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TeraFlex Axle Sleeve and Upper Knuckle Gusset Kits for 2007-2017 WRANGLER, 2018 WRANGLER JK - 4990900
Part Number: TMI-4990900
TeraFlex Axle Sleeve and Upper Knuckle Gusset Kits
Axle Sleeve and Gusset Kit, Steel, Natural, Dana 30, Dana 44, Front, Jeep, Kit
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Estimated Ship Date: Nov 9, 2026
Overview
Brand:
Manufacturer's Part Number:
4990900
Part Type:
Product Line:
Summit Racing Part Number:
TMI-4990900
UPC:
843885003465
Axle Housing Brace Type:
Vehicle specific
Welding Required:
Yes
Brace Material:
Steel
Brace Color:
Natural
Quantity:
Sold as a kit.
TeraFlex Axle Sleeve and Upper Knuckle Gusset Kits
Jeep Wrangler JK's are extremely popular for off-road use and strongly built in stock form. Anytime you're running 35 in. or larger tires you need TeraFlex axle sleeve and upper knuckle gusset kits. These kits include DOM sleeves to strengthen the axle tubes, and upper C- knuckle gussets to alleviate a weakness issue. These kits are designed to alleviate the extra stresses larger tires cause on your jeep. The axle-sleeves are made of DOM tubing and will reduce the likelihood of bending or breaking your housing. The upper gussets are 1/2 in. thick steel for extreme strength, while allowing plenty of surface area for welding. Breaking an axle is tough, breaking the entire housing or C's may leave you stranded. Give your JK the trail rating you deserve with TeraFlex axle sleeve and upper knuckle gusset kits.
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Some parts are not legal for use in California or other states with similar laws / regulations
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