4th and 5th gear set for 901 gearbox
- Can be used for 4th and 5th gear
Fits:Porsche 911 - 1965 to 1971
For 901 gearbox
Available with different gear ratios - example - 31:22 (number of teeth on each gear) - 0.71:1 (gear ratio)
31:22 - 0.71:1 (Porsche code "ZD")
29:22 - 0.76:1 (Porsche code "ZA")
29:23 - 0.79:1 (Porsche code "Z")
28:23 - 0.82:1 (Porsche code "Y")
28:24 - 0.86:1 (Porsche code "X")
27:24 - 0.89:1 (Porsche code "W")
27:25 - 0.93:1 (Porsche code "V")
26:25 - 0.96:1 (Porsche code "U")
26:26 - 1.00:1 (Porsche code "T")
25:26 - 1.04:1 (Porsche code "S")
25:27 - 1.08:1 (Porsche code "R")
24:27 - 1.13:1 (Porsche code "Q")
23:27 - 1.17:1 (Porsche code "P")
23:28 - 1.22:1 (Porsche code "O")
23:29 - 1.26:1 (Porsche code "N")
22:29 - 1.32:1 (Porsche code "M")
22:30 - 1.36:1
Diagram ref no 4 and 5
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