ratio on this unit is 2-1
Includes smaller Metzeler booklet and decal
should fit all Norton 850 MK3 with electric start
Fit and function are splendid
Moto Guzzi Trans Driveshaft COUPLER 1232-7700 MANY Big Twin Models Everything Else ratio on this unit isUsed on big twin models with 10 spline driveshaft and 10 spline rear pinion, 5 speed transmission. See below. V700, Ambassador, Eldorado, V750 Special, 850 GT, V7 Sport, 750S, S3, California II except automatic trasmission version, California III except full fairing version with sidecar gearing, California 1100, 850T, 850T3, T4, T5, G5, 850 LeMans, LeMans II, LeMans III, LeMans 1000 all years LeMans IV and LeMans V, CX100, 1000S, 1000 SP, SP II, SP