Suspension Parts for 2012 KTM 125 SX Motorbikes | Guaranteed Fitment

Discover suspension parts guaranteed to fit the 2012 KTM 125 SX. 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 2012 KTM 125 SX.

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

48 N/mm

Bike Type

MX

Ideal Rider Weight

80 kg

Engine Specifications

2 Stroke Engine 125 cc

FORKS INFO

Fork Manufacturer

: WP USD 48 mm OD

Fork Dimensions

Compression Nut Torque: 25 in-lb (0.29 kgf-m)
Fork Travel: 283 mm

Fork Features

Preload Adjuster: 0 mm Range
Twin Chamber Fork: Yes

Fork Oil

Fork Oil Weight: SAE 5
Fork Oil Level: 360cc mm
Oil Quanity: 2 Litres

Fork Spring Information

Spring Rate – Claimed: 4.2N
Standard Preload: 8 mm

Fork Comments

: We suggest 22-25 psi bladder pressure

SHOCKS INFO

Shock Manufacturer

WP: 50 mm ID

Shock Dimensions

Nitrogen Pressure: 150 psi
Shock Travel: 110 mm
Shock Shaft Outer Diameter: 18 mm
Standard Sag: 105-115 mm
Shaft Nut Torque: 25 ft-lbs (34 NM)
Shock Oil: 5 Weight
Standard Preload: 7-8mm

Shock Features

Non-rebuildable: No

Shock Spring Information

Spring Rate - Claimed: 48 N/mm kg/mm

Shock Comments

: Spring rates from WP official

Fitment-Matched Suspension Parts by Category

CHASSIS PARTS

3 Parts

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FORK REBUILD KITS

6 Parts

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FORK UPGRADE PARTS

4 Parts

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FORK SPRINGS
Ideal Fork Rate for kg: kg/mm ( N/mm)

3 Parts

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FORK SEALS & BUSHES

14 Parts

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SHOCK UPGRADE PARTS

7 Parts

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

3 Parts

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SHOCK BLADDER PARTS

3 Parts

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SHOCK SEAL CASE PARTS

6 Parts

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TOOLS & LUBRICANTS

26 Parts

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All Fitment-Matched Suspension Parts

Browse All 74 Products for KTM 125 SX 2012

Teknik Fork Springs 43.2 x 485

Teknik Moto Springs

Teknik Fork Springs 43.2 x 485

Made in The Netherlands to ISO 9001
(SKU: 43.2-485)

From $220.00

spring rate: 3.8 N/mm

$220.00
Nil Stock

Notify Me

spring rate: 4.0 N/mm

$220.00
Nil Stock

spring rate: 4.2 N/mm

$220.00
Nil Stock

spring rate: 4.4 N/mm

$220.00
Nil Stock

spring rate: 4.6 N/mm

$220.00
Nil Stock

spring rate: 4.8 N/mm

$220.00
Nil Stock

spring rate: 5.0 N/mm

$220.00
Nil Stock

spring rate: 5.2 N/mm

$220.00
Nil Stock

Xtrig PHDS OEM BETA, SHERCO, KTM 28.6mm M10

XTRIG

Xtrig PHDS OEM BETA, SHERCO, KTM 28.6mm M10

For OEM KTM Gas Gas Husqvarna Beta Sherco
(SKU: 50100008)

Handlebar Diameter D (mm): 28.6

$325.00
1 In Stock

Teknik Shock Spring 62 x 245 (Eibach 882)

Teknik Moto Springs

Teknik Shock Spring 62 x 245 (Eibach 882)

Made in The Netherlands to ISO 9001
(SKU: 62-245)

From $235.00

Colour: White
spring rate: 32.0 N/mm

$235.00
20 In Stock

Colour: White
spring rate: 34.0 N/mm

$235.00
16 In Stock

Colour: White
spring rate: 36.0 N/mm

$235.00
13 In Stock

Colour: White
spring rate: 38.0 N/mm

$235.00
27 In Stock

Colour: White
spring rate: 40.0 N/mm

$235.00
23 In Stock

Colour: White
spring rate: 42.0 N/mm

$235.00
8 In Stock

Colour: White
spring rate: 44.0 N/mm

$235.00
3 In Stock

Colour: White
spring rate: 46.0 N/mm

$235.00
23 In Stock

Colour: White
spring rate: 48.0 N/mm

$235.00
14 In Stock

Colour: White
spring rate: 56.0 N/mm

$235.00
22 In Stock

Colour: White
spring rate: 50.0 N/mm

$235.00
3 In Stock

Colour: White
spring rate: 54.0 N/mm

$235.00
13 In Stock

Colour: White
spring rate: 52.0 N/mm

$235.00
18 In Stock

Teknik Shock Spring 63 x 260 (Eibach 898)

Teknik Moto Springs

Teknik Shock Spring 63 x 260 (Eibach 898)

