Skip to content
  • 💰 Get the latest and spend less with our big sale! 💰
  • 💰 Get the latest and spend less with our big sale! 💰
Radio Control & Model ShopRadio Control & Model Shop
  • Menu
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

  • Fly
    • Replacement Parts
    • Rockets
    • Aircraft
    • Skydog Kites
    • Bags, Boxes & Cases
    • Flight Simulators
  • Drive
    • 1/18, 1/24, 1/36 Scale
    • Batteries
    • Pine Car Derby
    • 1/10 Scale
    • Vehicle Bodies
    • Replacement Parts
    • Tires & Wheels
    • 1/5, 1/6, 1/8 Scale
    • Motors and ESC’s
    • 1/12, 1/14, 1/16 Scale
  • Drones
    • Drone Parts
    • Goggles, Headsets
    • Clothing and Mugs
    • Video Downlinks & Assy
    • SMA / RCA
    • Memory Cards
    • Antennas
    • Flight Training
  • Telescopes/Optics
    • Eyepieces
    • Camera & Eyepiece Adpt
    • Cameras & Accessories
    • Mounts and Tripods
    • Telescope Accy.
    • Binoculars
    • Filters & Lenses
    • Astro Imaging
  • Power
    • Speed Controllers
    • Chargers & Meters
    • LiPo
    • Gas & Glow Items
    • Lighting
    • Meters & Balancers
    • Soldering Supplies
    • Misc. Battery Accy
    • Trans/Rec Packs
    • Individual Cells
 

Traxxas Gearbox Halves (Front & Rear): 3991X

Home / Drive / Replacement Parts
  • Traxxas Ring Gear/Diff/Pinion Gear: 9579R -Radio Control & Model Shop 25035 TRA9579R 1 900
  • Traxxas Bumpers, Front And Rear (Black Chrome): 5335X -Radio Control & Model Shop httpstraxxas.comsitesdefaultfilesimagesproducts5335x
New
Traxxas Gearbox Halves (Front & Rear): 3991X

$10.00 Original price was: $10.00.$7.00Current price is: $7.00.

SKU: YXRSY 5490370871445 Categories: Drive, Replacement Parts Tags: Summit, Traxxas
  • Service with a smile, always online.
  • Effortless solutions, excellent customer care.
  • Your satisfaction is 100% guaranteed.
  • No-Questions-Asked Returns
Browse
  • Drive
    • 1/10 Scale
    • 1/12, 1/14, 1/16 Scale
    • 1/18, 1/24, 1/36 Scale
    • 1/5, 1/6, 1/8 Scale
    • Batteries
    • Motors and ESC's
    • Pine Car Derby
    • Replacement Parts
    • Tires & Wheels
    • Vehicle Bodies
  • Drones
    • Antennas
    • Clothing and Mugs
    • Drone Parts
    • Flight Training
    • Goggles, Headsets
    • Memory Cards
    • SMA / RCA
    • Video Downlinks & Assy
  • Fly
    • Aircraft
    • Bags, Boxes & Cases
    • Flight Simulators
    • Replacement Parts
    • Rockets
    • Skydog Kites
  • Power
    • Chargers & Meters
    • Gas & Glow Items
    • Individual Cells
    • Lighting
    • LiPo
    • Meters & Balancers
    • Misc. Battery Accy
    • Soldering Supplies
    • Speed Controllers
    • Trans/Rec Packs
  • Telescopes/Optics
    • Astro Imaging
    • Binoculars
    • Camera & Eyepiece Adpt
    • Cameras & Accessories
    • Eyepieces
    • Filters & Lenses
    • Mounts and Tripods
    • Telescope Accy.
  • Uncategorized
  • Description
  • Reviews (0)

Gearbox Halves (Front & Rear): EMX

Part No. 3991X

Reviews

There are no reviews yet.

