Molas de suspensão - Yamaha

How to choose the right spring for my weight, usage, and bike?

Choosing the correct spring rate for the front suspension or rear shock of your motocross or enduro bike is essential to achieving optimal and safe handling.

Below, you will find links to spring rate recommendation tables based on the rider's weight, bike brand, model, and year, for both Motocross and Enduro.

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YAMAHA Motocross spring rate chart

The "Rider's weight" is supposed without racegear.

Yamaha 65 YZ

Yamaha 65 YZ 2018-2024

Standard: Fork: 31-330-2.8 / Shock: 55-205-40

Rider's weight	Fork springs	Shock spring
30-35kg	0.24	3.5
35-40kg	0.26	3.75
40-45kg	Standard	Standard
45-50kg	0.30	4.25
50-55kg	0.32	4.5
55-60kg
60-65kg

Yamaha 85 YZ

Yamaha 85 YZ 2000-2024 (small wheels)

Standard: Fork: 31-430-2.8 / Shock: 55-220-46

Rider's weight	Fork springs	Shock spring
35-40kg		3.75
40-45kg	0.24	4.0
45-50kg	0.26	4.25
50-55kg	Standard	Standard
55-60kg	0.30	4.75
60-65kg	0.32	5.0
65-70kg	0.34	5.25
70-75kg	0.36	5.5

Yamaha 85 YZ 2000-2015 (large wheels)

Standard: Fork: 31-430-2.9 / Shock: 55-220-48

Rider's weight	Fork springs	Shock spring
35-40kg		4.0
40-45kg	0.24	4.25
45-50kg	0.26	4.5
50-55kg	Standard	Standard
55-60kg	0.30	5.0
60-65kg	0.32	5.25
65-70kg	0.34	5.5
70-75kg	0.36	5.75

Yamaha 85 YZ 2016-2024 (large wheels)

Standard: Fork: 0.29kg / Shock: 5.0kg

Rider's weight	Fork springs	Shock spring
35-40kg	0.24	4.0
40-45kg	0.26	4.25
45-50kg	0.28	4.5
50-55kg	Standard	Standard
55-60kg	0.32	5.25
60-65kg	0.34	5.5
65-70kg	0.36	5.75
70-75kg		6.0

Yamaha 125 YZ

Yamaha 125 YZ 2004

Standard: Fork: 43.2-458-4.0 / Shock: 59/62-270-46

Rider's weight	Fork springs	Shock spring
45-55kg	0.36	4.2
55-65kg	0.38	4.4
65-75kg	Standard	Standard
75-85kg	0.42	4.8
85-95kg	0.44	5.0
95-105kg	0.46	5.2
105-115kg	0.48	5.4
115-125kg	0.50	5.6

Yamaha 125 YZ 2016-2021

Standard: Fork: 43.5-455-4.2 / Shock: 59/62-270-47

Rider's weight	Fork springs	Shock spring
45-55kg	0.38	4.2
55-65kg	0.40	4.4
65-75kg	Standard	Standard
75-85kg	0.44	4.8
85-95kg	0.46	5.0
95-105kg	0.48	5.2
105-115kg	0.50	5.4
115-125kg	0.52	5.6

Yamaha 125 YZ 2005

Standard: Fork: 43.2-470-4.0 / Shock: 59/62-270-46

Rider's weight	Fork springs	Shock spring
45-55kg	0.36	4.2
55-65kg	0.38	4.4
65-75kg	Standard	Standard
75-85kg	0.42	4.8
85-95kg	0.44	5.0
95-105kg	0.46	5.2
105-115kg	0.48	5.4
115-125kg	0.50	5.6

Yamaha 125 YZ 2022-2024

Standard: Fork: 43.5-498-4.2 / Shock: 59/62-270-46

Rider's weight	Fork springs	Shock spring
45-55kg	0.38	4.2
55-65kg	0.40	4.4
65-75kg	Standard	Standard
75-85kg	0.44	4.8
85-95kg	0.46	5.0
95-105kg	0.48	5.2
105-115kg	0.50	5.4
115-125kg	0.52	5.6

Yamaha 125 YZ 2006-2015

Standard: Fork: 43.8-455-4.0 / Shock: 59/62-270-46

Rider's weight	Fork springs	Shock spring
45-55kg	0.36	4.2
55-65kg	0.38	4.4
65-75kg	Standard	Standard
75-85kg	0.42	4.8
85-95kg	0.44	5.0
95-105kg	0.46	5.2
105-115kg	0.48	5.4
115-125kg	0.50	5.6