Made in The Netherlands to ISO 9001
(SKU: 63-260)

From $220.00

Colour: White
spring rate: 44.0 N/mm

$235.00
21 In Stock

Colour: White
spring rate: 46.0 N/mm

$235.00
17 In Stock

Colour: White
spring rate: 48.0 N/mm

$235.00
16 In Stock

Colour: White
spring rate: 50.0 N/mm

$235.00

Colour: White
spring rate: 52.0 N/mm

$235.00
21 In Stock

Colour: White
spring rate: 54.0 N/mm

$235.00
5 In Stock

Colour: White
spring rate: 56.0 N/mm

$235.00
82 In Stock

Colour: White
spring rate: 58.0 N/mm

$235.00
68 In Stock

Colour: White
spring rate: 60.0 N/mm

$235.00
72 In Stock

Colour: White
spring rate: 68.0 N/mm

$220.00
Nil Stock

Colour: White
spring rate: 62.0 N/mm

$235.00
74 In Stock

Colour: White
spring rate: 64.0 N/mm

$235.00
10 In Stock

Colour: White
spring rate: 36.0 N/mm

$235.00
23 In Stock

Colour: White
spring rate: 38.0 N/mm

$235.00
40 In Stock

Colour: White
spring rate: 40.0 N/mm

$235.00
35 In Stock

Colour: White
spring rate: 42.0 N/mm

$235.00
82 In Stock

Colour: White
spring rate: 39.0 N/mm

$220.00
Nil Stock

Colour: White
spring rate: 66.0 N/mm

$220.00
Nil Stock

Colour: White
spring rate: 34.0 N/mm

$235.00
10 In Stock

Colour: White
spring rate: 32.0 N/mm

$235.00
8 In Stock

Colour: White
spring rate: 63.0 N/mm

$235.00
7 In Stock

Colour: White
spring rate: 84.0 N/mm

$220.00
Nil Stock

Xtrig Holeshot 59mm WP 48mm USD OEM Fork

XTRIG

Xtrig Holeshot 59mm WP 48mm USD OEM Fork

Holeshot with one snap-in position
(SKU: 70100008)

Colour: X-Trig Brown

$160.00
1 In Stock

Eibach EMS Moto Rear Shock Spring Kit 62.2 x 265 KTM Husky Gas Gas Linkage 2011-2022

Eibach Suspension Technology

Eibach EMS Moto Rear Shock Spring Kit 62.2 x 265 KTM Husky Gas Gas Linkage 2011-2022

Made in the USA (QS9000) or Germany (ISO16949)
(SKU: 898)

From $249.94

spring rate: 4.1 kg/mm

$249.94
1 In Stock

spring rate: 4.3 kg/mm

$249.94
2 In Stock

spring rate: 4.9 kg/mm

$249.94
1 In Stock

spring rate: 5.2 kg/mm

$249.94
1 In Stock

spring rate: 5.8 kg/mm

$249.94
1 In Stock

spring rate: 6.1 kg/mm

$249.94
1 In Stock

spring rate: 3.9 kg/mm

$249.94
2 In Stock

Eibach EMS Moto Front Fork Spring Kit. 43.4 x 482 WP 48 Closed Chamber KTM SX SXF 2008-2014

Eibach Suspension Technology

Eibach EMS Moto Front Fork Spring Kit. 43.4 x 482 WP 48 Closed Chamber KTM SX SXF 2008-2014

Made in the USA (QS9000) or Germany (ISO16949)
(SKU: 927)

From $249.94

spring rate: 0.54 kg/mm

$249.94
2 In Stock

spring rate: 0.44 kg/mm

$249.94
7 In Stock

spring rate: 0.48 kg/mm

$249.94
10 In Stock

spring rate: 0.50 kg/mm

$249.94
1 In Stock

spring rate: 0.52 kg/mm

$249.94
2 In Stock

spring rate: 0.38 kg/mm

$249.94
Special Order

spring rate: 0.40 kg/mm

$249.94
Special Order

spring rate: 0.42 kg/mm

$249.94
Special Order

spring rate: 0.46 kg/mm

$249.94
7 In Stock

Fork Cap Spanner - Showa/WP

Teknik Tools

Fork Cap Spanner - Showa/WP

Showa Twin Chamber and WP Bladder & Xplor
(SKU: 93-001-00)

$30.80
17 In Stock

KYB / WP Fork Cap Spanner

Teknik Tools

KYB / WP Fork Cap Spanner

2 Piece set for KYB inner/outer and WP
(SKU: 93-003-00)

$77.00
12 In Stock

4 In 1 Fork Cap Spanner Showa KYB WP 46 47 48 49 USD

Teknik Tools

4 In 1 Fork Cap Spanner Showa KYB WP 46 47 48 49 USD

Showa small - Showa large - KYB - WP
(SKU: 93-003-01)

$47.30
23 In Stock

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