Be the first to review “Traxxas Gearbox Halves (Front & Rear): 3991X” Cancel reply

Related products

New
Traxxas Axle Cover, Front Or Rear (Red) (2): 9738-Red
Quick View

Drive

Traxxas Axle Cover, Front Or Rear (Red) (2): 9738-Red

$4.00 Original price was: $4.00.$2.80Current price is: $2.80.
New
Traxxas Suspension Kit, X-Maxx® WideMaxx®, Green: 7895G
Quick View

Drive

Traxxas Suspension Kit, X-Maxx® WideMaxx®, Green: 7895G

$199.95 Original price was: $199.95.$98.99Current price is: $98.99.
New
Axial 1/10 Wraith Spawn, 4WD, RTD (Requires Battery & Charger)
Quick View

Drive

Axial 1/10 Wraith Spawn, 4WD, RTD (Requires Battery & Charger)

$369.99 Original price was: $369.99.$97.99Current price is: $97.99.
New
LOSI 1/16 Mini JRXT Brushed 2WD LE Racing Monster Truck RTR
Quick View

1/12, 1/14, 1/16 Scale

LOSI 1/16 Mini JRXT Brushed 2WD LE Racing Monster Truck RTR

$169.99 Original price was: $169.99.$96.99Current price is: $96.99.
New
Traxxas TRX4 Stainless Steel Hardware Kit: 8298
Quick View

Drive

Traxxas TRX4 Stainless Steel Hardware Kit: 8298

$35.95 Original price was: $35.95.$25.17Current price is: $25.17.
New
Front Upper And Lower A_Arm: Arrma Kraton: RPM81482
Quick View

Drive

Front Upper And Lower A_Arm: Arrma Kraton: RPM81482

$12.95 Original price was: $12.95.$9.07Current price is: $9.07.
New
Traxxas 1/18 TRX-4M Land Rover® Defender®: Green
Quick View

1/18, 1/24, 1/36 Scale

Traxxas 1/18 TRX-4M Land Rover® Defender®: Green

$149.95 Original price was: $149.95.$97.99Current price is: $97.99.
New
3 Cell 5000mAh 11.1V 100C Smart G2 Hard Case LiPo: IC3
Quick View

Drive

3 Cell 5000mAh 11.1V 100C Smart G2 Hard Case LiPo: IC3

$99.99 Original price was: $99.99.$69.99Current price is: $69.99.
OUR SHOP
  • My account
  • Checkout
  • Cart
  • Payment Method
CONTACT
  • About Us
  • Contact Us
  • FAQ
  • Returns & Exchanges
CUSTOMER SERVICES
  • Privacy Policy
  • Shipping & Returns
  • Delivery
  • Term and Conditions
STAY IN TOUCH

Sign up for exclusive offers, original stories, events and more.

    Copyright 2026 © www.rcmodelplay.com
    • Fly
      • Replacement Parts
      • Rockets
      • Aircraft
      • Skydog Kites
      • Bags, Boxes & Cases
      • Flight Simulators
    • Drive
      • 1/18, 1/24, 1/36 Scale
      • Batteries
      • Pine Car Derby
      • 1/10 Scale
      • Vehicle Bodies
      • Replacement Parts
      • Tires & Wheels
      • 1/5, 1/6, 1/8 Scale
      • Motors and ESC’s
      • 1/12, 1/14, 1/16 Scale
    • Drones
      • Drone Parts
      • Goggles, Headsets
      • Clothing and Mugs
      • Video Downlinks & Assy
      • SMA / RCA
      • Memory Cards
      • Antennas
      • Flight Training
    • Telescopes/Optics
      • Eyepieces
      • Camera & Eyepiece Adpt
      • Cameras & Accessories
      • Mounts and Tripods
      • Telescope Accy.
      • Binoculars
      • Filters & Lenses
      • Astro Imaging
    • Power
      • Speed Controllers
      • Chargers & Meters
      • LiPo
      • Gas & Glow Items
      • Lighting
      • Meters & Balancers
      • Soldering Supplies
      • Misc. Battery Accy
      • Trans/Rec Packs
      • Individual Cells
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.