The 850 Le Mans I/II etc. may be fitted with a new set of straight-toothed gears and mainshaft to give different gearbox ratios. These are non-standard racing parts and may violate type approval specifications. Kit 'A': Straight-toothed close-ratio cluster (1st & 2nd high) Moto Guzzi part No. = 14 21 00 41 with mainshaft 14 21 05 40

Clutch transmission gear: Ratio: Main shaft: with final drive = Z 7/33 or 1:4.714 (standard):

With Primary Drive
Z 17 ('normal') Z = 17/22 or 1:1.294 (standard = 17/21 or 1:1.235) Z = 24 - 22 - 20 - 17
Overall Gear Ratios vs Road Speed mph @ engine rpm
rpm:	1000	2000	3000	4000	5000	6000	7500	Ratio:
1st 2nd 3rd 4th 5th	7.99 10.18 12.22 14.68 16.09	15.98 20.37 24.45 29.36 32.18	23.98 30.55 36.67 44.03 48.27	31.97 40.74 48.89 58.71 64.36	39.96 50.92 61.12 73.39 80.45	47.95 61.11 73.34 88.07 96.54	59.94 76.39 91.68 110.08 120.68	9.329:1 7.321:1 6.1:1 5.03:1 4.634:1

Kit 'B': Straight-toothed close-ratio cluster (1st & 2nd low) Moto Guzzi part No. = 14 21 11 41 with mainshaft 14 21 05 41

with final drive = Z 7/33 or 1:4.714 (standard)

Overall Gear Ratios vs Road Speed mph @ engine rpm
and Main shaft:				Z = 24 - 22 - 19C - 16C
rpm:	1000	2000	3000	4000	5000	6000	7500	Ratio:
1st 2nd 3rd 4th 5th	7.52 9.68 12.22 14.68 16.09	15.04 19.36 24.45 29.36 32.18	22.56 29.04 36.67 44.03 48.27	30.08 38.72 48.89 58.71 64.36	37.61 48.4 61.12 73.39 80.45	45.13 58.08 73.34 88.07 96.54	56.41 72.59 91.68 110.08 120.68	9.914:1 7.703:1 6.10:1 5.08:1 4.634:1

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