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Fitment

YearsMakeModel
2007-2018JeepWrangler JK
2007-2018JeepWrangler JK Unlimited

Features

  • Installation does not require any cutting or removal of factory bracketry
  • Cast from HD ductile iron
  • Reinforces key section areas prone to stress and deflection
  • Maintains correct steering geometry angles for superior highway drivability
  • Provides HD solution for several weak vulnerabilities found in stock JK axle steering configuration
  • Increases tie rod ground clearance by more than 1-1/8” to reduce tie rod impact

Quick Specs

  • 3 Hours install time
  • 4-6” Lift
  • Part Number : 4390870

Important Notes

  • REQUIRES aftermarket wheels w/ 4.75” backspacing or less – or 1.25” Wheel Offset Adapter Pair (#1055000 x 2) for stock wheels — NOT INCLUDED.
  • NOT compatible w/ Falcon Nexus EF Steering Stabilizers when used w/ factory-style track bar bracket and/or factory-style axle housing.
  • REQUIRES additional modifications/components to flip the Drag Link over the front axle to correct track bar angle, optimize steering geometry, and improve handling — NOT INCLUDED.
  • MUST be used w/ a HD Drag Link Flip Kit (#1853930) (w/ HD Tie Rod Kit: #1853905). HD Drag Link Flip Kit is also INCLUDED in our complete High Steer System (#4390975) (w/ HD Tie Rod Kit: #4391000) and HD Drag Link Flip Kit w/ Track Bar Drop Bracket & Frame Brace Kit (#1600450).
  • Other REQUIRED components: Front Track Bar Drop Bracket & Frame Brace Kit (#1600444) or Front Track Bar Drop Bracket Kit (#1953000), HD Tie Rod Kit (#1853910), and Steering Stabilizer Relocation Kit (1-5/8” HD Tie Rod: #1123160).

TeraFlex 4390870 Dana 30/44 High Steer Knuckle Pair (4-6” Lift)

2007-2018 Jeep Wrangler JK 2007-2018 Jeep Wrangler JK Unlimited
4.9256198347107 847 5
98.512396694215%
4.9/5 out of 847 Company Reviews. Rating:
TeraFlex 4390870 Dana 30/44 High Steer Knuckle Pair (4-6” Lift)
614.99In stock
2007-2018 Jeep Wrangler JK 2007-2018 Jeep Wrangler JK Unlimited
  • Brand : TeraFlex
  • SKU : 4390870
  • Part Number : 4390870
$614.99
$614.99

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Product Details

TeraFlex JK: Dana 30/44 High Steer Knuckles address several weaknesses prevalent in the stock axle steering configuration on JK Wrangler/Unlimited models with 4–6” lift kits. These High Steer Knuckles maintain correct steering geometry angles for superior highway drivability. Tie Rod ground clearance is increased by more than 1-1/8” to prevent tie rod damage and bending.

Cast from heavy-duty ductile iron and reinforced in areas prone to stress and deflection. Compatible with all factory and aftermarket axle shafts, ball joints, wheel hubs, and tie rods. Does not affect operation of factory stability and traction control systems including ESP and ABS.

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