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Jeep JK 2 Door 4 Inch Prerunner Long Flexarm Suspension System 07-18 Wrangler JK TeraFlex

SKU 1145042
Original price $ 4,319.99 - Original price $ 4,319.99
Original price
$ 4,319.99
$ 4,319.99 - $ 4,319.99
Current price $ 4,319.99

The TeraFlex Prerunner Long Flexarm Suspension System begins where the Alpine CT4 Suspension System ends. The 4 Inch Prerunner kit builds on the 4 inch Alpine CT4 kit by adding all the components needed for a purpose-built speed system including extensive gusseting and brackets, heavy-duty suspension limit straps, and SpeedBump bump stops tuned for high-speed travel.

Engineered to handle high-speed off-road excursions, the 4 inch Prerunner Long Flexarm Suspension System is dependable and maintenance-free kit. With its focus on the speed aspect of off-road performance, the Prerunner kit features fully adjustable Alpine long flexarms to maximize wheel travel. Although we recommend 35 inch tires to reduce unnecessary rotational mass for quicker acceleration, the 4 inch lift height will accommodate up to 37 inch tires.

Suspension limit straps and SpeedBump bump stops maximize down travel safety to prevent any potential damage to drivetrain of suspension. In addition to reducing vibration and harshness, the additional gussets and reinforced bracketry beefs up areas prone to damage from high-speed off-road driving.

Falcon shocks and TeraFlex coil springs have been designed to work together to improve both compression and rebound for optimal vehicle stability. Does Not include shocks.

  • JK 2-Door 4 Inch Prerunner Long Flexarm Suspension System
  • Designed for wide-open inspired driving
  • Designed for OEM or Tera44 axle housings
  • HD limit straps prevent suspension damage
  • Extensive gusseting and brackets beef up critically weak areas and prevent damage
  • SpeedBump bump stops provide progressive compression during high-speed suspension movement
  • Coil spring retainers prevent the springs from unseating during full suspension extension
  • Alignment required
  • TeraFlex Lifetime Warranty
  • Fits up to 37 inch tires
  • Black Powdercoat Finish
  • Zinc Plated Hardware
  • Sold As A Kit
  • SKU: 1145042

Fits Vehicles:

  • 2007-2018 Jeep JK Wrangler (2-door)


  • Lift Height: 4 Inches
  • Max Tire Diameter: 37 Inches


  • 4 inch lift coil springs
  • SpeedBump bump stops
  • HD limit straps
  • Front and rear track bars
  • Exhaust spacer
  • Eight (8) fully adjustable Alpine long flexarms
  • Long flexarm brackets
  • Front brake line anchor kit
  • Additional gusseting and bracketry
  • And more


  • This is a very heavy item and must be shipped by freight truck
  • Requires aftermarket wheels with 4.5 inch backspacing or less - or TeraFlex Offset Wheel Adapters for stock wheels
  • Cutting and welding required
  • 2012-2018 JKs require exhaust spacers (P/N 2610000) or other exhaust modification for proper driveshaft clearance
  • Driveshaft modifications are highly recommended with this kit
  • Requires longer shocks - Falcon Shocks recommended
  • Install Time: 24 Hours