X-Series Gearing

Maximize your Traxxas Experience by optimizing gearing for your specific vehicle.

Important

Gearing changes are dependent on model features and how you intend to drive your vehicle. It is important to use the recommended placements for your specific model to prevent undue wear and tear.

If you have made previous modifications to the motor mount, tires, or another gearing-related part, we recommend you speak to a Traxxas expert to assure a correct gearing change and the best possible driving experience. Receive support 7 days a week at 888-TRAXXAS.

Gearing Charts

X-Maxx▼

X-Maxx (Belted) 77096-4
Gearing Placement by Tooth Count
Spur	46	50	54
Pinion
11	-	-	A F
12	-	-	B F
13	-	-	B G
14	-	A E	C G
15	-	A F	C H
16	-	B F	D H
17	-	B G	D I
18	A E	C G	I
19	-	C H	-
20	-	-	-
21	-	-	-
22	-	-	-
23	-	-	-

X-Maxx 77086-4
Gearing Placement by Tooth Count
Spur	46	50	54
Pinion
11	-	-	A F
12	-	-	B F
13	-	-	B G
14	-	A E	C G
15	-	A F	C H
16	-	B F	D H
17	-	B G	D I
18	A E	C G	I
19	-	C H	-
20	-	-	-
21	-	-	-
22	-	-	-
23	-	-	-

Do not use / Does not fit

Recommended stock range

Included gearing (STOCK)

Higher speed gearing and flat surface driving only

Included gearing (higher speeds)

Notes:
Chart covers plastic (stock) and aluminum motor mounts. Part 7760.

X-Maxx Ultimate ▼

X-Maxx Ultimate 77097-4
Gearing Placement by Tooth Count
Spur	46	50	54
Pinion
11	-	-	A F
12	-	-	B F
13	-	-	B G
14	-	A E	C G
15	-	A F	C H
16	-	B F	D H
17	-	B G	D I
18	A E	C G	I
19	-	C H	-
20	-	-	-
21	-	-	-
22	-	-	-
23	-	-	-

Do not use / Does not fit

Recommended stock range

Included gearing (STOCK)

Higher speed gearing and flat surface driving only

Notes:
Chart covers plastic (stock) and aluminum motor mounts. Part 7760.

XRT ▼

XRT 78086-4
Gearing Placement by Tooth Count
Spur	46	50	54
Pinion
11	-	-	-
12	-	-	A F
13	-	-	B F
14	-	-	B G
15	-	A E	C G
16	-	A F	C H
17	-	B F	D H
18	-	B G	D I
19	A E	C G	-
20	A F	C H	-
21	B F	D H	-
22	B G	D I	-
23	C G	-	-

Do not use / Does not fit

Recommended stock range

Included gearing (STOCK)

Higher speed gearing and flat surface driving only

Included gearing (higher speeds)

Notes:
Chart covers plastic (stock) motor mounts only. For aluminum motor mounts, reference the XRT Ultimate table. Part 7760.

XRT Ultimate ▼

XRT Ultimate 78097-4
Gearing Placement by Tooth Count
Spur	46	50	54
Pinion
11	-	-	A F
12	-	-	B F
13	-	-	B G
14	-	A E	C G
15	-	A F	C H
16	-	B F	D H
17	-	B G	D I
18	A E	C G	I
19	A F	C H	-
20	B F	D H	-
21	B G	D I	-
22	C G	I	-
23	C H	-	-

Do not use / Does not fit

Recommended stock range

Included gearing (STOCK)

Higher speed gearing and flat surface driving only

Notes:
Chart covers aluminum (stock) motor mounts only. For plastic motor mounts, reference the XRT table. Part 7760.

Pro Scale Sand Car▼

Pro Scale Sand Car 109076-4
Gearing Placement by Tooth Count
Spur	46	50	54
Pinion
12	-	-	B F
13	-	-	B G
14	-	-	C G
15	-	-	C H
16	-	B F	D H
17	-	B G	D I
18	-	C G	-
19	-	C H	-
20	B F	D H	-
21	B G	D I	-
22	C G	-	-
23	C H	-	-