Suspension Parts for 2003 YAMAHA YZ426F Motorbikes | Guaranteed Fitment

Discover suspension parts guaranteed to fit the 2003 YAMAHA YZ426F. 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 2003 YAMAHA YZ426F.

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

Stock Shock Spring Rate

5.4

Bike Type

MX

Ideal Rider Weight

75 kg

Engine Specifications

4 Stroke Engine 426 cc

FORKS INFO

Fork Manufacturer

Fork Type: KYB USD 46 mm OD

Fork Dimensions

Compression Nut Torque: 48 in-lb (0.56 kgf-m)
Fork Travel: 279 mm

Fork Features

Twin Chamber Fork: No

Fork Oil

Fork Oil Weight: SAE 2.5
Fork Oil Level: 120 mm

Fork Spring Information

Spring Rate – Claimed: 0.46
Standard Preload: 8 mm

SHOCKS INFO

Shock Manufacturer

Shock Type: KYB 46 mm ID

Shock Dimensions

Nitrogen Pressure: 142 psi
Shock Length (Eye to Eye): 485 mm
Shock Travel: 136 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: 8

Shock Features

Non-rebuildable: No

Fitment-Matched Suspension Parts by Category

FORK SEALS & BUSHES

9 Parts

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FORK COMPRESSION ADJUSTER ASSY

19 Parts

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FORK CARTRIDGE ROD PARTS

5 Parts

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FORK UPPER & LOWER TUBE PARTS

4 Parts

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FORK O-RINGS

12 Parts

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SHOCK UPGRADE PARTS

6 Parts

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SHOCK SPRINGS
Ideal Spring Rate for kg: kg/mm ( N/mm)

3 Parts

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SHOCK SPRING RETAINERS /BUMPERS

7 Parts

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SHOCK BLADDER PARTS

7 Parts

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SHOCK SEAL CASE PARTS

13 Parts

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SHOCK SHAFT PARTS

16 Parts

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SHOCK BODY PARTS

17 Parts

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SHOCK PISTON PARTS

8 Parts

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SHOCK COMP ADJUSTER PARTS

4 Parts

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SUSPENSION LOCKNUTS & BUSHES

21 Parts

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TOOLS & LUBRICANTS

29 Parts

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All Fitment-Matched Suspension Parts

Browse All 131 Products for YAMAHA YZ426F 2003

16 x 12mm Shock Seal Head Bullet

Teknik Motorsport

16 x 12mm Shock Seal Head Bullet

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

$19.95
48 In Stock

46mm 30 degree Angled Shock Bladder Cap

Teknik Motorsport

46mm 30 degree Angled Shock Bladder Cap

Improves nitrogen line clearance and service access
(SKU: 30-001-03)

From $49.50

Colour: Red

$49.50
9 In Stock

Colour: Blue

$49.50
9 In Stock

Colour: Black

$49.50
8 In Stock

All Balls Rear Shock Seal Kit - KX125/250/500/RM/WR250/450

All Balls

All Balls Rear Shock Seal Kit - KX125/250/500/RM/WR250/450

16 ID 46OD
(SKU: 37-1002)

Shock Bore Ø D (mm): 46.0

Shock Shaft Ø D (mm): 16.0

Height H (mm): 23.0

$95.00
4 In Stock

Base valve ff compression dust cap

Kayaba (KYB) Genuine Motorcycle Parts

Base valve ff compression dust cap

Original KYB Japan Motorcycle Suspension Parts
(SKU: 110490000801)

$7.98
6 In Stock

Bearing body rcu collar o-ring YZ/CR

Kayaba (KYB) Genuine Motorcycle Parts

Bearing body rcu collar o-ring YZ/CR

Original KYB Japan Motorcycle Suspension Parts
(SKU: 120020000101)

$4.86
3 In Stock

Bearing body rcu dust seal YZ/GasGas 18-

Kayaba (KYB) Genuine Motorcycle Parts

Bearing body rcu dust seal YZ/GasGas 18-

Original KYB Japan Motorcycle Suspension Parts
(SKU: 120030000101)

$7.23
10 In Stock

Bearing body rcu needle bottom end YZ

Kayaba (KYB) Genuine Motorcycle Parts

Bearing body rcu needle bottom end YZ

Original KYB Japan Motorcycle Suspension Parts
(SKU: 120490000101)

$41.88
7 In Stock

Bearing body rcu stop ring YZ/CR/GasGas

Kayaba (KYB) Genuine Motorcycle Parts

Bearing body rcu stop ring YZ/CR/GasGas

Original KYB Japan Motorcycle Suspension Parts
(SKU: 120040000101)

$4.86
12 In Stock

Bearing collar bottom end

Kayaba (KYB) Genuine Motorcycle Parts

Bearing collar bottom end

Original KYB Japan Motorcycle Suspension Parts
(SKU: 120480000101)

$11.22
4 In Stock

Bearing collar bottom end

Kayaba (KYB) Genuine Motorcycle Parts

Bearing collar bottom end

Original KYB Japan Motorcycle Suspension Parts
(SKU: 120480000201)

$11.22
11 In Stock

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