Upgrade your Jeep Wrangler TJ (1997–2006) with high-quality off-road parts and accessories designed for strength, performance, and rugged style. Whether you’re restoring a classic trail rig or building a capable crawler, Underdog Motorsports has the gear to get your TJ ready for adventure.
Our selection includes lift kits, suspension components, control arms, off-road bumpers, skid plates, wheels, tires, lighting, and recovery gear—all from top-tier brands known for Jeep performance.
Bring your TJ to life with parts built to handle tough terrain while delivering solid ride quality and aggressive looks. Start your Jeep Wrangler TJ build today with help from the off-road experts at Underdog Motorsports
Air Intake SystemsBest Selling ProductsJeep Off-Road Parts & AccessoriesJEEP WRANGLER TJJeep Wrangler TJ Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, BroncoThrottle Body Spacers
Silver Bullet throttle body spacers create turbulence in the air flow at the point just prior entry into the engine increasing horsepower, torque and...
Best Selling ProductsDifferential YokesDrivetrainJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJEEP WRANGLER TJJeep Wrangler TJ Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Yukon Gear and Axle manufactures a complete line of general replacement and performance series of pinion yokes for many street, racing, and heavy-duty off-road...
Best Selling ProductsDiff CoversDrivetrainJEEP WRANGLER TJJeep Wrangler TJ Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Yukon Hardcore Diff Covers are constructed from thick-walled, high-strength nodular steel to protect lockers, gears and axles from the most extreme hits in off...
Best Selling ProductsDiff CoversDrivetrainJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJEEP WRANGLER TJJeep Wrangler TJ Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Yukon Hardcore Diff Covers are constructed from thick-walled, high-strength nodular steel to protect lockers, gears and axles from the most extreme hits in off...
Best Selling ProductsDiff CoversDrivetrainJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJEEP WRANGLER JLJeep Wrangler JL Off-Road Parts & AccessoriesJEEP WRANGLER TJJeep Wrangler TJ Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Yukon Hardcore Diff Covers are constructed from thick-walled, high-strength nodular steel to protect lockers, gears and axles from the most extreme hits in off...
AxlesBest Selling ProductsDrivetrainJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJEEP WRANGLER TJJeep Wrangler TJ Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Yukon high-performance axles are built with high-tensile strength 4340 chromoly, use superior production methods that include cold roll formed splines, and feature advanced induction...
Yukon high-performance axles are built with high-tensile strength 4340 chromoly, use superior production methods that include cold roll formed splines, and feature advanced induction...
Best Selling ProductsDifferential Install KitsDrivetrainJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJEEP WRANGLER TJJeep Wrangler TJ Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Yukon Carrier Installation Kits are a convenient and low-cost solution for carrier changes in cases where one is upgrading to a positraction limited slip...
Best Selling ProductsBushing KitsJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJEEP WRANGLER TJJeep Wrangler TJ Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, BroncoPerformance Suspension Upgrades for Toyota, Jeep & MoreSuspension
Whether its replacing deteriorated original units, to compensate loading one side of a vehicle common to 4x4 or looking to obtain that preferred ride...
Best Selling ProductsBushing KitsJeep Off-Road Parts & AccessoriesJEEP WRANGLER TJJeep Wrangler TJ Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, BroncoPerformance Suspension Upgrades for Toyota, Jeep & MoreSuspension
Worn front control arm bushings have a huge influence on vehicle stability, steering precision and braking efficiency. Replace worn bushings to as new condition...
Air Intake SystemsBest Selling ProductsCold Air IntakesJeep Off-Road Parts & AccessoriesJEEP WRANGLER TJJeep Wrangler TJ Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, Bronco
Volant Performance Air Intake Systems are designed for one thing, Performance. By optimizing airflow and utilizing free-flowing filters, Volant Performance Intakes outflow stock systems...
Best Selling ProductsCamber KitsJeep Off-Road Parts & AccessoriesJEEP WRANGLER TJJeep Wrangler TJ Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, BroncoPerformance Suspension Upgrades for Toyota, Jeep & MoreSuspension
These cams replace the front axle bolts to provide caster and pinion angle (up to 3 degree total change). California Residents WARNINGInstallation InstructionsThis Part...
Remove and replace ball joints without "brute force" methods that can cause costly damage. Easily service 4WD ball joints in addition to servicing most...
Best Selling ProductsExterior StylingExterior TrimJeep Off-Road Parts & AccessoriesJEEP WRANGLER JKJeep Wrangler JK Off-Road Parts & AccessoriesJEEP WRANGLER TJJeep Wrangler TJ Off-Road Parts & AccessoriesNewest Off-Road Products | Tacoma, 4Runner, Tundra, GX, BroncoTailgate AccessoriesTruck Bed Accessories
Tailgate stopper is an adjustable and sturdy stop that keeps your tailgate from closing when needed.Installation InstructionsWarranty Keeps Tailgate From Closing Adjustable And Sturdy...
Halogen conversion headlight kit with advanced multi surface reflector and clear glass lens. These headlights produce 60% more luminous beam than conventional OEM sealed...
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