I saw this listed in the Specialized part Number Repository:

Part # : MD705462 - Gear, Speedometer Drive (N=22): For 4.625 gearing and 33" tires
Other parts to go with that assembly:
MF472536 - Spring Pin, Speedometer Drive Gear (3x16mm)
MD701788 - O-ring, Speedometer Drive Gear (10.3mm)
MF520403 - O-ring, Speedometer Drive Gear Casing (35mm)

What I can't figure out (my truck isn't near me right this second) is if my truck has the 4.625 gears to be able to use this, and if I need the other parts to go with it.
Would be a nice cheap $20 fix to make my speedo accurate, as I have 33 x 12.50s.

My truck is an 85 SWB 2.6L / 5-Speed.

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TripleJack

85 GenI SWB 2.5/5-Speed on 33s

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