Kolben

Spring ring 6.00mm galvanized, new

Nomenclature no. 10.031 valid from March 1967 and from engine no. 3.800.000.

Snap ring 12.00mm for piston pin, new

Suitable for example for the models 45 to 3800, the models Impex S 3800 and Roland Garros (Hungary - from 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.

2 pieces are required for installation.

Not original. Reproduction.

Retaining ring 12.00mm for piston pin, new

Suitable for example for the VeloS-models 45 to 3800, the VeloS-models Impex S 3800 and Roland Garros (Hungary -from year of production 1993 to 2004) with plastic handles, 4600 (export USA), 5000 - also Dutch, Flash, 6000, Dutch VeloS-oto/ami, Micron and the model Black'n Roll S4800.

2 pieces are required for installation.

Not original. Reproduction.

Piston pin, new

Dimensions:
Length: 30.50mm.
Diameter: 12.00mm.

39.50mm - standard piston naked, new

Without locking pins for the piston rings.

Suitable for the VeloS-models from 1956 onwards:
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 VeloS-oto/ami, Micron and the model Black'n Roll S4800.

Matching piston rings no 60817.

The VeloS-models built before 1956 have a nose piston.

NOTE:
Suitable for the cast zylinder.

Not an original. Reproduction.

Connecting rod aluminium without bearing, new

Suitable for example for the VeloS-models and the model Black'n Roll S4800.
Suitable for this: connecting rod bearing at the top no. 60499, connecting rod bearing below no. 60466 and bushing for crankshaft no. 60849.

Not original. Reproduction.

40.45mm - 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 example 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 VeloS-oto/ami, Micron and the model Black'n Roll S4800.

The VeloS-models built before 1956 have a nose piston.

NOTE:
Suitable for the cast cylinder.

Honing and recoating aluminum cylinders, honing cast cylinders more information at www.mec-racing.de

40.95mm - 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 1956: 1400, 1700, 2200, 3300, 3800, the VeloS-models Impex S 3800 and Roland Garros (Hungary from 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 model.

The VeloS-models built before 1956 have a nose piston.

NOTE:
Suitable for the cast cylinder.

Honing and recoating aluminum cylinders, honing cast cylinders more information at www.mec-racing.de