KTM 640 LC4 Hard Enduro 2006

Calculate Spring Rates

Rider Weight

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).


SKF Sealing

SKF WP Fork Seal Kit 43mm (Dual Comp)

Requires 2 kits for complete fork service.
(SKU: SKF-DUAL-43W)
Colour:   Green/Orange
Seal Outer Ø D (mm):   53.20
Seal Height H (mm):   9.5
Seal Wiper Outside Ø D1 (mm):   53.70
Seal Wiper Height H1 (mm):   5.8
Fork Inner Tube Ø d (mm):   43.0
$62.95
10 In Stock


Innteck

InnTeck Inner Slide Fork Bush WP 43mm

WP 43mm 42x44x20
(SKU: SKTE43W)
Inside Diameter d (mm):   42.0
Fork Inner Tube Ø d (mm):   43.0
Height H (mm):   20.0
Outside Ø D (mm):   44.0
Wall Thickness (mm):   1.0
$14.99
2 In Stock

Innteck

InnTeck Outer Guide Fork Bush WP 43mm

WP 43mm 43x47x12
(SKU: SKTI43W)
Inside Diameter d (mm):   43.0
Fork Inner Tube Ø d (mm):   43.0
Height H (mm):   12.0
Outside Ø D (mm):   47.0
Wall Thickness (mm):   2.0
$14.99
7 In Stock

Innteck

InnTeck Outer Guide Fork Bush WP 43mm

VECCHIE WP 43mm 00-02 43x47x20
(SKU: SKTI43WO)
Inside Diameter d (mm):   43.0
Fork Inner Tube Ø d (mm):   43.0
Height H (mm):   20.0
Outside Ø D (mm):   47.0
Wall Thickness (mm):   2.0
$14.99
2 In Stock



HiCalibre

HiCalibre Shock Spring 60 x 260 Sachs 46 and 50

60mm id x 260mm free length
(SKU: 20-073)


Factory Racing

Bump Stop Rubber 14 x 43 x 39

14mm id x 43mm od x 39mm tall - Showa
(SKU: 22-200-00)
Shock Shaft Ø D (mm):   14.0
Height H (mm):   39.0
Outside Ø D (mm):   43.0
$22.00
157 In Stock