Suspension Parts for 2020 YAMAHA YZ450FX Motorbikes | Guaranteed Fitment

Christmas opening hours. Last shipping day Wednesday 24th December. All orders placed over the break will ship Monday 5th January.

Discover suspension parts guaranteed to fit the 2020 YAMAHA YZ450FX. 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 2020 YAMAHA YZ450FX.

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

0.46

Bike Type

MX

Ideal Rider Weight

75 kg

Engine Specifications

4 Stroke Engine 449 cc

FORKS INFO

Fork Manufacturer

: KYB USD 48 mm OD

Fork Dimensions

Compression Nut Torque: 48 in-lb (0.56 kgf-m)
Fork Travel: 300 mm

Fork Features

Twin Chamber Fork: Yes

Fork Oil

Fork Oil Weight: SAE 2.5
Fork Oil Level: 360cc mm
Oil Quanity: 2 Litres

Fork Spring Information

Spring Rate – Claimed: 0.46
Standard Preload: 3 mm

Fork Comments

: Check floating piston for cracking

SHOCKS INFO

Shock Manufacturer

KYB: 50 mm ID

Shock Dimensions

Nitrogen Pressure: 142 psi
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: 10
Wheel Travel: 300 mm

Shock Features

Non-rebuildable: No

Shock Comments

: Replace alloy shock collars with steel if binding.

Fitment-Matched Suspension Parts by Category

FORK SEALS & BUSHES

17 Parts

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FORK COMPRESSION ADJUSTER ASSY

30 Parts

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FORK UPPER & LOWER TUBE PARTS

18 Parts

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FORK O-RINGS

18 Parts

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SHOCK SHAFT PARTS

17 Parts

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SHOCK BODY PARTS

18 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 227 Products for YAMAHA YZ450FX 2020

Fork Seal Driver - 48mm

Techtool

Fork Seal Driver - 48mm

See Part # 93-009-00 for complete set
(SKU: 93-009-50)

$87.95
22 In Stock

24mm Shock Compression Adjuster Socket Tool

Techtool

24mm Shock Compression Adjuster Socket Tool

For KYB & Showa Shocks
(SKU: 93-019-00)

$30.00
23 In Stock

24mm Shock Compression Adjuster Socket Tool - with 24mm Hex

Techtool

24mm Shock Compression Adjuster Socket Tool - with 24mm Hex

For KYB & Showa Shocks
(SKU: 93-019-02)

$27.50
12 In Stock

KYB Inner Fork Cap Tool

Teknik Tools

KYB Inner Fork Cap Tool

(SKU: 93-023-00)

$41.25
6 In Stock

16 x 12mm Shock Seal Head Bullet

Teknik Tools

16 x 12mm Shock Seal Head Bullet

Motorcycle Suspension Tools
(SKU: 93-025-00)

$19.95
25 In Stock

Shock Seal Head Bullet 5Pc Kit

Techtool

Shock Seal Head Bullet 5Pc Kit

Shock Seal Head Bullet 5pc Kit
(SKU: 93-031-00)

$76.95
17 In Stock

Techtool Fork Tube Tool & Cartridge Rod Holding Plate

Techtool

Techtool Fork Tube Tool & Cartridge Rod Holding Plate

For KYB, Showa & WP Twin or Open Chamber Forks
(SKU: 93-032-00)

$220.00
18 In Stock

Shock Bushing Driver Set

Techtool

Shock Bushing Driver Set

(SKU: 93-118-00)

$33.00
7 In Stock

Eibach EMS Moto Front Fork Spring Kit. 43.7 x 499 (43.5-497) Yamaha YZF WR 2018 on *Discontinued** use 904 series

Eibach Suspension Technology

Eibach EMS Moto Front Fork Spring Kit. 43.7 x 499 (43.5-497) Yamaha YZF WR 2018 on *Discontinued** use 904 series

Made in the USA (QS9000) or Germany (ISO16949)
(SKU: 963)

spring rate: 0.42 kg/mm

$249.94
Nil Stock

spring rate: 0.54 kg/mm

$249.94
Nil Stock

spring rate: 0.56 kg/mm

$249.94
1 In Stock

DRC FORK SEAL DRIVER SET | UNIVERSAL | 40-50mm

DRC Zeta Hardware

DRC FORK SEAL DRIVER SET | UNIVERSAL | 40-50mm

DRC Fork Seal Driver Tool Set
(SKU: D59-26-005)

$139.99
5 In Stock

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