phone: 5182709822

LEAD TIMES:  Basic part orders 5-10 Business Days. Complete Short Arm/Mid Arm Systems 2-4 Weeks. Coil Over or Standard Long Arm Systems 3-5 Weeks.  Customized Orders 6-8 Weeks. (This is to Ship from Time of Order)

JL 3.5 Inch T-Rex Long Arm System - TT

Write a Review

The Rock Krawler JL 3.5 T-Rex Systems are for those JL 2 Door Owners looking to get the best off road ability without modifying the fuel system. It features a X Factor mid arm front suspension system combined with a X Factor long arm rear system. The rear system provides the tried and true independent 3 link conversion with X2 rear suspension geometry. New high clearance axle mounts provide 3.5 inches of ground clearance under the rear axle as compared to stock. Rear upper shock relocation brackets ensure you do not lose any shock travel. The combination of high clearance mid arm front suspension and high clearance rear long arm suspension makes your 2 Door JL tough to beat on the trails. And if the day ever comes where you want to modify the fuel system and go full long arm suspension, you have that option.

System Benefits:

  • Excellent Highway Ride
  • Improved Off-Road Ability
  • RRD Twin Tube Shocks Front & Rear
  • Triple Rate Coil Springs
  • Front & Rear Spring Leveling Pads
  • Lifetime Warranty on All Hard Parts
  • Upgradeable to Rock Krawler Full JL Long Arm
  • Jeep remains level on all 4 corners

System Includes:

  • (1) Adjustable front Anti-wobble trac bar
  • (4) RRD Twin Tube shocks
  • (2) X Factor adjustable front lower mid arms
  • (2) Adjustable front upper mid arms
  • (1) Front sway bar disconnect kit
  • (4) Triple rate coil springs (front & rear)
  • (4) Spring correction seats
  • (2) Weld-on frame side rear long arm mounts
  • (2) X Factor adjustable rear long arms
  • (1) Rear upper frame mount
  • (1) Adjustable rear upper control arm
  • (2) Rear extended sway bar links
  • (1) Adjustable rear track bar
  • (2) Rear upper shock mount
  • (2) Weld-on rear axle side control arm mount
  • (1) Weld-on rear track bar mount
  • (1) Weld-on rear truss
  • (2) Rear brake line relocation bracket

Tire Fitment:
Sport and Sahara with Full OEM Fenders
37” Tall Tires (3” Bump Stop Height Recommended)
Sport and Sahara with Trimmed or High Lined OEM Fenders
38” Tall Tires (3” Bump Stop Height Recommended)
Rubicon with Full OEM Fenders
37”/38” Tall Tires (3” Bump Stop Height Recommended)
Rubicon with Trimmed or High Lined OEM Fenders
40” Tall Tires (3” Bump Stop Height Recommended)

Wheel Fitment:
Sport and Sahara Wheel Fitment Recommendations
37”/38” Tall Tires - Recommend 3.5” of Back Spacing
Rubicon Fitment Recommendations
35" Tall Tires - Recommend 4.5" of Back Spacing
37” Tall Tires - Recommend 4.5” of Back Spacing
40” Tall Tires - Recommend 3.5” of Back Spacing

Shock Notes:
Generic Front Shock Length - 17” Collapsed/ 29.5” Maximum Extended
Generic Rear Shock Length - 18” Collapsed/ 30.5” Maximum Extended

General Notes:

*All lift heights based on Sport Models For 2 Doors

*XR Package does not require OUR raised rear track bar bracket, the factory axle has a raised rear trackbar, and for OUR systems that do not have a rear trackbar one must be added.

*If building with a spare delete, we recommend dropping 1” in coil lift height for the rear.

*If building an overland or heavily upfitted build in the back, we recommend upsizing 1” in coil lift height for the rear.

*Requires aftermarket fuel tank or relocation of factory fuel tank.

*Recommend a new front C.V. driveshaft for all front shocks with max. extended length greater than 29in

*Requires welding of the Rear Long Arm Mounts

*Requires removal of the OEM frame rear control arm mounts

*Requires removal of the OEM axle side rear lower control arm and track bar mounts

*Requires modifying the OEM rear shock mounts and welding of the raised rear upper shock mounts

*Recommend installing limiting straps to avoid over extension of suspension components after vehicle is all set up