TeraFlex JK 4dr: 4” Coil Spring Base Lift Kit & 9550 VSS Twin-Tube

The TeraFlex JK 4dr: 4” Coil Spring Base Lift Kit includes just the basic lift components only and doesn’t have the drivability of a full suspension system.

Requires adjustable control arms and adjustable front track bar to correct suspension geometry. An adjustable rear track bar is recommended.



We recommend Falcon Performance Shocks or TeraFlex 9550 VSS Shocks.


These are the only shock absorbers engineered to work with TeraFlex lift coil springs to improve both compression and rebound for optimal vehicle stability.
Coil Spring Base Lift Kits are offered with TeraFlex 9550 VSS Twin-Tube Shocks or without shock absorbers.

Falcon Performance Shocks are available separately.






Specs:


• JK Wrangler Unlimited (4-Door)


• Lift Height: 4”

• Max Tire Diameter: 37”





Includes:


• 4” Lift Coil Springs (JK4 Front: # 1853402 & JK4 Rear: # 1854402)

• 0.5"" Lift Coil Spring Spacers (Front x 2: 1953100 & Rear x 2: # 1954105)

• Front Track Bar Bracket Gusset (# 4951800)

• Rear Track Bar Axle Bracket Kit (3-6” Lift) (# 1954777)

• 2.75"" Bump Stop Extension Kit – Front Upper (# 1953800)

• 1.25” SpeedBump Bump Stop Strike Pad Kit – Front Lower (# 1467125)

• 2"" Bump Stop Extension Kit – Rear Upper (4-6” Lift) (# 1954802)

• 0.75” SpeedBump Bump Stop Strike Pad Kit – Rear Lower (# 1954600)

• 10” Front Sway Bar Quick Disconnect Kit (3-4” Lift) (# 1753000)

• 12.25” Rear Sway Bar Link Kit (3-4” Lift) (# 1754500)

• 26” Front Brake Line Kit – Stainless Steel Braided (# 4353310)

• 30” Rear Brake Line Kit – Stainless Steel Braided (# 4350310)

• Front Brake Line Anchor Kit (# 1101255)

• Exhaust Spacer Kit (# 2610000)

• All necessary hardware

• And more

• 9550 VSS Twin-Tube Shock Kit (3-4” Lift) (# 1545200)






Note(s):


• Caster correction required – NOT INCLUDED.

• Requires aftermarket wheels w/ 4.75” backspacing or less – or Offset Wheel Adapters (# 1055000) for stock wheels – NOT INCLUDED.

• We highly recommend driveshaft modifications. See the TeraFlex Rzeppa High-Angle CV Kit (# 1744014).
• Requires alignment.

• Requires longer shocks (NOT INCLUDED in base kit) – we recommend Falcon Performance Shocks or TeraFlex 9550 VSS Twin-Tube Shocks (# 1545200).

Proper suspension geometry ensures all stability controls function w/in factory parameters. The following components are recommended to optimize caster and pinion angles and restore factory steering and suspension geometry: adjustable 8-Arm Short Control Arm Kit (Alpine: # 1415610 or Alpine IR: # 1415611), or adjustable 8-Arm Long Control Arm & Bracket Kit (Alpine: # 1315010 or Alpine IR: # 1315011), and/or HD Forged Adjustable Front Track Bar (# 1753418), and/or HD Forged Adjustable Rear Track Bar (# 1754418).



Install Time: 8 Hours





Configurations:


JK 2-Door:

4” Suspension System w/ 8 Alpine Short Control Arms

• w/ 9550 VSS Twin-Tube Shocks (# 1451403)

• No Shocks (# 1156403)



4” Coil Spring Base Lift Kit

• w/ 9550 VSS Twin-Tube Shocks (# 1251421)

• No Shocks (# 1151421)



JK 4-Door:

4” Suspension System w/ 8 Alpine Short Control Arms

• w/ 9550 VSS Twin-Tube Shocks (# 1451401)

• No Shocks (# 1156401)



4” Coil Spring Base Lift Kit

• w/ 9550 VSS Twin-Tube Shocks (# 1251401)

• No Shocks (# 1151401)