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Front Sprocket Sleeve To Convert 3 Speed J + Luna Line Lambrettas to 4 or 5 speed

X813 E3

£35.00 inc. tax

Front Sprocket Sleeve To Convert 3 Speed J + Luna Line Lambrettas to 4 or 5 speed Summary

Special front sprocket sleeve to convert 3 speed J Range + Luna Line Lambretta models (Lui 50 + J50 + Cento + J125) to 4 or Vega5 5-speed!

This sleeve is a different height to the similar sleeve M350. The reason for this is that this sleeve is needed if you intend to take an engine casing that was originally 3-speed, and then convert it to 4 or 5 speed. This special sleeve enables you to get the right chain alignment height between the front sprocket and the clutch crownwheel bell.
This is the complete list of all possible front drive sprocket & clutch crownwheel sprocket combinations for all J-Range and Lui-Vega-Cometa models, complete with the required length chain

45T Clutch Crownwheel Sprocket
45T clutch sprocket + 11T front sprocket = 73 link chain
45T clutch sprocket + 12T front sprocket = NO!
45T clutch sprocket + 13T front sprocket = 74 link chain
45T clutch sprocket + 14T front sprocket = 74 link chain
45T clutch sprocket + 15T front sprocket = 75 link chain
45T clutch sprocket + 16T front sprocket = 75 link chain

46T Clutch crownwheel sprocket
46T clutch sprocket + 11T front sprocket = NO!
45T clutch sprocket + 12T front sprocket = 74 link chain
46T clutch sprocket + 13T front sprocket = stretched 74 link chain
46T clutch sprocket + 14T front sprocket = 75 link chain
46T clutch sprocket + 15T front sprocket = 75 link chain
46T clutch sprocket + 16T front sprocket = 76 link chain

47T Clutch crownwheel sprocket
47T clutch sprocket + 11T front sprocket = 74 link chain
47T clutch sprocket + 12T front sprocket = stretched 74 link chain
47T clutch sprocket + 13T front sprocket = 75 link chain
47T clutch sprocket + 14T front sprocket = NO!
47T clutch sprocket + 15T front sprocket = NO!
47T clutch sprocket + 16T front sprocket = 76 link chain