I'm contemplating taking off my rock rails due to rust spots. Not sure if it would look better without them. I was also thinking of taking off the skid plates. My question is by removing all these parts, would a significant weight be taken off the vehicle and would it make any difference in gas mileage? I don't do any off roading so it wouldn't hurt me doing this.

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2005 Jeep Liberty Renegade 4X4 - Auto - Off Road Package
Pennzoil Platinum Synthetic Motor Oil
General Grabber HTS 235/70/16
Flowmaster Series 40 Delta Flow Exhaust cat-back system
K&N 63 Series Aircharger Intake Kit
Bosch Platinum Ir Fusion Spark Plugs
Hella 500FF Free-Form Fog Lamp Kit
Sony Xplod CDX-GT620IP Head Unit w/Sony Xplod Speakers

For what the stock skid plates weigh its not going to make that much difference really. Plus the next time you see something in your lane and you have to run over it , you'll be glad the skids are on there

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MUDD'S MOTORSPORT'S We do IFS lift installs ,
03 OVERLAND EDITION /Kilby-Skidrow-Mopar-4XGuard skids/ 2.5 inch TOTAL CONTROL JBA coilovers -JBA Arms/MOABS-31 FALKEN WILDPEAK AT3W / 4.10's etc, 04 Kilimanjaro Edition loaded, plus 05 KJ limited

Actually the skids kinda help smooth out the undercarriage for better aerodynamics.

If we're talking the Mopar rails, they don't weigh much I don't think. Leave 'em.

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05 KJ Limited 4x4 in Light Khaki: Detours USA Backbone, Warn M8000, Huskyliners, RockLizard Super Skink sliders, OME/Bilstein Lift, JBA UCA's, 245/70/17 Nitto Terra Grapplers
07 LR3 SE V8
1996 XJ Country
2015 KL Limited

They do not weigh much and they are cheap insurance. From personal experience, they are worth every dollar I paid for them. Sometimes you cannot lane change your way out of trouble.

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2006 KJ Sport, Dark Khaki, 3.7 Litre
NSG370 6 Speed Manual Transmission | NP241J Command Trac HD Part Time 4wd | 3.55s | 245/70R16 Firestone Destination A/Ts | Mopar Tow Hooks & Skids | Powerslot Brake Rotors | ARB Rear Differential Cover

Thanks for the tips guys!

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2005 Jeep Liberty Renegade 4X4 - Auto - Off Road Package
Pennzoil Platinum Synthetic Motor Oil
General Grabber HTS 235/70/16
Flowmaster Series 40 Delta Flow Exhaust cat-back system
K&N 63 Series Aircharger Intake Kit
Bosch Platinum Ir Fusion Spark Plugs
Hella 500FF Free-Form Fog Lamp Kit
Sony Xplod CDX-GT620IP Head Unit w/Sony Xplod Speakers