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Courtney B.
Will this work with stock wheels and a 37x11.50 tire?
No, this setup will not work with stock wheels without modifications.
According to American Expedition Vehicles (AEV), running a 37-inch tire with the AEV Spacer Lift for 2018+ JL Wrangler has specific clearance requirements:
Wheel Spacers or Aftermarket Wheels Required: Factory JL wheels do not have the proper backspacing to clear a tire this wide (11.50 inches or wider) without rubbing against the control arms or suspension components at full turn. You will need to add wheel spacers or switch to aftermarket wheels with proper backspacing.
Rubicon vs. Sport/Sahara: While the AEV Spacer Lift for 2018+ JL Wrangler officially accommodates up to a 37x12.50R17 tire on Rubicon models (and 35s on Sport/Sahara), the factory wheel offset constraint still applies.
Trimming: Minor plastic trimming around the inner fender liners may also be necessary depending on your exact wheel specs and articulation.
According to American Expedition Vehicles (AEV), running a 37-inch tire with the AEV Spacer Lift for 2018+ JL Wrangler has specific clearance requirements:
Wheel Spacers or Aftermarket Wheels Required: Factory JL wheels do not have the proper backspacing to clear a tire this wide (11.50 inches or wider) without rubbing against the control arms or suspension components at full turn. You will need to add wheel spacers or switch to aftermarket wheels with proper backspacing.
Rubicon vs. Sport/Sahara: While the AEV Spacer Lift for 2018+ JL Wrangler officially accommodates up to a 37x12.50R17 tire on Rubicon models (and 35s on Sport/Sahara), the factory wheel offset constraint still applies.
Trimming: Minor plastic trimming around the inner fender liners may also be necessary depending on your exact wheel specs and articulation.
Kevin I.
Will this work on a 2021 jeep rubicon xtreme recon package so i could put 37 on any other parts needed as the recon is already lifted
No, this kit explicitly excludes Xtreme Recon models.
Because the Xtreme Recon package already comes with a factory suspension lift from Mopar, adding this 2-inch spacer kit on top of it can over-extend components, alter factory suspension geometry incorrectly, and cause clearance or handling issues.
Because the Xtreme Recon package already comes with a factory suspension lift from Mopar, adding this 2-inch spacer kit on top of it can over-extend components, alter factory suspension geometry incorrectly, and cause clearance or handling issues.
Jim G.
I have a 2025 Jeep Rubicon JL Unlimited with the factory "Performance Suspension".
Will this kit add 2" to the factory lift height that the Performance Suspension provides?
Is this kit fully compatible with my Method wheels (17x8.5 - 5x127 mm (5x5 in) / Offset = 0 mm / Backspace = 4.80 in and my BF Goodrich K02's 315/70R17?
Can I fit 37’s without modifications with this setup?
Do I need to install the provided AEV's ProCal SNAP module if I plan on installing the Z Automotive Tazer JL Mini in the future?
Lift Height: Yes, it adds a true 2 inches over your factory setup. If your factory "Performance Suspension" sits slightly higher or different than a base model, the spacers add their full height on top of whatever baseline stance you currently have.
Wheel & Tire Compatibility: Yes, your Method wheels (17x8.5, 0mm offset, 4.80" backspace) and BFGoodrich KO2 315/70R17 (35s) are fully compatible with this kit. The 0mm offset and 4.80" backspace provide the proper clearance required by AEV.
Fitting 37s: On a Rubicon JL Unlimited, you can physically fit 37x12.50R17 tires with this kit, but you may experience rubbing at full steering lock or full suspension compression depending on your exact wheel off-road articulation. AEV officially recommends 35s for the best clearance without modification, though many run 37s on Rubicons with this lift. A suspension lift kit as well as appropriately backspaced wheels are recommended for tire sizes over 35" to clear the frame and suspension components.
ProCal SNAP vs. Tazer JL Mini: No, you do not need to install the AEV ProCal SNAP if you plan to use the Z Automotive Tazer JL Mini. Both devices perform speedometer recalibration, tire size programming, and TPMS adjustments by plugging into the OBD2 port. Using both simultaneously will cause a software conflict, so you should choose one or the other.
Wheel & Tire Compatibility: Yes, your Method wheels (17x8.5, 0mm offset, 4.80" backspace) and BFGoodrich KO2 315/70R17 (35s) are fully compatible with this kit. The 0mm offset and 4.80" backspace provide the proper clearance required by AEV.
