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Traxxas Idler Gear, 20-Tooth/ Idler Ge (Traxxas 3996X | TRA3996X)

Model: Traxxas 3996X
Dist. #: TRA3996X   SKU: TRA3996X

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Store Pickup:

South Jordan, UT
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Price:  $5.99

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Updated on Sep 27, 2025 07:22:42 AM

Idler Gear 20T/Idler Gear Shaft E-Maxx...
This is the replacement 20 Tooth Idler Equipment and Shaft for the
Traxxas E-Maxx 4WD RTR.

FEATURES:
Steel building and construction, gun metal in color
Replaces a worn or broken idler gear and shaft

CONSISTS OF:
One 20 Tooth Idler Equipment
One 5x18mm Idler Equipment Shaft

NEEDS:
Setup following the design manual

SPECS:
Outdoors Size: .86" (22mm)
Inside Size: .43" (11mm)
Density: .50" (12.5mm)

Right here is one more thing that compliments the thing being reviewed.

Gearbox Halves, Shift Detent B

These are the replacement Gearbox Halves for the Traxxas E-Maxx Truck.

FEATURES:
Black plastic building and construction

CONSISTS OF:
Gearbox halves (front and back) and screws

NEEDS:
Rest of the gearbox contents

SPECS:
Length: 2.67 (68mm) (at best point)
Width: 3.42" (87mm) (at best point)

This thing is frequently acquired with the above pointed out thing.

Input Shaft/ Drive Gear Assemb

This is the replacement Input Shaft/Drive Equipment Assembly for the
Traxxas 3905 E-Maxx Truck.

FEATURES:
Steel shaft, black in color
Steel drive gear assembly, silver in color

CONSISTS OF:
One Input Shaft with 18 Tooth Top Equipment

NEEDS:
Setup following the design manual

SPECS:
Shaft Size: 5mm
Shaft Length: 3.53" (90mm)
Thread Size: 4mm

This thing compliments the main item here.

5 X 11 X 4Mm Ball Bearing (2) Blue Rubber Shield R Evo

This is a 2 pack of 5X11mm Ball Bearings for the Traxxas Revo.

FEATURES:
Metal bearing building and construction
Blue rubber dirt guards

CONSISTS OF:
(2) 5X11mm ball bearings, Part #5116

SPECS:
Inside diameter: 3/16" (5mm)
Outdoors diameter: 7/16" (11mm)
Width: 5/32" (4mm)

You will enjoy this item if you have the item previously stated.

6 X 12 X 4Mm Ball Bearing (2) Blue Rubber Sheild R Evo

This is a 6X12mm Ball Bearing Set from Traxxas.

FEATURES:
Steel building and construction
Blue rubber dirt guards

CONSISTS OF:
(2) ball bearings, Part #5117

SPECS:
Inside diameter: 6mm
Outdoors diameter: 12mm
Width: 4mm

COMMENTS:
This bearing set is utilized in the transmission and differentials of
    the Revo.

The listed below thing also sets truly well with the thing being reviewed.

Output Shaft, Transmission

This is the Transmission Output Shaft for the Traxxas E-Maxx.

FEATURES:
Metal building and construction, black in color

CONSISTS OF:
One transmission output shaft, Part #5369

NEEDS:
Setup on the Traxxas E-Maxx

SPECS:
General length: 2.75" (70mm)
Size of drive pet install: .39" (10mm)
Size of shaft: .23" (6mm)

The listed below thing also sets truly well with the thing being reviewed.

Output Gear, 33 T W/ Spacers (

This is the Output Equipment 33T for the Traxxas E-Maxx Truck.

FEATURES:
Black nylon building and construction

CONSISTS OF:
One 33T output gear
Two spacers

NEEDS:
Silicone Grease, usage TRAC6037

SPECS:
Outer diameter: 1.37" (35mm)
Density: 1.02" (26mm)
X-Plosion Parts Finder Part also Fits on the vehicles below:

Frequently Bought Together

Traxxas Idler Gear, 20-Tooth/ Idler Ge
+
Traxxas 5 X 11 X 4Mm Ball Bearing (2) Blue Rubber Shield R Evo
+
Traxxas OUTPUT GEAR, 36-TOOTH, ME
This Item: Traxxas Idler Gear, 20-Tooth/ Idler Ge
$5.99
Traxxas 5 X 11 X 4Mm Ball Bearing (2) Blue Rubber Shield R Evo
$4.49
Traxxas OUTPUT GEAR, 36-TOOTH, ME
$10.49

Total Price: $20.97

Add All Three To Cart

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