LAISAWR250F 2025
Track: ISDE Grândola
← Back to ISDE GrândolaTaken over from the track: Sand · Fast · Technical · dry
Yamaha WR250F 2025 - 75 kg, Intermediate, Neutral, ISDE Grândola
Set this first
Chassis: Fork height in clamps
- Stock value
- 8 mm
- Recommended
- 5 mm
- Change
- 3 mm less than stock
tube protrusion above top clamp
Reason: condition ISDE Grândola
How to test it: Change Fork height in clamps only, nothing else. Then ride the same section or the same number of laps as before and watch whether exactly the behaviour that bothers you changes. If it gets worse or less settled, put the value back.
- Chassis: Fork height in clamps5 mm3 mm less than stockcomputed
- Fork: Rebound9 clicks1 click softer than stockcomputed
- Tire: Front tire pressure0.9 bar0.1 bar less than stockcomputed
- Tire: Rear tire pressure0.9 bar0.1 bar less than stockcomputed
- Shock: Low-speed compression10 clicks1 click harder than stockcomputed
10 confirmed settings available.
Released reference setup, confirmed by an expert · Thinly documented
Referenced (not linked):- Enduro21 2025/26 WR250F long-term test quoting owner's-manual standard positions + Yamaha OEM parts/spec (2025)
Last reviewed: 30 Jul 2026
A starting point to verify on the bike - not a safety guarantee. Change one thing at a time and check on track. How LAISA derives this →
All recommended changes
In order, biggest deviation from the stock value first. Take them one at a time.
- Chassis: Fork height in clamps3 mm less than stock
8 mm5 mmtube protrusion above top clamp
Reason: condition ISDE Grândola
How to test it
Change Fork height in clamps only, nothing else. Then ride the same section or the same number of laps as before and watch whether exactly the behaviour that bothers you changes. If it gets worse or less settled, put the value back.
- Fork: Rebound1 click softer than stock
8 clicks9 clicksclicks out from fully closed
Reason: condition ISDE Grândola
How to test it
Change Rebound only, nothing else. Then ride the same section or the same number of laps as before and watch whether exactly the behaviour that bothers you changes. If it gets worse or less settled, put the value back.
- Tire: Front tire pressure0.1 bar less than stock
1 bar0.9 bar
Reason: condition ISDE Grândola
How to test it
Change Front tire pressure only, nothing else. Then ride the same section or the same number of laps as before and watch whether exactly the behaviour that bothers you changes. If it gets worse or less settled, put the value back.
- Tire: Rear tire pressure0.1 bar less than stock
1 bar0.9 bar
Reason: condition ISDE Grândola
How to test it
Change Rear tire pressure only, nothing else. Then ride the same section or the same number of laps as before and watch whether exactly the behaviour that bothers you changes. If it gets worse or less settled, put the value back.
- Shock: Low-speed compression1 click harder than stock
11 clicks10 clicksclicks out from fully closed
Reason: condition ISDE Grândola
How to test it
Change Low-speed compression only, nothing else. Then ride the same section or the same number of laps as before and watch whether exactly the behaviour that bothers you changes. If it gets worse or less settled, put the value back.
- Shock: Sag5 mm more than stock
95 mm100 mmloaded, rider in gear
Reason: condition ISDE Grândola
How to test it
Change Sag only, nothing else. Then ride the same section or the same number of laps as before and watch whether exactly the behaviour that bothers you changes. If it gets worse or less settled, put the value back.
- Fork: Spring rate0.1 N/mm more than stock
4.5 N/mm4.6 N/mm
Reason: condition ISDE Grândola
How to test it
Change Spring rate only, nothing else. Then ride the same section or the same number of laps as before and watch whether exactly the behaviour that bothers you changes. If it gets worse or less settled, put the value back.
- Transmission: Rear sprocket1 tooth less than stock
50 teeth49 teeth
Reason: condition ISDE Grândola
How to test it
Change Rear sprocket only, nothing else. Then ride the same section or the same number of laps as before and watch whether exactly the behaviour that bothers you changes. If it gets worse or less settled, put the value back.
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.
| BrakeNissin Hydraulic Disc Brakes | ||
| ChainOEM Chain | ||
| ChassisOEM Aluminium Bilateral Beam Frame (250F) | ||
| Fork height in clampstube protrusion above top clamp | 5 mm▼ -3 | computed |
| ClutchOEM Wet Multiplate Clutch | ||
| ECUOEM Engine Management | ||
| ForkKYB SSS 48 mm Coil Fork | ||
| Oil heightfrom top, fully compressed, no spring | 132 mm | OEM |
| Reboundclicks out from fully closed | 9 clicks▲ +1 | computed |
| Spring rate | 4.6 N/mm▲ +0.1 | computed |
| HandlebarOEM Handlebar | ||
| ShockKYB Piggyback Monoshock | ||
| Sagloaded, rider in gear | 100 mm▲ +5 | computed |
| Low-speed compressionclicks out from fully closed | 10 clicks▼ -1 | computed |
| SwingarmOEM Aluminium Swingarm | ||
| TireDunlop Geomax MX33 | ||
| Front tire pressure | 0.9 bar (13.05 psi)▼ -0.1 | computed |
| Rear tire pressure | 0.9 bar (13.05 psi)▼ -0.1 | computed |
| TransmissionOEM Final Drive | ||
| Front sprocket | 13 teeth | OEM |
| Rear sprocket | 49 teeth▼ -1 | computed |
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 baseline for the Yamaha WR250F 2025 at ISDE Grândola shifts 8 of 10 computed settings away from the OEM standard. The biggest shifts: Fork height in clamps 5 mm (-3 vs OEM), Rebound 9 clicks (+1 vs OEM). All values are computed from OEM defaults and your rider and condition factors.
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.
Next steps
Dial in your riding technique
Skills that change how the bike behaves - often the real fix before any clicker.
Explore techniqueMatching protective gear
The right setup is half the job - the other half is protective gear matched to the discipline and conditions.
Gear for these conditionsUpgrades that fit
Optional aftermarket parts for this bike - the setup above comes first, these are next.
Setups for this bike
1 setupsReference setups
Verified factory and expert setups.Related
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Frequently asked questions
How much race sag for the Yamaha WR250F 2025?
As a starting point, 100 mm of race sag at 75 kg rider weight. Measure with a helper and set it via spring preload.
What tire pressure is recommended for the Yamaha WR250F 2025?
As a starting point: 0.9 bar front, 0.9 bar rear - computed for a 75 kg Intermediate rider. Check cold and adjust in small steps by feel.
What gearing (sprockets) does the Yamaha WR250F 2025 run?
As a starting point, 13 teeth front / 49 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.