I know we're suppose to match gear ratios front and rear, but I'm interested in purchasing Jeepin by Al's front steel diff. Since I have 4.10 installed now I was hoping I could get the same setup for the front, but JBA only has 4.11 gearing in the front. Does the .01 make a difference?

I'd love to go with lower gearing all around and the steel diff, but I don't have $3K or more to burn right now.

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2005 Wrangler Rubicon
4.6L Stroker Engine, Flex-A-Lite radiator & electric fan, 4.5" BDS Short Arm lift, 33x12.5/16 Mickey Thompsons, Bestop TrailMax Pro 2 interior, Bestop NX soft top, Bushwacker 6" flares, and much more

**Prior Jeeps**
Wranglers 1989, 1998, 2005
Liberty 2003 & 2004 Renegade

Your actual front diff gears(the ones in the D30A) are 4.09's,not 4.10's.

There is no such thing as a 4.11 gear set for a D30.

The difference between 4.09 and 4.11 is very small, you wont notice the difference.

Tire diameter differences between your front and back tires is probably more.

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2005 CRD "Ol' Blue"
Red Ryder carbine-action, two hundred shot range model air rifle with a compass in the stock and this thing which tells time.
My build page- RL Komodo Rear and TJM Front Bumper, armored, lifted, JBA Steel D30, 4.10s and ARB air lockers.

Eggzachery. Factory 4.27/4.30 combo's were used in many apps and are well within acceptable standards. Go for it...

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LOST # 633
'05 KJ 3.7L/6spd/241 245/75/16 MT's
'88 MJ 4.0L/AW4/231 SWB HPD30 & trac-loc D44 w/3.73's
A dirty Jeep is a happy Jeep

I have 4.09's in the front with a diff pulled from a 4 cylinder and Yukon 4.11's in the rear. Has been like that for many years and works perfectly.

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June 2001 Liberty Limited 4X4
Frankenlift II Premium, Al's Upper Arms, 245/75R16 C Silent Armors on Moabs, RL Skink Super Sliders, Rear DTT, Riddler Diff Cover, Fastman Throttle Body, Profinish-Proglass Hood, Borla Dual Outlet Exhaust, TransGo Reprogramming Kit, APS Stall Converter, 4.10 Gears, B&G Chrysler PCM, Lots of Line-X, etc...

Excellent. Thanks for all the information everyone. Now I've just got to wrangle up the money for the steel diff.

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2005 Wrangler Rubicon
4.6L Stroker Engine, Flex-A-Lite radiator & electric fan, 4.5" BDS Short Arm lift, 33x12.5/16 Mickey Thompsons, Bestop TrailMax Pro 2 interior, Bestop NX soft top, Bushwacker 6" flares, and much more

**Prior Jeeps**
Wranglers 1989, 1998, 2005
Liberty 2003 & 2004 Renegade

No 4.11's for the 8.25 either.

Sorry, you're right. They are model YG C8.25-411, but they are actually 4.10's.

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June 2001 Liberty Limited 4X4
Frankenlift II Premium, Al's Upper Arms, 245/75R16 C Silent Armors on Moabs, RL Skink Super Sliders, Rear DTT, Riddler Diff Cover, Fastman Throttle Body, Profinish-Proglass Hood, Borla Dual Outlet Exhaust, TransGo Reprogramming Kit, APS Stall Converter, 4.10 Gears, B&G Chrysler PCM, Lots of Line-X, etc...