39.97mm - oversize piston complete, new
Oversized piston with 2 piston rings, piston pin and 2 snap rings.
Fuel nozzle: at least size 30cc or larger.
With 2 locking pins for the piston rings.
Recommendation: Cylinder honing dimensions 0.08 to 0.10mm.
NOTE on running in:
Entry time at least 200km with a mixing ratio of 1: 30/1: 35. No full throttle.
Suitable for the VeloS-models from year of construction 1956: 1400, 1700, 2200, 3300, 3800, the VeloS-models Impex S 3800 and Roland Garros (Hungary from year 1993 to 2004) with plastic handles, 4600 (export USA), 5000 (also Dutch), Flash, 6000, Dutch oto/ami, Micron and the model Black'n Roll S4800.
The VeloS-models built before 1956 have a nose piston.
NOTE:
Suitable for the aluminum cylinder and the cast cylinder.
Not an original. Reproduction.
Honing and recoating aluminum cylinders, honing cast cylinders more information at www.mec-racing.de
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