J Concepts

Developed with racers in mind, JConcepts Upgrade Parts combine innovation, precision, and durability to give hobbyists a competitive edge. Featuring lightweight materials, race-proven designs, and professional-grade construction, these upgrades enhance handling, strength, and consistency on the track.

Perfect for competitive drivers, bashers, and builders, JConcepts upgrades deliver performance and reliability—keeping your vehicles dialed in and ready for victory.

  • J Concepts JCI, 5.5 x 12mm Revolved Titanium Ball-Stud, 4pc JCO51352

    JCI, 5.5 x 12mm Revolved Titanium Ball-Stud, 4pc

    A sought-after piece in the RC world is the titanium ball-end which seemingly attaches to just about every corner of the Team Associated vehicle off-road product line. Previously, the kit versions were very heavy steel items which carry a lot of...
    MSRP: $27.00
    $22.95
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  • J Concepts Titanium, Finnisher 3x6mm Motor Screws, Black, 2pc, JCO25492 J Concepts Titanium, Finnisher 3x6mm Motor Screws, Black, 2pc, JCO25492

    Titanium, Finnisher 3x6mm Motor Screws, Black, 2pc,

    JConcepts is set to provide a new large diameter 3x6mm titanium screw specifically for use which require a washer or larger head application. Ideal for motor mounting, the new Finnisher screw has all the cuts, holes, and shapes you've come to expect from...
    MSRP: $15.00
    $12.75
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  • J Concepts Titanium, Finnisher 3x6mm Motor Screws, Blue, 2pc, JCO25491 J Concepts Titanium, Finnisher 3x6mm Motor Screws, Blue, 2pc, JCO25491

    Titanium, Finnisher 3x6mm Motor Screws, Blue, 2pc,

    JConcepts is set to provide a new large diameter 3x6mm titanium screw specifically for use which require a washer or larger head application. Ideal for motor mounting, the new Finnisher screw has all the cuts, holes, and shapes you've come to expect from...
    MSRP: $15.00
    $12.75
    Add to Cart
  • J Concepts Fin, 13mm Spring Cup, 0mm Off-Set, Blue, Fits Team JCO27211

    Fin, 13mm Spring Cup, 0mm Off-Set, Blue, Fits Team

    The spring cup is a finishing touch when it comes to a complete 13mm shock build for spring concentricity. The JConcepts spring cups are a 0mm off-set which is the most popular setting on the front and rear of the B6, B6.4, and B74 vehicles. The aluminum...
    MSRP: $23.00
    $19.55
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  • J Concepts RC10GT, Carbon Fiber Rear Shock JCO2420

    RC10GT, Carbon Fiber Rear Shock

    The RC10GT, the most classic nitro stadium truck design in RC history now has some option parts. JConcepts is spot on with the release of a Carbon Fiber option for the rear shock tower. The stock vehicle comes standard with a fiberglass unit which...
    MSRP: $35.00
    $29.75
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  • J Concepts Fin, 13mm Spring Cup, 5mm Off-Set, Blue, Fits Team JCO27031

    Fin, 13mm Spring Cup, 5mm Off-Set, Blue, Fits Team

    The spring cup is a finishing touch when it comes to a complete 13mm shock build for spring concentricity. The JConcepts spring cups are a 5mm off-set which is the most popular setting on the front of the B6 and B6.4 vehicle. The aluminum material in...
    MSRP: $23.00
    $19.55
    Add to Cart
  • J Concepts RC10 Worlds 2.5mm Carbon Fiber Front Shock Tower JCO2305

    RC10 Worlds 2.5mm Carbon Fiber Front Shock Tower

    The RC10 Classic comes standard with a fiberglass shock tower, which carries all the original geometry; but lacks the pizzazz, strength, optional holes, and appearance that Carbon Fiber can provide. This shock tower maintains the classic geometry but...
    MSRP: $25.00
    $21.25
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  • J Concepts 17mm Hex Axle Kit ,Black, for Losi LMT, 4pcs JCO2981 J Concepts 17mm Hex Axle Kit ,Black, for Losi LMT, 4pcs JCO2981

    17mm Hex Axle Kit ,Black, for Losi LMT, 4pcs

    A tremendous upgrade to the Losi LMT is the adaptation of a 17mm hex axle kit. JConcepts has tested, and through extensive track time with team racers, designed a heavy-duty item for a vehicle that makes it's living in the air and in hardcore bash...
    MSRP: $30.00
    $25.50
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  • J Concepts RC8B4.1 Fin Titanium Turnbuckle Set, Stealth Black, JCO25072

    RC8B4.1 Fin Titanium Turnbuckle Set, Stealth Black,

    JConcepts is Titanium with the introduction of the Fin turnbuckle sets designed specifically for style, durability, and performance. The base of the turnbuckle design is centered on a beefy 5mm square titanium (camber and steering links) which gradually...
    MSRP: $55.00
    $46.75
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  • J Concepts 48 Pitch, 29T, SS Machined Pinion Gear JCO2115

    48 Pitch, 29T, SS Machined Pinion Gear

    JConcepts introduces Silent Speed pinion gears for 48 pitch applications. The heart of any RC vehicle is the transmission, at the top of the transmission lies the spur gear; an integral part of racing performance, the part that drives it all, the 48P...
    MSRP: $8.00
    $6.80
    Add to Cart