Yamaha 250 YZ

Yamaha 250 YZ 2004

Standard: Fork: 43.2-485-4.2 / Shock: 59/62-270-48

Rider's weight	Fork springs	Shock spring
45-55kg	0.36	4.2
55-65kg	0.38	4.4
65-75kg	0.40	4.6
75-85kg	Standard	Standard
85-95kg	0.44	5.0
95-105kg	0.46	5.2
105-115kg	0.48	5.4
115-125kg	0.50	5.6

Yamaha 250 YZ 2016-2021

Standard: Fork: 43.5-455-44 / Shock: 59/62-270-49

Rider's weight	Fork springs	Shock spring
45-55kg	0.38	4.2
55-65kg	0.40	4.4
65-75kg	0.42	4.6
75-85kg	Standard	Standard
85-95kg	0.46	5.0
95-105kg	0.48	5.2
105-115kg	0.50	5.4
115-125kg		5.6

Yamaha 250 YZ 2005

Standard: Fork: 43.5-470-43 / Shock: 59/62-270-48

Rider's weight	Fork springs	Shock spring
45-55kg	0.36	4.2
55-65kg	0.38	4.4
65-75kg	0.40	4.6
75-85kg	Standard	Standard
85-95kg	0.44	5.0
95-105kg	0.46	5.2
105-115kg	0.48	5.4
115-125kg	0.50	5.6

Yamaha 250 YZ 2022-2024

Standard: Fork: 0.47kg / Shock: 4.9kg

Rider's weight	Fork springs	Shock spring
45-55kg	0.40	4.2
55-65kg	0.42	4.4
65-75kg	0.44	4.6
75-85kg	Standard	Standard
85-95kg	0.48	5.0
95-105kg	0.50	5.2
105-115kg	0.52	5.4
115-125kg		5.6

Yamaha 250 YZ 2006-2015

Standard: Fork: 43.5-455-43 / Shock: 59/62-270-48

Rider's weight	Fork springs	Shock spring
45-55kg	0.36	4.2
55-65kg	0.38	4.4
65-75kg	0.40	4.6
75-85kg	Standard	Standard
85-95kg	0.44	5.0
95-105kg	0.46	5.2
105-115kg	0.48	5.4
115-125kg	0.50	5.6

Yamaha 250 YZF

Yamaha 250 YZF 2005

Standard: Fork: 43.5-470-43 / Sock: 59/62-270-50

Rider's weight	Fork springs	Shock spring
45-55kg	0.36	4.4
55-65kg	0.38	4.6
65-75kg	0.40	4.8
75-85kg	Standard	Standard
85-95kg	0.44	5.2
95-105kg	0.46	5.4
105-115kg	0.48	5.6
115-125kg	0.50	5.8

Yamaha 250 YZF 2009-2013

Standard: Fork: 43.5-455-45 / Shock: 59/62-270-52

Rider's weight	Fork springs	Shock spring
45-55kg	0.38	4.6
55-65kg	0.40	4.8
65-75kg	0.42	5.0
75-85kg	Standard	Standard
85-95kg	0.46	5.4
95-105kg	0.48	5.6
105-115kg	0.50	5.8
115-125kg		6.0

Yamaha 250 YZF 2006-2007

Standard: Fork: 43.5-455-42 / Shock: 59/62-270-48

Rider's weight	Fork springs	Shock spring
45-55kg	0.36	4.2
55-65kg	0.38	4.4
65-75kg	0.40	4.6
75-85kg	Standard	Standard
85-95kg	0.44	5.0
95-105kg	0.46	5.2
105-115kg	0.48	5.4
115-125kg	0.50	5.6

Yamaha 250 YZF 2014-2018

Standard: Fork: 43.5-498-46 / Shock: 64/66-260-54

Rider's weight	Fork springs	Shock spring
45-55kg	0.40	4.8
55-65kg	0.42	5.0
65-75kg	0.44	5.2
75-85kg	Standard	Standard
85-95kg	0.48	5.6
95-105kg	0.50	5.8
105-115kg	0.52	6.0
115-125kg		6.2

Yamaha 250 YZF 2008

Standard: Fork: 43.5-455-44 / Shock: 59/62-270-52

Rider's weight	Fork springs	Shock spring
45-55kg	0.38	4.6
55-65kg	0.40	4.8
65-75kg	0.42	5.0
75-85kg	Standard	Standard
85-95kg	0.46	5.4
95-105kg	0.48	5.6
105-115kg	0.50	5.8
115-125kg		6.0

