Build your Jeep Wrangler JK (2007–2018) into a capable, trail-dominating machine with high-performance off-road parts and accessories from Underdog Motorsports. Whether you’re crawling rocks, hitting the dunes, or setting up for overland adventures, we’ve got the gear to get it done right.
Explore our wide selection of lift kits, shocks, bumpers, skid plates, wheels, tires, lighting, winches, and recovery gear—all from top brands trusted by Jeep owners worldwide.
From weekend warriors to daily drivers, we’ve got the right upgrades to improve performance, durability, and off-road capability. Let Underdog Motorsports help you turn your JK into the rig you’ve always wanted.
Axle Housing|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
TeraFlex JK Front Tera30 Replacement Axle Housings include a heavy-duty housing with axle tubes, bracketry, and forged inner knuckles, pre-installed inner seals and upper...
Axle Housing|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
TeraFlex JK Front Tera30 Replacement Axle Housings include a heavy-duty housing with axle tubes, bracketry, and forged inner knuckles, pre-installed inner seals and upper...
Axle Housing|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
TeraFlex JK Front Tera30 Replacement Axle Housings include a heavy-duty housing with axle tubes, bracketry, and forged inner knuckles, pre-installed inner seals and upper...
Axle Housing|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
The heavy-duty TeraFlex JK Rear CRD60 Full-Float Axle Housing provides maximum protection, performance, and durability for the JK Wrangler, while the exclusive Constant Radius...
Axle Housing|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
The heavy-duty TeraFlex JK Rear CRD60 Semi-Float Axle Housing provides maximum protection, performance, and durability for the JK Wrangler, while the exclusive Constant Radius...
Axle Housing|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
The heavy-duty TeraFlex JK Rear CRD60 Semi-Float Axle Housing provides maximum protection, performance, and durability for the JK Wrangler, while the exclusive Constant Radius...
Axle Housing|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
The heavy-duty TeraFlex JK Rear CRD60 Semi-Float Axle Housing provides maximum protection, performance, and durability for the JK Wrangler, while the exclusive Constant Radius...
Axle Housing|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
The heavy-duty TeraFlex JK Rear CRD60 Semi-Float Axle Housing provides maximum protection, performance, and durability for the JK Wrangler, while the exclusive Constant Radius...
Axle Housing|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
The heavy-duty TeraFlex JK Rear CRD60 Full-Float Axle Housing provides maximum protection, performance, and durability for the JK Wrangler, while the exclusive Constant Radius...
Axle Housing|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
The heavy-duty TeraFlex JK Rear CRD60 Full-Float Axle Housing provides maximum protection, performance, and durability for the JK Wrangler, while the exclusive Constant Radius...
Axle Housing|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
The heavy-duty TeraFlex JK Rear CRD60 Full-Float Axle Housing provides maximum protection, performance, and durability for the JK Wrangler, while the exclusive Constant Radius...
Axle Assembly|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Replace your weak stock front axle shafts with a set of heavy-duty TeraFlex Axle Shafts! These axle shafts are constructed from high-strength dual-heat treated...
Axle Assembly|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Eliminate the weak link in your rear axle with this TeraFlex JK: Rear Axle 8-Lug Full-Float Conversion Kit. Oversized and heavier wheel/tire combos, highspeed...
Axle Assembly|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Eliminate the weak link in your rear axle with this TeraFlex JK: Rear Axle 8-Lug Full-Float Conversion Kit. Oversized and heavier wheel/tire combos, highspeed...
Axle Assembly|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Eliminate the weak link in your rear axle with this TeraFlex JK: Rear Axle 8-Lug Full-Float Conversion Kit. Oversized and heavier wheel/tire combos, highspeed...
Axle Assembly|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Eliminate the weak link in your rear axle with this TeraFlex JK: Rear Axle 8-Lug Full-Float Conversion Kit. Oversized and heavier wheel/tire combos, highspeed...
Axle Assembly|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Eliminate the weak link in your rear axle with this TeraFlex JK: Rear Axle 8-Lug Full-Float Conversion Kit. Oversized and heavier wheel/tire combos, highspeed...
Axle Assembly|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Eliminate the weak link in your rear axle with this TeraFlex JK: Rear Axle 8-Lug Full-Float Conversion Kit. Oversized and heavier wheel/tire combos, highspeed...
Axle Assembly|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Eliminate the weak link in your rear axle with this TeraFlex JK: Rear Axle 8-Lug Full-Float Conversion Kit. Oversized and heavier wheel/tire combos, highspeed...
Axle Assembly|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Upgrade your Dana 44 rear axle with this TeraFlex JK Rear Dana 44 8-Lug Full-Float Conversion Kit. Heavy wheels and oversized tires, high-speed impacts,...
Axle Assembly|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Upgrade your Dana 44 rear axle with this TeraFlex JK Rear Dana 44 8-Lug Full-Float Conversion Kit. Heavy wheels and oversized tires, high-speed impacts,...
Axle Assembly|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Upgrade your Dana 44 rear axle with this TeraFlex JK Rear Dana 44 8-Lug Full-Float Conversion Kit. Heavy wheels and oversized tires, high-speed impacts,...
Axle Housing Gusset|Axle Housing|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
TeraFlex JK: Front Axle Inner Sleeve and/or Inner Knuckle Gusset Kits reinforce the weak axle tubing and/or knuckles on JK Wrangler/Unlimited Dana 30 or...
Axle Housing Gusset|Axle Housing|Axle|Differential|Drivetrain & DifferentialsBest Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
TeraFlex JK: Front Axle Inner Sleeve and/or Inner Knuckle Gusset Kits reinforce the weak axle tubing and/or knuckles on JK Wrangler/Unlimited Dana 30 or...
Best Selling ProductsControl Arm Brackets|Tabs, Gussets & Brackets|HardwareJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
These CAD-engineered TeraFlex JK: Alpine Long Arm Brackets are designed for maximum strength. By streamlining the frame-end mounting points, we were able to incorporate...
Best Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, BroncoShock Absorber Extender|Shock Absorber|Shocks|Suspension|Suspension / Steering / Brakes
Combine these TeraFlex JK/JKU Rear Upper Shock Extension Brackets with factory length shock absorbers on JK Wrangler or JK Wrangler Unlimited models with a...
Best Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, BroncoShock Absorber Extender|Shock Absorber|Shocks|Suspension|Suspension / Steering / Brakes
Combine these TeraFlex JK/JKU Front Upper Shock Extension Studs with factory length shock absorbers on JK Wrangler or JK Wrangler Unlimited models with a...
Best Selling ProductsJeep Off-Road Parts & AccessoriesJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJeep Wrangler Off-Road Parts & AccessoriesLicense Plate Bracket|License Plate|Exterior Parts & Car CareNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
This JK: Alpha License Plate and 3rd Brake Light Mount Bracket Kit relocates your license plate and 3rd brake light from their vulnerable stock...
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