Fitting 37s: On a Rubicon JL Unlimited, you can physically fit 37x12.50R17 tires with this kit, but you may experience rubbing at full steering lock or full suspension compression depending on your exact wheel off-road articulation. AEV officially recommends 35s for the best clearance without modification, though many run 37s on Rubicons with this lift. A suspension lift kit as well as appropriately backspaced wheels are recommended for tire sizes over 35" to clear the frame and suspension components.
ProCal SNAP vs. Tazer JL Mini: No, you do not need to install the AEV ProCal SNAP if you plan to use the Z Automotive Tazer JL Mini. Both devices perform speedometer recalibration, tire size programming, and TPMS adjustments by plugging into the OBD2 port. Using both simultaneously will cause a software conflict, so you should choose one or the other.
Philip G.
Will this work on a 392 to run 37's without needing additional drive shaft mods?
Yes, the AEV N0721000AE 2-inch Spacer Suspension System will work on your Wrangler 392 to run 37-inch tires, and it is widely considered the "sweet spot" for a 392 owner who wants to keep the factory-tuned suspension while moving up in tire size.
Because the 392 already sits about 1 inch higher than a standard Rubicon from the factory, this 2-inch spacer kit will put you at a total height that comfortably clears 37s for daily driving and moderate trail use.
Some Notes:
--Standard 392: This kit provides the necessary clearance to run 37s. However, for full off-road articulation (flex), you should ensure you use the bump stop extensions included in the kit to prevent the tires from hitting the painted fender flares.
--392 Xtreme Recon (XR): If your 392 is an XR model, it already has the wider fender flares and slightly taller bump stops, making 37s an even easier fit with this spacer kit.
--This kit includes the ProCal SNAP module. It is vital that you use this to recalibrate your speedometer and shift points. Because the 392 has so much torque and a specifically tuned 8-speed transmission, keeping the computer synced to the actual tire size is crucial for transmission health.
--Shock Extensions: You will use the shock extension brackets included in the kit. This is a major benefit because it allows you to keep the factory-tuned FOX shocks that were specially valved for the weight of the 6.4L V8 engine.
--Wheel Backspacing: To avoid rubbing the frame at full steering lock, you will ideally want wheels with approximately 4.5" to 4.75" of backspacing. If you keep the factory 392 wheels, you may experience very slight rubbing on the front control arms when turning the wheel all the way to the left or right.If you do not want to change the wheels, you will need a wheel spacer.
Because the 392 already sits about 1 inch higher than a standard Rubicon from the factory, this 2-inch spacer kit will put you at a total height that comfortably clears 37s for daily driving and moderate trail use.
Some Notes:
--Standard 392: This kit provides the necessary clearance to run 37s. However, for full off-road articulation (flex), you should ensure you use the bump stop extensions included in the kit to prevent the tires from hitting the painted fender flares.
--392 Xtreme Recon (XR): If your 392 is an XR model, it already has the wider fender flares and slightly taller bump stops, making 37s an even easier fit with this spacer kit.
--This kit includes the ProCal SNAP module. It is vital that you use this to recalibrate your speedometer and shift points. Because the 392 has so much torque and a specifically tuned 8-speed transmission, keeping the computer synced to the actual tire size is crucial for transmission health.
--Shock Extensions: You will use the shock extension brackets included in the kit. This is a major benefit because it allows you to keep the factory-tuned FOX shocks that were specially valved for the weight of the 6.4L V8 engine.
--Wheel Backspacing: To avoid rubbing the frame at full steering lock, you will ideally want wheels with approximately 4.5" to 4.75" of backspacing. If you keep the factory 392 wheels, you may experience very slight rubbing on the front control arms when turning the wheel all the way to the left or right.If you do not want to change the wheels, you will need a wheel spacer.
Craig S.
Will this fit a 21 Rubicon 4xe?
Yes, this can be used with a 4xe.
James E.
What is the actual height of the front and rear spacers?
2" front and rear. Thank you for the question.
Gerald O.
What tire and rim size was used on that Sahara?
35" BFG Tires on a 17x9 Baja Xtreme II Alloy wheel with 4.75" of backspace. Thanks for your inquiry.
Davi V.
Will I gain any ground clearance with this lift or will it just raise the body?
Yes, you will get 2" of clearance, it is lifting the body and frame above the spring.
Darren G.
Will the sway bar disconnect still work the same with the Rubicon models?
Yes that feature will work with this lift kit. .
Azizi R.
ProCal Snap compatible with Right Hand drive models?
Yes, it is.