Suspension Parts for 2025 KTM 125 SX Motorbikes | Guaranteed Fitment

Discover suspension parts guaranteed to fit the 2025 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 2025 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 Shock Spring Rate

39 N/mm

Bike Type

MX

Ideal Rider Weight

80 kg

Engine Specifications

2 Stroke Engine 124.8 cc

FORKS INFO

Fork Manufacturer

: WP USD 48 mm OD

Fork Dimensions

Compression Nut Torque: 25 in-lb (0.29 kgf-m)
Fork Travel: 295 mm

Fork Features

Twin Chamber Fork: Yes

Fork Oil

Fork Oil Weight: SAE 4
Fork Oil Level: 380cc Cartridge. 200cc in each outer. 180/240 min/max mm
Oil Quanity: 2 Litres required for job

Fork Comments

: Red adjuter right rebound side. Stock Orange seals produce drag after a few hours use.

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: 39 N/mm kg/mm

Shock Comments

: New Shock for 2023

Fitment-Matched Suspension Parts by Category

CHASSIS PARTS

13 Parts

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FORK UPGRADE PARTS

9 Parts

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FORK SEALS & BUSHES

14 Parts

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TOOLS & LUBRICANTS

25 Parts

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All Fitment-Matched Suspension Parts

Browse All 89 Products for KTM 125 SX 2025

Shock Bushing Driver Set

Techtool

Shock Bushing Driver Set

(SKU: 93-118-00)

$33.00
Coming Soon

Showa A Kit Suspension for KTM

Showa Genuine Parts

Showa A Kit Suspension for KTM

Showa Genuine Motorcycle Suspension Parts
(SKU: AKITKTM19)

$13,200.00
Special Order

DRC ENZO | Fork Outer Clamp/Holder | Quick Release

Enzo Racing

DRC ENZO | Fork Outer Clamp/Holder | Quick Release

Developed by Enzo Racing
(SKU: ED59-37-260)

$185.00
Nil Stock

Krooztune KTM 2023-on SXF / XC-F / XC Lowering Linkage - 20/40mm Options

Krooztune

Krooztune KTM 2023-on SXF / XC-F / XC Lowering Linkage - 20/40mm Options

Proudly made in Australia
(SKU: KT-KTM23LL-40)

Seat Height Change (mm): -40

$264.95
Nil Stock

Krooztune WP Xact 23 Alloy Spring Seat

Krooztune

Krooztune WP Xact 23 Alloy Spring Seat

Proudly made in Australia
(SKU: KT-WPSPGSEAT-XCT23)

$154.95
Nil Stock

Krooztune WP XAct Rear Shock 50mm Performance Piston Upgrade Kit

Krooztune

Krooztune WP XAct Rear Shock 50mm Performance Piston Upgrade Kit

Proudly made in Australia
(SKU: KT-WPXACTSK)

$272.68
Coming Soon

Krooztune XACT 2023 Shock Tool Set

Krooztune

Krooztune XACT 2023 Shock Tool Set

Proudly made in Australia
(SKU: KT-XACTTOOL-KIT)

$209.95
Nil Stock

InnTeck Inner Slide Fork Bush WP 48mm **can use 110034800102 **

Innteck

InnTeck Inner Slide Fork Bush WP 48mm can use 110034800102

WP 48mm 47x49x20
(SKU: SKTE48W)

Inside Diameter d (mm): 47.0

Fork Inner Tube Ø d (mm): 48.0

Height H (mm): 20.0

Outside Ø D (mm): 49.0

Wall Thickness (mm): 1.0

$22.00
Nil Stock

InnTeck Outer Guide Fork Bush WP 48mm **can use 110044800102**

Innteck

InnTeck Outer Guide Fork Bush WP 48mm can use 110044800102

WP 48mm 48x52x12
(SKU: SKTI48W)

Inside Diameter d (mm): 48.0

Fork Inner Tube Ø d (mm): 48.0

Height H (mm): 12.0

Outside Ø D (mm): 52.0

Wall Thickness (mm): 2.0

$22.00
Nil Stock

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