Yamaha 250 YZF 2019-2024

Standard: Fork: 43.5-498-47 / Shock: 64/66-25-56

Rider's weight	Fork springs	Shock spring
45-55kg		5.0
55-65kg	0.42	5.2
65-75kg	0.44	5.4
75-85kg	Standard	Standard
85-95kg	0.48	5.8
95-105kg	0.50	6.0
105-115kg	0.52	6.2
115-125kg		6.4

Yamaha 450 YZF

Yamaha 450 YZF 2004

Standard: Fork: 43.2-485-4.4 / Shock: 59/62-270-52

Rider's weight	Fork springs	Shock spring
45-55kg	0.38	4.6
55-65kg	0.40	4.8
65-75kg	0.42	5.0
75-85kg	Standard	Standard
85-95kg	0.46	5.4
95-105kg	0.48	5.6
105-115kg	0.50	5.8
115-125kg	0.52	6.0

Yamaha 450 YZF 2010-2011

Standard: Fork: 43.5-470-4.6 / Shock: 64/66-260-56

Rider's weight	Fork springs	Shock spring
45-55kg	0.40	5.0
55-65kg	0.42	5.2
65-75kg	0.44	5.4
75-85kg	Standard	Standard
85-95kg	0.48	5.8
95-105kg	0.50	6.0
105-115kg	0.52	6.2
115-125kg		6.4

Yamaha 450 YZF 2016-2017

Standard: Fork: 43.5-498-4.9 / Shock: 64/66-260-56

Rider's weight	Fork springs	Shock spring
45-55kg	0.44	5.0
55-65kg	0.46	5.2
65-75kg	0.48	5.4
75-85kg	Standard	Standard
85-95kg	0.50	5.8
95-105kg	0.52	6.0
105-115kg	0.52	6.2
115-125kg		6.4

Yamaha 450 YZF 2023-2024

Standard: Fork: 0.51kg / Shock: 5.9kg

Rider's weight	Fork springs	Shock spring
45-55kg	0.44	5.2
55-65kg	0.46	5.4
65-75kg	0.48	5.6
75-85kg	Standard	Standard
85-95kg	0.52	6.0
95-105kg	0.54	6.2
105-115kg	0.56	6.4
115-125kg

Yamaha 450 YZF 2005

Standard: Fork: 43.5-470-4.4 / Shock: 59/62-270-52

Rider's weight	Fork springs	Shock spring
45-55kg	0.38	4.6
55-65kg	0.40	4.8
65-75kg	0.42	5.0
75-85kg	Standard	Standard
85-95kg	0.46	5.4
95-105kg	0.48	5.6
105-115kg	0.50	5.8
115-125kg	0.52	6.0

Yamaha 450 YZF 2012-2013

Standard: Fork: 43.5-470-4.6 / Shock: 64/66-260-54

Rider's weight	Fork springs	Shock spring
45-55kg	0.40	4.8
55-65kg	0.42	5.0
65-75kg	0.44	5.2
75-85kg	Standard	Standard
85-95kg	0.48	5.6
95-105kg	0.50	5.8
105-115kg	0.52	6.0
115-125kg		6.2

Yamaha 450 YZF 2018-2019

Standard: Fork: 43.5-498-5.0 / Shock: 64/66-275-56

Rider's weight	Fork springs	Shock spring
45-55kg	0.44	5.0
55-65kg	0.46	5.2
65-75kg	0.48	5.4
75-85kg	Standard	Standard
85-95kg	0.52	5.8
95-105kg	0.54	6.0
105-115kg	0.54	6.2
115-125kg		6.4

Yamaha 450 YZF 2006-2009

Standard: Fork: 43.8-455-4.6 / Shock: 59/62-270-54

Rider's weight	Fork springs	Shock spring
45-55kg	0.40	4.8
55-65kg	0.42	5.0
65-75kg	0.44	5.2
75-85kg	Standard	Standard
85-95kg	0.48	5.6
95-105kg	0.50	5.8
105-115kg	0.52	6.0
115-125kg		6.2

Yamaha 450 YZF 2014

Standard: Fork: 43.5-498-4.6 / Shock: 64/66-260-56

Rider's weight	Fork springs	Shock spring
45-55kg	0.40	5.0
55-65kg	0.42	5.2
65-75kg	0.44	5.4
75-85kg	Standard	Standard
85-95kg	0.48	5.8
95-105kg	0.50	6.0
105-115kg	0.52	6.2
115-125kg		6.4

Yamaha 450 YZF 2020-2022