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Rock Hard 4x4 RH-90340, Installation Manual, Page: 5 / 9

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Rock Hard 4x4 RH-90340 Installation Manual Download Page 5

Customer Service / Tech Support: 

[email protected]

 

Thank you for your purchase! Please read all instructions carefully prior to 

beginning installation of your Rock Hard 4x4 product. 

3.

 

Replace left side (driver) bolt with special thin head bolt and 
nut. 12MM x 1.75 x 100mm. Head of bolt to rear of Jeep 
using 18mm wrench.

 

 

 
4.  Replace right side (passenger) bolt with 12mm x 1.75 x 

100mm. Head of bolt to rear of Jeep using 18mm wrench. 

 
5.  Install factory towing electrical plug (if equipped) into Rock 

Hard 4x4 rear bumper or block off plate (included with 
hardware kit) using 4x #10 x 24 x ¾” flange bolts and 4x 
#10 x 24 locking nuts using 3/8” and 5/16” wrenches. 

 

Summary of Contents for RH-90340

Page 1: ...rockhard4x4 com Thank you for your purchase Please read all instructions carefully prior to beginning installation of your Rock Hard 4x4 product ROCK HARD 4X4 JEEP WRANGLER JL 2 4 DOOR 2018 CURRENT ALUMINUM REAR BUMPER PART RH 90340 Installation Manual ...

Page 2: ...4 product PACKING LIST 2 x 3 FULL THREAD BOLTS 2 WASHERS 4 14 X 1 5 BOLTS 4 14MM WASHERS 1 12 X 1 75 X 100 BOLT 1 12 X 1 75 X 100 SPECIAL THIN HEAD BOLT 2 12 X 1 75 NUTS 2 5 8 THICK BLOCK 1 SPECIAL LABELED BLOCK 4 PLASTIC PLUGS IF SENSORS NOT INSTALLED 1 PACK SENSOR CLIPS 4 10 X 24 X WHIZ BOLTS 4 10 X 24 KEPS NUTS 1 BLOCK OFF PLATE 1 4 PIN ADAPTER PLATE REQUIRED TOOLS xx ...

Page 3: ... 4x4 team We outsource zero processes To you that means the product you are installing is the highest quality and longest lasting component on the market To us that means you ve selected a part we ve spent years developing Each Rock Hard 4x4 part has gone through more research and development and evolution than most people realize While our parts may have the same striking look year after year sub...

Page 4: ...y tow hooks remove using 21MM socket remove all hook bolts 16MM socket removes bumper nuts Remove rear bumper cross member bolts 1 per side using 16MM socket Remove bumper from frame 3 Remove backup sensors if equipped by prying connect then press clip towards wiring and remove sensor plug Once connectors are disconnected pop plastic fasteners out of bumper using flat blade screwdriver You ll reta...

Page 5: ...ecial thin head bolt and nut 12MM x 1 75 x 100mm Head of bolt to rear of Jeep using 18mm wrench 4 Replace right side passenger bolt with 12mm x 1 75 x 100mm Head of bolt to rear of Jeep using 18mm wrench 5 Install factory towing electrical plug if equipped into Rock Hard 4x4 rear bumper or block off plate included with hardware kit using 4x 10 x 24 x flange bolts and 4x 10 x 24 locking nuts using ...

Page 6: ...l sensor holders and clips into bumper and sensors with wiring if equipped Sensor plugs must point to center of bumper If no sensors install supplied plastic plugs into bumper Install factory license plate light with factory nuts Some JL sensors may require a simple splice extension there are 2 sensor harnesses part numbers each vary in length slightly Install factory license plate light with fact...

Page 7: ...n holes Not needed on driver side since factory nuts are in place from tow hook 4 Set top lip of bumper on frame Slide 2x 1 1 2 x 5 8 x 3 1 4 blocks with 2 holes between frame and lower lip of bumper Make sure wiring is between bumper and block and will not get pinched Use 2 factory bolts from tow hook on driver side Use 2 1 2 x 3 full thread bolts with 2x 1 2 SAE flat washers on passenger side 18...

Page 8: ...x4 product 5 Install 2x 14MM x 1 50 x 40MM bolts with flat washer from outside of frame onto each side 22MM socket with short extension Tighten all hardware CONGRATULATIONS Now go wheel your rig with a whole new level of confidence and capability Please send photos of your install and wheeling adventures to sales rockhard4x4 com We love seeing our products on the trail ...

Page 9: ...imited Warranty without prior notice or obligation to upgrade your product What is Not Covered Your Rock Hard 4x4 Limited Warranty does not cover products or parts Rock Hard 4x4 determines to have been damaged by or subjected to a Installation damage alteration modification combination with other parts failure to maintain or improper repair or service b normal wear tear cosmetic damage or damage f...

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