RK 4.5" X-Factor "No Limits" Mid-Arm System
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
Description
Description
The Rock Krawler Suspension JT 4.5 inch X-Factor "No-Limits" Mid-Arm System is specifically designed for Rubicon owners who want a complete system, bolt-in installation, and the best articulation of any MID-ARM kit on the market. Our system proves its durability and off-road performance every time you hit the streets or trail! "No-Limits" comes from the inclusion of our front sway bar links specifically designed for use with the factory electronic sway bar disconnect feature found standard in your Rubicon Gladiator! The sway bar links themselves come with factory sized hardware, a CNC machined billet aluminum center section, and Made in USA heim joints from FK bearing, once installed, just press the button and hit the rocks! Our industry leading, X-Factor Series, adjustable upper and lower control arms offer a total of 95 degrees of misalignment when paired with our Pro-X Krawler Joints and Adventure Series joints. The inherent bind in a factory JL/JT control arm is greatly reduced.
Our maintenance free "Adventure Series" joints are found in your front and rear control arms at the frame connection, while our "PRO Krawler Joints" tie in your axle connections. With so much adjustability, it allows you to precision tune the JT's caster and pinion angle front and rear. Driving you home with the most comfortable ride possible in a Wrangler, are our TRIPLE RATE front coils/QUAD RATE rear coils. All 4 coils work together to achieve excellent on-road comfort that we feel is better than the OEM linear rate springs. The coil itself is built with the proper "Free-length" for off-road articulation and stays firmly seated in the coil bucket (as long as a proper length shock is installed), and overall a very controlled reaction to bumps, rocks, sand, mud and whatever else you can manage to throw at them! All Rock Krawler JL systems include correction pads that reduce the spring bow inherent in the factory set up. The provided track bar geometry corrections, both front and rear, lets you perfectly center the axles so there is no compromise in on road handling.
Features & Benefits:
- Complete bolt in system
- Excellent highway ride and handling
- The best off-road ability of all Mid Arm Systems
- Improved rear roll center
- Tuned Triple Rate Coils
- Spring Correction Seats
- Vehicle lean correction
- Upgradable to RK Longarm System
- Best Technical support in the industry
- Jeep remains level on all 4 corners
- Lifetime Warranty
Kit Includes:
- (4) Triple/ Rear Quad rate coil springs
- (2) Front lower control arms
- (2) Front adjustable upper control arms
- (2) Front spring pads
- (1) Adjustable front track bar
- (2) No Limits sway bar links
- (2) Rear lower control arms
- (2) Rear adjustable upper control arms
- (2) Rear spring pads
- (2) Adjustable rear sway bar links
- (1) Bolt-on rear track bar relocation bracket
- Carrier Bearing Drop Bracket
- Extended rear brake lines
-
(*DEPENDING ON SHOCK PACKAGE CHOSEN*)
- Bumpstops are included with all shock options
- IF YOU CHOOSE NO SHOCKS - BUMPSTOPS CAN BE PURCHASED SEPARATELY - RK07880
- Twin Tube Shocks / 2.25"RRD shocks
Shock Information:
-
Generic Front Shock Length – 18.31” Collapsed/ 30.31” Maximum Extended
- Generic Rear Shock Length – 19” Collapsed/ 31” Maximum Extended
Bilstein Shocks:
- FRONT: RRD04056-B51
- REAR: RRD04059-B51
- requires 3" bump stops both front and rear
RRD Spec'd 2.25" Shocks: IN-HOUSE Designed and built - 2.25" Fluted aluminum construction, hard coat military grade black anodizing, 7/8" shaft, IFP (Internal floating piston), better bushings to achieve better misalignment, fully serviceable and rebuildable
- RRD Spec Front Shock
- Part Number RRD02287
- RRD Spec Rear Shock
- Part Number RRD02397
- FULL PACKAGE = RRD02401
- requires 3" bump stops both front and rear
Remote Reservoir 2.625" Coilover Shocks: Remote reservoir standard, IFP construction, MASSIVE 2.625" shock bodies, fluted aluminum bodies, 1" shaft, 1.25" mounting width, hard coat military grade black anodizing, fully serviceable and rebuildable.
- RRD Spec Front Remote Reservoir Coilover
- Part Number RRD07868RR
- RRD Spec Remote Reservoir (NON-Coilover) Rear Shock
- Part Number RRD07870RR
Notes:
- All lift heights based on Rubicon models for standard style build (i.e. front bumper and winch, rear bumper and full size spare).
- If building with a spare delete we recommend dropping 1” in coil lift height for the rear.
- If building an "overland style" or heavily up-fitted build in the back, we recommend upsizing 1” in coil lift height for the rear.
- We recommend a new front driveshaft if you plan to off-road routinely.(Adam's Drivesahft,Tom Woods,J.E. Reel)
- Requires removal of the OEM shock mount off the frame (*If coilover system is purchased)
- Requires removal of the OEM shock and spring mount off the axle (*If coilover system is purchased)
- Requires welding of the new coil over mount on the axle only (*If coilover system is purchased)
RK 4.5" X-Factor "No Limits" Mid-Arm System | SKU: JT54NL
