Transmission tray par new chain adaptable for motorcycle 50cc Derbi Senda SM, Gilera SMT before 2010, Derbi Senda R et Gilera RCR since 2000, Rieju MRT, Yamaha DT ...
Technical characteristics of the crown
Brand: generic
Drive train type: 420
Number of teeth: 52
Material: aluminium
Colour: grey
Number of fixing holes: 6
Type of mounting holes: smooth
Dimensions of the rear pinion (see marks on the typical drawing)
A - Fixing center distance: 80 mm
B - Fixing center distance: 43 mm
C - Fixing center distance: 123 mm
D - Fixing center distance: 108 mm
E - Diameter of the mounting holes: 8 mm
F - Inner diameter of the crown: 105 mm
It is essential that you you check the type of drive train you need before ordering. On small motorcycles, most 50cc use the 420 (6mm width, 12.7mm pitch) but some 50s and most 125s use the 428 (7mm width, 12.7mm pitch) even for 125 in 520 (6mm width, 15.8mm pitch). All drive train parts, i.e. front sprocket, chain and rear sprocket, absolutely must be of the same type.
COMPATIBLE MODELS
Compatibility models for guidance, it is advisable to disassemble the part to be replaced beforehand and check the correspondence with pictures and dimensions indicated on the site.