Suspension Parts for 1990 KAWASAKI KX125 Motorbikes | Guaranteed Fitment

Discover suspension parts guaranteed to fit the 1990 KAWASAKI KX125. 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 1990 KAWASAKI KX125.

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

0.356

Stock Shock Spring Rate

4.8

Bike Type

MX

Ideal Rider Weight

75 kg

Engine Specifications

2 Stroke Engine 125 cc

FORKS INFO

Fork Manufacturer

: KYB USD 41 mm OD

Fork Dimensions

Compression Nut Torque: 48 in-lb (0.56 kgf-m)

Fork Features

Twin Chamber Fork: No

Fork Oil

Fork Oil Weight: SAE 5
Fork Oil Level: 95 mm
Oil Quanity: 2 Litres

Fork Spring Information

Spring Rate – Claimed: 0.37
Standard Preload: 10 mm

Fork Comments

: Oil level set with the gap between the inner and outer fork tube empty.

SHOCKS INFO

Shock Manufacturer

KYB: 44 mm ID

Shock Dimensions

Nitrogen Pressure: 142 psi
Shock Length (Eye to Eye): 448 mm
Shock Travel: 133 mm
Shock Shaft Outer Diameter: 16 mm
Standard Sag: 95 mm
Shaft Nut Torque: 25 ft-lbs (34 NM)
Shock Oil: 2.5 Weight
Standard Preload: 14

Shock Spring Information

Spring Rate - Claimed: 4.8 kg/mm

Fitment-Matched Suspension Parts by Category

FORK SEALS & BUSHES

7 Parts

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

3 Parts

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SHOCK SEAL CASE PARTS

3 Parts

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SHOCK SHAFT PARTS

3 Parts

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SUSPENSION LOCKNUTS & BUSHES

3 Parts

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TOOLS & LUBRICANTS

18 Parts

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All Fitment-Matched Suspension Parts

Browse All 41 Products for KAWASAKI KX125 1990

M12 x 1.5 Thin Self Locking Steel Insert Fujilok

Fuji Seimitsu Co Ltd

M12 x 1.5 Thin Self Locking Steel Insert Fujilok

Self Locking Steel Insert Fujilok
(SKU: 22-625-00)

$4.98
4053 In Stock

Outer Guide Bush 41 x 12 x 2.0

Teknik Motorsport

Outer Guide Bush 41 x 12 x 2.0

41mm id x 12mm tall x 2.0mm thick
(SKU: 24-508-00)

Inside Diameter d (mm): 41.0

Fork Inner Tube Ø d (mm): 41.0

Height H (mm): 12.0

Outside Ø D (mm): 45.0

Wall Thickness (mm): 2.0

$22.00
3 In Stock

Teknik Schrader Valve Cap

Teknik Schrader Valve Cap

(SKU: 30-652-00)

$3.99
669 In Stock

All Balls Rear Shock Seal Kit- KX125/250/500 1988-92

All Balls

All Balls Rear Shock Seal Kit- KX125/250/500 1988-92

16 ID 44OD
(SKU: 37-1003)

Shock Bore Ø D (mm): 44.0

Shock Shaft Ø D (mm): 16.0

Height H (mm): 21.5

$95.00
2 In Stock

Teknik Shock Spring 59/61 x 270

Teknik Moto Springs

Teknik Shock Spring 59/61 x 270

Made in The Netherlands to ISO 9001
(SKU: 59_61-270)

Colour: White
spring rate: 44.0 N/mm

$235.00
21 In Stock

Colour: White
spring rate: 46.0 N/mm

$235.00
Nil Stock

Colour: White
spring rate: 48.0 N/mm

$235.00
4 In Stock

Colour: White
spring rate: 50.0 N/mm

$235.00
22 In Stock

Colour: White
spring rate: 52.0 N/mm

$235.00
23 In Stock

Colour: White
spring rate: 54.0 N/mm

$235.00
21 In Stock

Colour: White
spring rate: 56.0 N/mm

$235.00
3 In Stock

Colour: White
spring rate: 58.0 N/mm

$235.00
20 In Stock

Colour: White
spring rate: 60.0 N/mm

$235.00
53 In Stock

Colour: White
spring rate: 62.0 N/mm

$235.00
47 In Stock

Colour: White
spring rate: 42.0 N/mm

$235.00
22 In Stock

Eibach EMS Moto Rear Shock Spring Kit 60.6/63.1 x 270 KYB 46 Yamaha YZ WR 125 250 426 450 (59_61-270 and 20-085)

Eibach Suspension Technology

Eibach EMS Moto Rear Shock Spring Kit 60.6/63.1 x 270 KYB 46 Yamaha YZ WR 125 250 426 450 (59_61-270 and 20-085)

Made in the USA (QS9000) or Germany (ISO16949)
(SKU: 892)

spring rate: 4.0 kg/mm

$249.94
2 In Stock

spring rate: 4.2 kg/mm

$249.94
1 In Stock

spring rate: 4.4 kg/mm

$249.94
1 In Stock

spring rate: 4.6 kg/mm

$249.94
1 In Stock

spring rate: 4.8 kg/mm

$249.94
1 In Stock

spring rate: 5.0 kg/mm

$249.94
1 In Stock

spring rate: 5.2 kg/mm

$249.94
2 In Stock

spring rate: 5.4 kg/mm

$249.94
1 In Stock

spring rate: 5.6 kg/mm

$249.94
1 In Stock

spring rate: 5.8 kg/mm

$249.94
2 In Stock

spring rate: 6.0 kg/mm

$249.94
1 In Stock

spring rate: 6.3 kg/mm

$249.94
3 In Stock

spring rate: 6.7 kg/mm

$249.94
1 In Stock

spring rate: 7.1 kg/mm

$249.94
2 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 - 41mm

Techtool

Fork Seal Driver - 41mm

See Part # 93-009-00 for complete set
(SKU: 93-009-10)

$76.95
17 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
18 In Stock

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