Arrma spring list / chart for 4s and most 6s vehicles

jonUF02 · Feb 13, 2020

I have compiled a list of Arrma spring part numbers with length and standardized rate info since I couldn't find an easy source anywhere else. These are all the diameter that will fit 4s stock shocks and most 6s models. I excluded Infraction / Limitless since they are not really relevant to the sizes listed here. 8s options are easy to find, and sorry 3s guys, you can just upgrade to 4s larger diameter shocks.

Of course Tekno 1/8 scale springs for Truggy, Buggy, MT, etc. will work with many similar options, but generally a lot more expensive per pair. Those charts are readily available. Team Durango 1/8 springs are still out there and will work also.

I found this info from digging through many kit/version standard parts lists on the website. I also found most of it straight off this cross-reference sheet that's available for current kits on the website, very useful!
http://www.arrma-rc.com/pdf/xref/arrma-parts-xref-A.pdf

Sorted by Size then Rate:

Length (mm)	Rate (lb/in)	Part	position	Kits that included part:
60	9.70	AR330500	front	Talion 6s V3-4
70	3.80	AR330233	option	Typhon 6s
70	4.23	AR330235	front	Typhon 3s, Typhon 6s
70	4.57	AR330532	front	4s Outcast and Kraton
70	4.75	*AR330237	front	Typhon 6s
70	4.76	TD330781	front	Senton 6s
70	6.50	ARA330637	option	Mojave
70	7.00	ARA330638	option	Mojave
70	7.70	ARA330644	stock	Mojave
70	8.10	ARA330639	option	Mojave
70	8.60	ARA330640	option	Mojave
76	4.12	*AR330383	option	Typhon 6s
76	4.50	AR330384	option	Typhon 6s
76	4.94	*AR330385	option	Typhon 6s
84	2.93	AR330238	option	Typhon 6s
84	3.17	AR330239	rear	Typhon 3s, Typhon 6s, Senton 6s, Talion 6s V1
84	3.46	AR330240	option	Typhon 6s
84	4.00	AR330533	rear	4s Outcast and Kraton
84	5.40	AR330501	rear	Talion 6s V3-4
85	6.20	AR330507	front	Kraton 6s V2-4, Outcast 6s V1-4, Notorious 6s
95	5.00	AR330508	rear	Kraton 6s V2-4, Outcast 6s V1-4, Notorious 6s
110	3.20	ARA330643	stock	Mojave
110	3.40	ARA330641	option	Mojave
110	3.60	ARA330642	option	Mojave

bicketybam · Feb 13, 2020

Very nice! Good job ?

jonUF02 · Feb 13, 2020

Posting for my reference in tuning the 4S Outcast. Latest Tekno EB 2.0 chart. Some good choices in the 70-75mm length.

And another Tekno 1/8 spring chart

LibertyMKiii · Feb 13, 2020

Limitless / Infraction
ARA330600 35mm 27 lb/in
ARA330599 40mm 38 lb/in

Nero springs:
AR330419 65mm shock spring (2) 503gf/mm 28.1667 lb/in
AR330417 75mm shock spring (2) 317gf/mm 17.75 lb/in
AR330347 65mm shock spring (2) 420gf/mm 23 lb/in

vpr5793 · Feb 13, 2020

Def bookmarking this. Nice job dude!

jonUF02 · Mar 19, 2020

***removed info about HB springs, ordered a pair and they are a tiny bit too narrow in diameter to fit over the stock 4s shock bodies.

jkflow · Apr 10, 2020

Consolidated from above, added spring inner diameter and outer diameter (ID/OD) and conversion calculations.
Below are the listed lb/in ratings and the calculated N/mm and gf/mm values.
If they differ from advertised values, their listing is incorrect assuming the lb/in is correct.
Ex. Talion AR330500 is listed as #AR330500 SHOCK SPRINGS: 60mm 1.35N/mm (9.7lb/in)
In reality it's 9.7lb/in 1.699N/mm.
If anyone knows of springs with the same ID/OD let me know and I'll update.

