Suspension Parts for 2021 YAMAHA WR450F Motorbikes | Guaranteed Fitment

Discover suspension parts guaranteed to fit the 2021 YAMAHA WR450F. Every product in this category has been validated against year-specific fork and shock specifications to ensure true compatibility.
You’ll find fork components, shock parts, shims, upgrade kits, complete suspension systems, chassis components, and the tools and fluids required for accurate servicing - all aligned with the suspension setup of the 2021 YAMAHA WR450F.

Use this page as a reliable reference when maintaining, rebuilding, or upgrading your bike’s suspension.

Bike-Specific Suspension Specifications & Setup Information

CALCULATE SPRING RATES

This is a recommendation only please consult your manual

Ideal Fork Rate:

kg/mm ( N/mm)

Ideal Shock Rate:

kg/mm ( N/mm)

BIKE DETAILS

Stock Fork Spring Rate

0.48

Stock Shock Spring Rate

5.6kg

Bike Type

OFFROAD

Ideal Rider Weight

75 kg

Engine Specifications

4 Stroke Engine 450 cc

FORKS INFO

Fork Manufacturer

Fork Type: KYB USD 48 mm OD

Fork Dimensions

Compression Nut Torque: 48 in-lb (0.56 kgf-m)
Fork Travel: 315 mm

Fork Features

Preload Adjuster: 7 mm Range
Twin Chamber Fork: Yes

Fork Oil

Fork Oil Weight: SAE 2.5
Oil Quanity: 200cc/350cc

Fork Spring Information

Spring Rate – Claimed: 0.48
Standard Preload: 7 mm

Fork Comments

: Check floating piston for cracking

SHOCKS INFO

Shock Manufacturer

Shock Type: KYB 50 mm ID

Shock Dimensions

Nitrogen Pressure: 142 psi
Shock Length (Eye to Eye): 464 mm
Shock Travel: 120 mm
Shock Shaft Outer Diameter: 16 mm
Standard Sag: 103 mm
Shaft Nut Torque: 25 ft-lbs (34 NM)
Shock Oil: 2.5 Weight
Standard Preload: 15
Wheel Travel: 318 mm

Shock Features

Non-rebuildable: No

Shock Comments

: Replace alloy shock collars with steel if binding.

Fitment-Matched Suspension Parts by Category

FORK COMPRESSION ADJUSTER ASSY

30 Parts

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SUSPENSION LOCKNUTS & BUSHES

27 Parts

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TOOLS & LUBRICANTS

41 Parts

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All Fitment-Matched Suspension Parts

Browse All 220 Products for YAMAHA WR450F 2021

KYB Factory Kit Fork YZF250/450 14-26

KYB Factory Kit Fork YZF250/450 14-26

Genuine KYB Factory Race Parts
(SKU: 162019000501)

$6,534.00
0% OFF RRP $6,563.70
Custom Order

KYB Genuine Single Linear Rate Fork Spring - 44od x 497mm

Kayaba (KYB) Genuine Motorcycle Parts

KYB Genuine Single Linear Rate Fork Spring - 44od x 497mm

Original KYB Motorcycle Suspension Spring
(SKU: 11005-44-497)

From $159.72

Spring Rate: 4.8 N/mm

$159.72
8% OFF RRP $172.79 Special Order

Order placed with KYB every week. 3-4 week delivery if in stock at KYB.

Order placed with KYB every week. 3-4 week delivery if in stock at KYB.

Spring Rate: 5.0 N/mm

$159.72
8% OFF RRP $172.79 Special Order

Spring Rate: 5.2 N/mm

$159.72
8% OFF RRP $172.79 Special Order

Spring Rate: 4.0 N/mm

$159.72
8% OFF RRP $172.79 Special Order

Spring Rate: 4.2 N/mm

$159.72
8% OFF RRP $172.79 Special Order

Spring Rate: 4.4 N/mm

$159.72
8% OFF RRP $172.79 Special Order

KYB Inner Fork Cap Tool

Teknik Motorsport

KYB Inner Fork Cap Tool

(SKU: 93-023-00)

$41.25
Nil Stock

Lainer PDS-2 Progressive Damping System – KYB 48mm Forks

Lainer Suspension

Lainer PDS-2 Progressive Damping System – KYB 48mm Forks

Adjustable progressive damping and bottoming control for
(SKU: PDS_SYS2-118.5KYB-ADP43)

$579.94
Special Order

Kayaba (KYB) Genuine Motorcycle Parts

O-ring

Original KYB Japan Motorcycle Suspension Parts
(SKU: 150290000701)

$4.86
Special Order

Outertube comp YZ250F12-,YZ450F10-13/18-

Kayaba (KYB) Genuine Motorcycle Parts

Outertube comp YZ250F12-,YZ450F10-13/18-

Original KYB Japan Motorcycle Suspension Parts
(SKU: 110754803201)

Outside Ø D (mm): 54.0

Length L1 (mm): 566.0

Outside Ø D1 (mm): 59.2

$641.85
Coming Soon

Packing Base valve YZ65 19-, YZ85 02-15, CRF450

Kayaba (KYB) Genuine Motorcycle Parts

Packing Base valve YZ65 19-, YZ85 02-15, CRF450

Original KYB Japan Motorcycle Suspension Parts
(SKU: 110810000201)

$6.97
Coming Soon

Piston rod comp rcu YZF 450 18-23/YZF250 19-23

Kayaba (KYB) Genuine Motorcycle Parts

Piston rod comp rcu YZF 450 18-23/YZF250 19-23

Original KYB Japan Motorcycle Suspension Parts
(SKU: 120350003001)

$498.52
Special Order

Piston rod ff compression KX250F 20-,YZF10-,YZ15-

Kayaba (KYB) Genuine Motorcycle Parts

Piston rod ff compression KX250F 20-,YZF10-,YZ15-

Original KYB Japan Motorcycle Suspension Parts
(SKU: 110330000401)

$146.07
Special Order

Piston rod rcu STD assembled YZF450 18-23 / YZF250 19-23

Kayaba (KYB) Genuine Motorcycle Parts

Piston rod rcu STD assembled YZF450 18-23 / YZF250 19-23

Original KYB Japan Motorcycle Suspension Parts
(SKU: 120380015601)

$311.58
Special Order

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