LAISAYZ450F 2025
Track: Aonia Pass Motocross
← Back to Aonia Pass MotocrossTaken over from the track: Loam · Fast · Jumps · dry
Yamaha YZ450F 2025 - 75 kg, Intermediate, Neutral, Aonia Pass Motocross
Set this first
Fork: Compression
- Stock value
- 10 clicks
- Recommended
- 6 clicks
- Change
- 4 clicks harder than stock
clicks out from fully closed
Reason: condition Aonia Pass Motocross
How to test it: Change 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.
- Fork: Compression6 clicks4 clicks harder than stockcomputed
- Shock: Low-speed compression6 clicks4 clicks harder than stockcomputed
- Fork: Rebound12 clicks2 clicks softer than stockcomputed
- Shock: High-speed compression1.5 turns0.3 turns harder than stockcomputed
- Shock: Rebound16 clicks2 clicks softer than stockcomputed
17 confirmed settings available.
Released reference setup, confirmed by an expert · Moderately documented
Referenced (not linked):- 2025 Yamaha YZ450F owner's manual standard settings, cross-checked vs Yamaha 2025 spec + PulpMX (stock HSC 1-1/4) + JBI/Keefer/MXA 2025 baselines (2025)
One released reference records no document.
Last reviewed: 29 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.
- Fork: Compression4 clicks harder than stock
10 clicks6 clicksclicks out from fully closed
Reason: condition Aonia Pass Motocross
How to test it
Change 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: Low-speed compression4 clicks harder than stock
10 clicks6 clicksclicks out from fully closed
Reason: condition Aonia Pass Motocross
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.
- Fork: Rebound2 clicks softer than stock
10 clicks12 clicksclicks out from fully closed
Reason: condition Aonia Pass Motocross
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.
- Shock: High-speed compression0.3 turns harder than stock
1.8 turns1.5 turnsclicks out from fully closed
How to test it
Change High-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: Rebound2 clicks softer than stock
14 clicks16 clicksclicks out from fully closed
Reason: condition Aonia Pass Motocross
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.
- Transmission: Rear sprocket1 tooth less than stock
49 teeth48 teeth
Reason: condition Aonia Pass Motocross
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 | ||
| Chain length | 114 links | OEM |
| ChassisOEM Aluminium Bilateral Beam Frame | ||
| Fork height in clampstube protrusion above top clamp | 2 ring | OEM |
| ClutchOEM Wet Multiplate Clutch | ||
| ECUOEM Engine Management | ||
| ForkKYB SSS 48 mm Coil Fork | ||
| Compressionclicks out from fully closed | 6 clicks▼ -4 | computed |
| Reboundclicks out from fully closed | 12 clicks▲ +2 | computed |
| Static sagwithout load | 8 mm | OEM |
| Spring rate | 5 N/mm | OEM |
| HandlebarOEM Handlebar | ||
| ShockKYB Piggyback Monoshock | ||
| Sagloaded, rider in gear | 105 mm | OEM |
| Static sagwithout load | 35 mm | OEM |
| High-speed compressionclicks out from fully closed | 1.5 turns▼ -0.3 | computed |
| Low-speed compressionclicks out from fully closed | 6 clicks▼ -4 | computed |
| Preload | 8 mm | OEM |
| Reboundclicks out from fully closed | 16 clicks▲ +2 | computed |
| Spring rate | 54 N/mm | OEM |
| SwingarmOEM Aluminium Swingarm | ||
| TireDunlop Geomax MX33 | ||
| Front tire pressure | 1 bar (14.5 psi) | OEM |
| Rear tire pressure | 1 bar (14.5 psi) | OEM |
| TransmissionOEM Final Drive | ||
| Front sprocket | 13 teeth | OEM |
| Rear sprocket | 48 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 YZ450F 2025 at Aonia Pass Motocross shifts 6 of 17 computed settings away from the OEM standard. The biggest shifts: Compression 6 clicks (-4 vs OEM), Low-speed compression 6 clicks (-4 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
2 setupsReference setups
Verified factory and expert setups.Related
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Frequently asked questions
How much race sag for the Yamaha YZ450F 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 is recommended for the Yamaha YZ450F 2025?
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 Yamaha YZ450F 2025 run?
As a starting point, 13 teeth front / 48 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.