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[k-kfarmer]

Finaly got my hdj81 from Japan it has a 3 inch lift with 285/16's onit and is a 5 speed is the trans an overdrive unit or is 5th direct why i ask is it rev's pretty high on the hwy like 2950 rpm for an indicated 120km/h aprox 125gps this is higher than i would like can i put a larger overdrive gear in the trans (between 3rd and 4th about 800 rpm drop and 4th to 5th about 200 rpm drop) or switch out the gear sets thanks Karl

 

[wussyPup]

Finaly got my hdj81 from Japan it has a 3 inch lift with 285/16's onit and is a 5 speed is the trans an overdrive unit or is 5th direct why i ask is it rev's pretty high on the hwy like 2950 rpm for an indicated 120km/h aprox 125gps this is higher than i would like can i put a larger overdrive gear in the trans (between 3rd and 4th about 800 rpm drop and 4th to 5th about 200 rpm drop) or switch out the gear sets thanks Karl

Welcome to the board - we need to see pictures! Where are you located?

There was a recent discussion about gear ratios a while ago; see post 2 at https://forum.ih8mud.com/showthread.php?t=106352

AllenTenT reported the same speed/RPM as you using the same sized tyres.

I haven't heard about larger OD gears; doesn't mean that they don't exist.