Suspension Parts for 2013 KTM 125 SX Motorbikes | Guaranteed Fitment

Discover suspension parts guaranteed to fit the 2013 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 2013 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

11 Parts

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FORK SEALS & BUSHES

14 Parts

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SHOCK UPGRADE PARTS

7 Parts

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SHOCK SEAL CASE PARTS

7 Parts

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TOOLS & LUBRICANTS

29 Parts

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All Fitment-Matched Suspension Parts

Browse All 86 Products for KTM 125 SX 2013

Zeta Racing Rear Shock Suspension lowering Kit. 46 and 50mm KYB Showa Sachs

DRC Zeta Hardware

Zeta Racing Rear Shock Suspension lowering Kit. 46 and 50mm KYB Showa Sachs

(SKU: ZE56-322)

From $49.95

Colour: Blue
Shock Bore Ø D (mm): 46.0

$49.95
2 In Stock

Colour: Red
Shock Bore Ø D (mm): 50.0

$60.50
6 In Stock

ZETA GAS VALVE FOR REAR SUSPENSION

DRC Zeta Hardware

ZETA GAS VALVE FOR REAR SUSPENSION

(SKU: ZE56-510)

From $82.50

Bladder Cap Style: Dent

$82.50
4 In Stock

Bladder Cap Style: Flat

$82.50
4 In Stock

Bladder Cap Style: Dent

$82.50
3 In Stock

Bladder Cap Style: Flat

$82.50
2 In Stock

KYB Suspension Tools Seal hammer 48mm

Kayaba (KYB) Genuine Motorcycle Parts

KYB Suspension Tools Seal hammer 48mm

Original KYB Motorcycle Suspension Tool
(SKU: 000.0673)

$128.81
Special Order

WP Fork Cap Socket

Motion Pro

WP Fork Cap Socket

For WP Twin Chamber Forks
(SKU: 08-080290)

$54.45
Special Order

Xtrig Preload Adjuster KTM/HVA for LINK SYSTEM

XTRIG

Xtrig Preload Adjuster KTM/HVA for LINK SYSTEM

Quickly adjust shock spring preload
(SKU: 10500001)

Thread Size: MT58 x 2P

$305.00
Special Order

Kayaba (KYB) Genuine Parts Front Fork KYB Oil 01M 1L

Kayaba (KYB) Genuine Motorcycle Parts

Kayaba (KYB) Genuine Parts Front Fork KYB Oil 01M 1L

Original KYB Suspension Lubricants
(SKU: 130010010101)

Pack Size: 1 L Pack

$47.29
Special Order

Kayaba (KYB) Genuine Parts Front Fork KYB Oil 01M 5L

Kayaba (KYB) Genuine Motorcycle Parts

Kayaba (KYB) Genuine Parts Front Fork KYB Oil 01M 5L

Original KYB Suspension Lubricants
(SKU: 130010050101)

Pack Size: 5 L Bottle

$218.48
Nil Stock

Kayaba (KYB) Genuine Parts Front Fork KYB Oil 01M 200L

Kayaba (KYB) Genuine Motorcycle Parts

Kayaba (KYB) Genuine Parts Front Fork KYB Oil 01M 200L

Original KYB Suspension Lubricants
(SKU: 130012000101)

Pack Size: 200 L Drum

$6,250.20
Special Order

Kayaba (KYB) Genuine Parts Rear Shock KYB Oil K2C 1L

Kayaba (KYB) Genuine Motorcycle Parts

Kayaba (KYB) Genuine Parts Rear Shock KYB Oil K2C 1L

Genuine Kayaba Factory Oil
(SKU: 130020010101)

Pack Size: 1 L Pack

$47.29
Special Order

Kayaba (KYB) Genuine Parts Rear Shock KYB Oil K2C 200L

Kayaba (KYB) Genuine Motorcycle Parts

Kayaba (KYB) Genuine Parts Rear Shock KYB Oil K2C 200L

Original KYB Suspension Lubricants
(SKU: 130022000101)

Pack Size: 200 L Drum

$6,250.20
Special Order

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