gear ratio change 4.56 or 4.88 for 37s
#14
I installed the 4.88 in mine with 40" Toyo MT's. My MPG went up 25%. Went from 8MPG to 10MPG. I changed the gears after I rebuilt my transmission after the previous factory rebuilt transmission only lasted 30,000 miles because it would have a hard time staying in 4th gear due to big tires and stock gears. Changing the gears will pay for themselves in the long run. I should have installed a front locker at the same time.
#17
Is this the right parts list we need for upgrading the gears? I'm going to buy all this and find a local shop....
Genuine Gear G2 Hummer H2 Ring & Pinion 4.88 - Rear
https://www.trailduty.com/product_in...roducts_id=690
Genuine Gear G2 Hummer H2 Ring & Pinion 4.88 - Front
https://www.trailduty.com/product_in...roducts_id=694
Genuine Gear G2 Hummer H2 Master Install Kit - Rear
https://www.trailduty.com/product_in...roducts_id=695
Genuine Gear G2 Hummer H2 Master Install Kit - Front
https://www.trailduty.com/product_in...roducts_id=691
Genuine Gear G2 Hummer H2 Ring & Pinion 4.88 - Rear
https://www.trailduty.com/product_in...roducts_id=690
Genuine Gear G2 Hummer H2 Ring & Pinion 4.88 - Front
https://www.trailduty.com/product_in...roducts_id=694
Genuine Gear G2 Hummer H2 Master Install Kit - Rear
https://www.trailduty.com/product_in...roducts_id=695
Genuine Gear G2 Hummer H2 Master Install Kit - Front
https://www.trailduty.com/product_in...roducts_id=691
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