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KTM

125 SX 2025 - Race

Tuned for Hadsund Motocross Club - adds: mixed

KTM 125 SX 2025 - 75 kg, Intermediate, Neutral, Race - Hadsund Motocross Club

Set this first

There is nothing to change here: the values below come from a released reference and are used as they are - so there is no factory value for them to deviate from.

Key values

16 confirmed settings available.

Source

Released reference setup, confirmed by an expert · Moderately documented

Referenced (not linked):
  • KTM 125 SX MY2025 Owner's Manual, Art. no. 3240041en

Last reviewed: 29 Jul 2026

All technical values

Complete settings, technical data, components, gearing and geometry - including the adjusters that exist on the bike but do not carry a confirmed value yet.

16 confirmed values
BrakeBrembo Hydraulic Disc Brakes (260/220 mm)
ChainOEM Chain
Chain length118 linksverified
ChassisOEM Chromoly Steel Frame
ClutchOEM Wet Multiplate Clutch
ECUKeihin EMS
ForkWP XACT 48mm AER Fork
Compressionclicks out from fully closed12 clicksverified
Reboundclicks out from fully closed12 clicksverified
Air pressure8.6 bar (124.73 psi)verified
HandlebarOEM Handlebar
ShockWP XACT Monoshock
Sagloaded, rider in gear105 mmverified
Static sagwithout load35 mmverified
High-speed compressionclicks out from fully closed1.5 turnsverified
Low-speed compressionclicks out from fully closed15 clicksverified
Preload8 mmverified
Reboundclicks out from fully closed15 clicksverified
Spring rate39 N/mmverified
SwingarmOEM Aluminium Swingarm
TireDunlop Geomax MX34
Front tire pressure1 bar (14.5 psi)verified
Rear tire pressure1 bar (14.5 psi)verified
TransmissionOEM Final Drive
Front sprocket13 teethverified
Rear sprocket50 teethverified
Triple ClampOEM CNC Triple Clamp
Offset22 mmverified

After the ride

Tested a change? Record what happened. LAISA stores it against this bike and this condition. The recommendation above does not adapt to it automatically yet.

About this baseline

For a 75 kg Intermediate rider with a Neutral style, the Race baseline for the KTM 125 SX 2025 at Hadsund Motocross Club shifts none of the 16 computed settings away from the OEM standard. Values come from OEM defaults, your rider and condition factors and 16 verified reference setups.

Value provenance: OEM = manufacturer specification · verified = confirmed by an expert · reviewed = editorially reviewed reference · community = confirmed by the community (median of at least three public setups) · computed = automatically derived by the LAISA engine. Automatically extracted and unconfirmed values never appear on public pages.

No public community setups yet for this bike and condition.

Doesn't feel right on track?

Pick the symptom and we'll show the likely setup causes - and whether it is really a technique thing.

Troubleshoot a handling problem
Riding technique
Vision and line in ruts - corneringControlling the bike off jump faces - jumpingThrottle control on corner exit (MX) - throttle

Matching protective gear

The right setup is half the job - the other half is protective gear matched to the discipline and conditions.

Acerbis Motocross-Helm Airstrike-C
HelmetFits the discipline
Acerbis Motocross-Helm Airstrike-C
ECE 22.06
Acerbis Handschuhe Carbon G 5.0
GlovesFits the discipline
Acerbis Handschuhe Carbon G 5.0
Level 2Level 1
Alpinestars Tech 5 Stiefel Black
BootsFits the discipline
Alpinestars Tech 5 Stiefel Black
EN 13634CE

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Gear for these conditions

Frequently asked questions

What is a good Race setup for the KTM 125 SX 2025?

For a 75 kg Intermediate rider with a Neutral style, the Race baseline for the KTM 125 SX 2025 at Hadsund Motocross Club shifts none of the 16 computed settings away from the OEM standard.

How much race sag for the KTM 125 SX 2025?

As a starting point, 105 mm of race sag at 75 kg rider weight. Measure with a helper and set it via spring preload.

What tire pressure for the KTM 125 SX 2025 in Race conditions?

As a starting point: 1 bar front, 1 bar rear - computed for a 75 kg Intermediate rider. Check cold and adjust in small steps by feel.

What gearing (sprockets) does the KTM 125 SX 2025 run?

As a starting point, 13 teeth front / 50 teeth rear. For more acceleration go larger at the rear (or smaller at the front); for more top speed, the reverse.

Are these values safe to ride?

Baseline values are starting points generated from OEM defaults, rider weight, skill, style and conditions - not safety guarantees. Verify on the bike, adjust step by step and ride within your limits.

Baseline values are starting points generated from OEM defaults, rider weight, skill, style, and condition - or lifted from an expert/verified setup where one exists (see the provenance badge). They are not safety guarantees. Verify on the bike and ride within your limits.