			Rating lb/in	Rating N/mm	Rating gf/mm
ID	20.75	mm	1.0000	0.1751	17.8580
OD	24	mm	0.0560	5.7101	1.0000
			5.7101	1.0000	101.9716

Length (mm)	Rate (lb/in)	N/mm	gf/mm	Part	position	Kits that included part:
35	27	4.729	482.17	ARA330600	front	Limitless, Infraction
40	38	6.655	678.60	ARA330599	rear	Limitless, Infraction
60	9.7	1.699	173.22	AR330500	front	Talion 6s V3-4
65	23	4.028	410.73	AR330347	option	Nero, Big Rock
65	28.17	4.933	503.06	AR330419	option	Nero, Big Rock
70	3.8	0.665	67.86	AR330233	option	Typhon 6s
70	4.23	0.741	75.54	AR330235	front	Typhon 3s, Typhon 6s
70	4.57	0.800	81.61	AR330532	front	4s Outcast and Kraton
70	4.75	0.832	84.83	*AR330237	front	Typhon 6s
70	4.76	0.834	85.00	TD330781	front	Senton 6s
70	6.5	1.138	116.08	ARA330637	option	Mojave
70	7	1.226	125.01	ARA330638	option	Mojave
70	7.7	1.349	137.51	ARA330644	stock	Mojave
70	8.1	1.419	144.65	ARA330639	option	Mojave
70	8.6	1.506	153.58	ARA330640	option	Mojave
75	17.75	3.109	316.98	AR330417	option	Nero, Big Rock
76	4.12	0.722	73.57	*AR330383	option	Typhon 6s
76	4.5	0.788	80.36	AR330384	option	Typhon 6s
76	4.94	0.865	88.22	*AR330385	option	Typhon 6s
84	2.93	0.513	52.32	AR330238	option	Typhon 6s
84	3.17	0.555	56.61	AR330239	rear	Typhon 3s, Typhon 6s, Senton 6s, Talion 6s V1
84	3.46	0.606	61.79	AR330240	option	Typhon 6s
84	4	0.701	71.43	AR330533	rear	4s Outcast and Kraton
84	5.4	0.946	96.43	AR330501	rear	Talion 6s V3-4
85	6.2	1.086	110.72	AR330507	front	Kraton 6s V2-4, Outcast 6s V1-4, Notorious 6s
95	5	0.876	89.29	AR330508	rear	Kraton 6s V2-4, Outcast 6s V1-4, Notorious 6s
110	3.2	0.560	57.15	ARA330643	stock	Mojave
110	3.4	0.595	60.72	ARA330641	option	Mojave
110	3.6	0.630	64.29	ARA330642	option	Mojave

jonUF02 · May 12, 2020

More spring options for 16mm diameter, from Associated RC8

Fronts are 70mm length, Rears are 86mm length.

slick2500 · Jan 23, 2021

jonUF02 said:
I have compiled a list of Arrma spring part numbers with length and standardized rate info since I couldn't find an easy source anywhere else. These are all the diameter that will fit 4s stock shocks and most 6s models. I excluded Infraction / Limitless since they are not really relevant to the sizes listed here. 8s options are easy to find, and sorry 3s guys, you can just upgrade to 4s larger diameter shocks.

Of course Tekno 1/8 scale springs for Truggy, Buggy, MT, etc. will work with many similar options, but generally a lot more expensive per pair. Those charts are readily available. Team Durango 1/8 springs are still out there and will work also.

I found this info from digging through many kit/version standard parts lists on the website. I also found most of it straight off this cross-reference sheet that's available for current kits on the website, very useful!
http://www.arrma-rc.com/pdf/xref/arrma-parts-xref-A.pdf

Sorted by Size then Rate:

Length (mm) Rate (lb/in) Part position Kits that included part:
60 9.70 AR330500 front Talion 6s V3-4
70 3.80 AR330233 option Typhon 6s
70 4.23 AR330235 front Typhon 3s, Typhon 6s
70 4.57 AR330532 front 4s Outcast and Kraton
70 4.75 *AR330237 front Typhon 6s
70 4.76 TD330781 front Senton 6s
70 6.50 ARA330637 option Mojave
70 7.00 ARA330638 option Mojave
70 7.70 ARA330644 stock Mojave
70 8.10 ARA330639 option Mojave
70 8.60 ARA330640 option Mojave
76 4.12 *AR330383 option Typhon 6s
76 4.50 AR330384 option Typhon 6s
76 4.94 *AR330385 option Typhon 6s
84 2.93 AR330238 option Typhon 6s
84 3.17 AR330239 rear Typhon 3s, Typhon 6s, Senton 6s, Talion 6s V1
84 3.46 AR330240 option Typhon 6s
84 4.00 AR330533 rear 4s Outcast and Kraton
84 5.40 AR330501 rear Talion 6s V3-4
85 6.20 AR330507 front Kraton 6s V2-4, Outcast 6s V1-4, Notorious 6s
95 5.00 AR330508 rear Kraton 6s V2-4, Outcast 6s V1-4, Notorious 6s
110 3.20 ARA330643 stock Mojave
110 3.40 ARA330641 option Mojave
110 3.60 ARA330642 option Mojave

I've found some errors in this list. And how does the Senton only have front springs listed?

