DR Item number: 192KT00088
DR
115,00 €*
available immediately
Shipping weight 1,75 kg
Grey cast iron cylinder with a full displacement plus to 70ccm. The processing is on a very good level and is to be compared throughout with the quality of the series cylinders.

The cylinders of the company D.R. (Diffusione Ricambi) enjoy a very good reputation. Already in the shift scooter sector DR has developed powerful cylinders with a long life span at a reasonable price. So one can almost make a general recommendation for the automatic sector for those who want to make their scooter faster without much effort.

The DR distinguishes itself by a generous plus in displacement, optimized control times and above all larger channel widths, especially the overflow valve. The DR philosophy is to give the cylinders a wide speed band with plenty of torque from the lower speed range. This also makes the DRs interesting for tuning mufflers, so there's not much effort required.

The DRs respond extremely well to further -after-treatment - by means of a suitable exhaust and carburetor. This way the performance is increased again significantly without any loss of reliability.

The 70cc D.R. is our secret favourite. The price/performance ratio is very good and the performance is almost at Polini level. But the D.R. has the richer torque and rides fuller. Longevity is not an issue with these cylinders and they even forgive the one or other jam in case the joy of experimentation was too much.
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General
Performance class
Sport
 
Piston pin
Diameter
10 mm
 
Spark plugs
Thread type
M14x1,25
Thermal value NGK
B9HS
Spark plug thread
kurz
 
Cylinder
Drill hole
47 mm
Type of cooling
luftgekühlt
Displacement
68 cm³
Motor type
2-Takt
Material
Grauguß
Piston raceway material
Grauguß
Cylinder gasket set included
ja
Cylinder head included
ja
Outlet shape
1-teilig (oval)
Exhaust assembly
Flansch
Flange type
2-Schrauben
Distance between exhaust studs
48 mm
Threaded exhaust studs
M6
Number of boost ports
1
Number of transfers (incl. boost ports)
5
 
Crankshafts
Stroke
39.2 mm
 
Piston
Number of piston rings
2
Piston manufacturing method
gegossen
 
Piston rings
Piston ring type
Rechteck-Ring
Piston ring thickness
1,2mm
 
Piston clips
Piston clip type
G-Typ
Wire gauge Piston clip
1,0mm
 
Cylinder heads
Cylinder head type
einteilig
 
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