What have you guys with duals out the back done about the rear bumper rusting. I get rust spots just above where the exhaust exits.

Any ideas, other than wax the crap out of it. (That's what i currently do.)

 

What style truck is it? I`ve had mine replaced once under warr. And now the replacement is rusting too. So I`m having mine replated at cost of $250.00 with a lifetime warr. as long as I own my truck. I too have duals, this should not cause the rust in any case. It just cheap plating that not done right. Lariat#1

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1997 Red/Silver F150 Lariat Flareside 3 Dr. SC..... ORP & Tow Package, Complete Lariat Option Package ,{APPEARANCE} GTS Projector Beam /Carbon Fiber Headlite Covers,AVS Tail Lite Slots & Door Sill Protectors,Flareside tail lites wired to work upper&lower lenses together,Owens Fg. Step Boards, Tinted Windows,Ford 2-Piece Bra,Lighted Ford Logo in Grill,20" Chrome Exhaust Tips,A.R.E Bed Cover Lid,Pendaliner Inner Tail Gate Protector,Zie-Bart Total Paint & Under Coating W/ Sounder Deadener Protection, Lariat #1 Plate under glass on Front Bumper,Custom made Ford Red Window Decals,Blue Tinted Rear Lic. Plate Protector,Blue Billet Valve Stem Caps, Ford Lited Hitch Receiver Cover that works off brakes lites, HD Bed Mat, Red reflectors above Rear Bumper {PERFORMANCE} 4.6L WINDSOR Auto, 3.55LS, 4-Wheel ABS,Platinum 3 Spark Plugs,K&N Air Filter W/ modified stock MAF side air box,Outerwears Blue Pre-Filter Cover,Tornado Air Man.,Perma-Cool Oil Filter Relocation Kit,Motorcraft Racing Oil Filter FL-1HP,Dual Exhaust System W/Stock Muffler,NAPA Ceramix Carbon Ceramic Premuim Brake Pads(Front),Goodyear Wrangler A/TS Tires,55 Watt Halogen(replacement) Reverse Lites, Pilot 55 watt Halogen (add-on) Reverse Lites on Hitch under truck,Driving Lamps upgraded to 55 Watt Cool Blue Halogen Bulbs,Pilot Bright Whites headlite bulb replacements 65/55 watts,Driving Lamps(Foglites) work W/ High Beams On & Driving Lamps(Foglites) also work (ON or OFF) W/ Park Lamps On W/Switched Relay, A.R.E Cover wired W/interior(dome) light wired to a mounted door jam switch thats wired to hood light,SurgeGuard by Calterm {AUDIO} Stock In-Dash Cass. W/6 Disc Changer & 2 Stock Speakers(back) & 2 Pioneer TS-A6865 3- Ways(front),Black felted inner front door speaker openings , all speakers dynomat lined,Trenz Billet #3 Antenna {SECURITY} Ford Total Security System W/ Motion Alarm All on factory Key Fob,Ford Warning Decals on Windows,A.R.E Cover & Hood also wired to Alarm System, Hitch Pin locking system This is LARIAT#1..... IN The Great State Of Indiana "Where more than corn grows in Indiana".........http://hometown.aol.com/terrylariat1...page/auto.html A Very Proud Member of ...www.f150online.com

Soon the have rear step Bumper Re-Plated Triple Plated Chrome

 

The bumper on my '98 rusted too. Just little spots on the bottom of each side, and quite a bit on the backside. I went to the dealer a few times about it, and they kept polishing it using chrome polish. That did a great job of getting rid of the rust, for a while. I eventually had the bumper replaced under warranty. This new bumper is black on the back (paint?/rustproofing?), and hasn't rusted yet. I think it's been about 6 months now.

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1998 F-150 XLT 4x4 SC/SB 4.6L, Auto., 3.55LS, TTP, blah, blah, blah
All the info is at http://www.fordf150.net