Arrma Kraton and Talion V1-V2 used TD330816 in the front and TD330786 in the rear.
Arrma Outcast V1 used the same shocks as the Kraton and Talion V1-V2.
Arrma Kraton V3-V4 and the Outcast V2-V3 used the AR330507 in front and the AR330508 in the rear.
Arrma Notorious V1-V2 used the same springs as the Kraton V3-V4.

GRC · May 2, 2021

Another error in the list. The Typhon 3s does not use 16mm springs.

Choyyinkong · Oct 2, 2021

jonUF02 said:
I have compiled a list of Arrma spring part numbers with length and standardized rate info since I couldn't find an easy source anywhere else. These are all the diameter that will fit 4s stock shocks and most 6s models. I excluded Infraction / Limitless since they are not really relevant to the sizes listed here. 8s options are easy to find, and sorry 3s guys, you can just upgrade to 4s larger diameter shocks.

Of course Tekno 1/8 scale springs for Truggy, Buggy, MT, etc. will work with many similar options, but generally a lot more expensive per pair. Those charts are readily available. Team Durango 1/8 springs are still out there and will work also.

I found this info from digging through many kit/version standard parts lists on the website. I also found most of it straight off this cross-reference sheet that's available for current kits on the website, very useful!
http://www.arrma-rc.com/pdf/xref/arrma-parts-xref-A.pdf

Sorted by Size then Rate:

Length (mm) Rate (lb/in) Part position Kits that included part:
60 9.70 AR330500 front Talion 6s V3-4
70 3.80 AR330233 option Typhon 6s
70 4.23 AR330235 front Typhon 3s, Typhon 6s
70 4.57 AR330532 front 4s Outcast and Kraton
70 4.75 *AR330237 front Typhon 6s
70 4.76 TD330781 front Senton 6s
70 6.50 ARA330637 option Mojave
70 7.00 ARA330638 option Mojave
70 7.70 ARA330644 stock Mojave
70 8.10 ARA330639 option Mojave
70 8.60 ARA330640 option Mojave
76 4.12 *AR330383 option Typhon 6s
76 4.50 AR330384 option Typhon 6s
76 4.94 *AR330385 option Typhon 6s
84 2.93 AR330238 option Typhon 6s
84 3.17 AR330239 rear Typhon 3s, Typhon 6s, Senton 6s, Talion 6s V1
84 3.46 AR330240 option Typhon 6s
84 4.00 AR330533 rear 4s Outcast and Kraton
84 5.40 AR330501 rear Talion 6s V3-4
85 6.20 AR330507 front Kraton 6s V2-4, Outcast 6s V1-4, Notorious 6s
95 5.00 AR330508 rear Kraton 6s V2-4, Outcast 6s V1-4, Notorious 6s
110 3.20 ARA330643 stock Mojave
110 3.40 ARA330641 option Mojave
110 3.60 ARA330642 option Mojave

Great compilation, does the diameter same for all?.

Kingpin · Jan 19, 2022

Does anyone know spring diameter.
I have the orange Tekno springs right now on my custom build and they are not stiff enough at all.
As soon as I put the tires on for a test fit the springs compressed like it was sitting in quick sand.
I think I am going to need double the rate of these which are at around 5lbs.

jkflow · Jan 19, 2022

ID and OD are listed above. Inner/Outer diameter.

GRC · Jan 20, 2022

Kingpin said:
I have the orange Tekno springs right now on my custom build and they are not stiff enough at all.
As soon as I put the tires on for a test fit the springs compressed like it was sitting in quick sand.
I think I am going to need double the rate of these which are at around 5lbs.

Racing rigs like Tekno can be half the weight of an Arrma, so yeah, they generally use much lighter springs. Arrma has the stiffest RC springs I've seen. East Tactics has a video with industrial springs that are much stiffer. I haven't tried them, but you might be interested. You'll have to grind them down to fit shocks properly.

Kingpin · Jan 20, 2022

GRC said:
Racing rigs like Tekno can be half the weight of an Arrma, so yeah, they generally use much lighter springs. Arrma has the stiffest RC springs I've seen. East Tactics has a video with industrial springs that are much stiffer. I haven't tried them, but you might be interested. You'll have to grind them down to fit shocks properly.

