3 ports

47,0mm
stroke 43mm
with cylinder head
cylinder base turned for V50 1
series

TUNING ROAD – for everyday use

For race use only. Not admitted in the area of the German StVZO! Product description
There is no substitute for cylinder capacity, except even more cylinder capacity! This wisdom still applies today. With the DR 75cc you have 50% more displacement at one go and as a result also more performance. Now you can cruise as a twosome to the ice cream parlour, with no problem. The DR can even deal with long distances at full throttle with no problem, thanks to the thick cylinder walls! In addition, all DR cylinders are painted black to protect against corrosion and for better heat dissipation. Anyone who would still like a bit more can work on the rather T-shaped exhaust and adapt the contour to a trapezoid shape.
Conclusion:
Ideal cylinders for starting 2-person operation, suitable for long routes and full throttle, very good service life. Cast iron/ 47mm bore/ 3 transfer ports/ 74.60cc Cast iron cylinder, stroke 43mm, 3 transfer ports, pistons with 2 piston rings, exhaust width chord dimension 29mm, 6mm exhaust studs, original DR cylinder head included in delivery, compression 10.7:1, incl. gasket set. Jets should be adjusted. Fits on all Vespa 50/PK/XL/XL2 models, except PK automatic. Transfer ports match the originals, casing must not be modified.