Suspension Parts for 2003 KTM 640 LC4 Hard Enduro Motorbikes | Guaranteed Fitment

Discover suspension parts guaranteed to fit the 2003 KTM 640 LC4 Hard Enduro. 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 KTM 640 LC4 Hard Enduro.

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

0.44

Stock Shock Spring Rate

6.6

Bike Type

OFFROAD

Ideal Rider Weight

70 kg

Engine Specifications

4 Stroke Engine 628 cc

FORKS INFO

Fork Manufacturer

: WP USD 43 mm OD

Fork Dimensions

Compression Nut Torque: 25 in-lb (0.29 kgf-m)

Fork Features

Twin Chamber Fork: No

Fork Oil

Fork Oil Weight: SAE 5
Fork Oil Level: 120 mm
Oil Quanity: 2 Litres

Fork Spring Information

Standard Preload: 15 mm

Fork Comments

: Check rebound adjuster needles. Bead blast. Replace O rings. Check Mid Valve shims often bent.

SHOCKS INFO

Shock Manufacturer

WP: 46 mm ID

Shock Dimensions

Nitrogen Pressure: 150 psi
Shock Length (Eye to Eye): 410 mm
Shock Travel: 111 mm
Shock Shaft Outer Diameter: 14 mm
Standard Sag: 85 mm
Shaft Nut Torque: 25 ft-lbs (34 NM)
Shock Oil: 5 Weight

Shock Features

Non-rebuildable: No

Shock Comments

: Compression adjuster is opposite (Counterclockwise is stiffer).

Fitment-Matched Suspension Parts by Category

FORK SEALS & BUSHES

6 Parts

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

2 Parts

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SHOCK BLADDER PARTS

3 Parts

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SHOCK SEAL CASE PARTS

2 Parts

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TOOLS & LUBRICANTS

11 Parts

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All Fitment-Matched Suspension Parts

Browse All 30 Products for KTM 640 LC4 Hard Enduro 2003

Fork Oil Level Tool

Techtool

Fork Oil Level Tool

Motorcycle Suspension Tools
(SKU: 93-002-00)

$39.93
17 In Stock

Fork Bleeder Tool Set

Techtool

Fork Bleeder Tool Set

Motorcycle Suspension Tools
(SKU: 93-007-00)

$110.00
28 In Stock

Techtool Motorcycle Fork Seal Driver Kit 9pc Kit

Techtool

Techtool Motorcycle Fork Seal Driver Kit 9pc Kit

35/36-39-41-43-45-46/47-48-49/50-54mm
(SKU: 93-009-00)

$470.58
3 In Stock

Fork Seal Driver - 43mm

Techtool

Fork Seal Driver - 43mm

See Part # 93-009-00 for complete set
(SKU: 93-009-20)

$76.95
19 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

WP Reservoir Removal Tool - 2 Pin Type

Techtool

WP Reservoir Removal Tool - 2 Pin Type

Fits many WP Shocks from 1984 on
(SKU: 93-046-00)

$55.00
16 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

KoubaLink Lowering Link KTM 400/620/625/640 LC4 -44.5 Orange

KoubaLink

KoubaLink Lowering Link KTM 400/620/625/640 LC4 -44.5 Orange

Enhanced Control with Expert Engineering
(SKU: KOUBALINK-KTM3)

Colour: Orange

Seat Height Change (mm): -44.5

$270.00
2 In Stock

Krooztune XPLOR Clamp Tool 6 and 12mm

Krooztune

Krooztune XPLOR Clamp Tool 6 and 12mm

Proudly made in Australia
(SKU: KT-XPLORFF-TL)

$31.96
2 In Stock

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