That's Gold man. TY!!!

BenBigfoot · Jan 21, 2022

Perfect. Just what I was looking for

GaFFLe · Feb 6, 2022

jkflow said:
Consolidated from above, added spring inner diameter and outer diameter (ID/OD) and conversion calculations.
Below are the listed lb/in ratings and the calculated N/mm and gf/mm values.
If they differ from advertised values, their listing is incorrect assuming the lb/in is correct.
Ex. Talion AR330500 is listed as #AR330500 SHOCK SPRINGS: 60mm 1.35N/mm (9.7lb/in)
In reality it's 9.7lb/in 1.699N/mm.
If anyone knows of springs with the same ID/OD let me know and I'll update.

Rating lb/in
Rating N/mm
Rating gf/mm

ID
20.75
mm
1.0000
0.1751
17.8580

OD
24
mm
0.0560
5.7101
1.0000

5.7101
1.0000
101.9716

Length (mm)
Rate (lb/in)
N/mm
gf/mm
Part
position
Kits that included part:
35
27
4.729
482.17
ARA330600
front
Limitless, Infraction
40
38
6.655
678.60
ARA330599
rear
Limitless, Infraction
60
9.7
1.699
173.22
AR330500
front
Talion 6s V3-4
65
23
4.028
410.73
AR330347
option
Nero, Big Rock
65
28.17
4.933
503.06
AR330419
option
Nero, Big Rock
70
3.8
0.665
67.86
AR330233
option
Typhon 6s
70
4.23
0.741
75.54
AR330235
front
Typhon 3s, Typhon 6s
70
4.57
0.800
81.61
AR330532
front
4s Outcast and Kraton
70
4.75
0.832
84.83
*AR330237
front
Typhon 6s
70
4.76
0.834
85.00
TD330781
front
Senton 6s
70
6.5
1.138
116.08
ARA330637
option
Mojave
70
7
1.226
125.01
ARA330638
option
Mojave
70
7.7
1.349
137.51
ARA330644
stock
Mojave
70
8.1
1.419
144.65
ARA330639
option
Mojave
70
8.6
1.506
153.58
ARA330640
option
Mojave
75
17.75
3.109
316.98
AR330417
option
Nero, Big Rock
76
4.12
0.722
73.57
*AR330383
option
Typhon 6s
76
4.5
0.788
80.36
AR330384
option
Typhon 6s
76
4.94
0.865
88.22
*AR330385
option
Typhon 6s
84
2.93
0.513
52.32
AR330238
option
Typhon 6s
84
3.17
0.555
56.61
AR330239
rear
Typhon 3s, Typhon 6s, Senton 6s, Talion 6s V1
84
3.46
0.606
61.79
AR330240
option
Typhon 6s
84
4
0.701
71.43
AR330533
rear
4s Outcast and Kraton
84
5.4
0.946
96.43
AR330501
rear
Talion 6s V3-4
85
6.2
1.086
110.72
AR330507
front
Kraton 6s V2-4, Outcast 6s V1-4, Notorious 6s
95
5
0.876
89.29
AR330508
rear
Kraton 6s V2-4, Outcast 6s V1-4, Notorious 6s
110
3.2
0.560
57.15
ARA330643
stock
Mojave
110
3.4
0.595
60.72
ARA330641
option
Mojave
110
3.6
0.630
64.29
ARA330642
option
Mojave

So for the Mojave EXB, are the fronts 70mm or 110mm and what are the rears?

jkflow · Feb 6, 2022

You can always check yourself:
https://www.arrma-rc.com/products/-/15/1/ALL/ALL/P1000/ALL
Select your rig and go to interactive view to find the right part number.

Above is a list of what is available in general, you have to do the leg work on your own rig.

GRC · Feb 13, 2022

jonUF02 said:
More spring options for 16mm diameter, from Associated RC8

Fronts are 70mm length, Rears are 86mm length.

View attachment 79814

Thanks for this. I tried MANY different spring combinations and found the Team Associated Yellow springs to be the best overall performers for 16mm shocks on a 3s Arrma. I've recommended them in other threads but didn't give proper credit to this post. I've ended up using even stiffer springs to specialize in landing big jumps but for all-round performance (speed, handling, jumping, etc.) the Team Associated Yellow springs worked best.

evolution · Apr 16, 2022

Has anyone tried springs from century springs? Can't really find anything else for my rig although I feel like $95usd is pretty steep for just springs.

Arrma spring list / chart for 4s and most 6s vehicles

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