1000MT-X — rider 75 kg + 30 kg of luggage
Total load = 75 + 30 = 105 kg — inside the charted range (75–190 kg).
The chart gives 11.5 mm at 75 kg and 9.5 mm at 115 kg, so: 11.5 + (105−75)/(115−75) × (9.5 − 11.5)
= 10 mm of front preload
How the suspension calculator works
A transparent, documented method: the calculator reads the official factory charts and interpolates them to your real riding load — it never invents numbers.
The method at a glance
Decision treeFrom your load to the displayed settings, here is the path the calculator follows — the model determines the method, and the result always comes from the factory data.
Three worked examples
The same three cases as the decision tree, with real figures (1000MT-X front spring preload, 650MT front preload).
1000MT-X — two riders + 40 kg of luggage
Total load = 90 + 80 + 40 = 210 kg — beyond the heaviest charted condition (190 kg).
No extrapolation: the calculator holds the 190 kg value. As 210 kg stays under the 240 kg factory maximum, no overload warning is shown.
= 5.5 mm of front preload
650MT — no factory chart, rider 95 kg solo
Total load = 95 kg, i.e. +20 kg above the 75 kg factory baseline.
No chart for this model: start from the factory baseline (front preload 5 turns) and adjust it linearly with the +20 kg.
= 6 turns of front preload
Try it: settings vs load
InteractivePick a model and a scenario, then drag the load cursor: every adjuster's curve and its big value update live — exactly what the calculator would output at that total weight.
Motorcycle model
Riding scenario
Total load
The scenario chooses which weights count; the curves depend only on their total. Values are a starting point; always confirm with a sag check.
The calculation method, step by step
Method- Two methods, depending on the model
- When the official owner's manual contains a suspension chart, the calculator uses it directly — it does not invent its own numbers. When no chart exists, it falls back to a documented estimate. Which path applies is shown for every model on the Factory settings page.
- Models with a factory chart: direct interpolation
- The factory chart gives the recommended settings for a few load conditions — typically one rider (75 kg), rider + luggage, two riders, and two riders + luggage. The calculator adds up the weights for your scenario (rider, pillion, luggage), then interpolates linearly between the two surrounding load conditions. At a charted load it returns the manual's exact value; between two it blends them in proportion. Example — 1000MT-X front preload: the manual lists 11.5 mm at 75 kg and 9.5 mm at 115 kg, so at 105 kg the calculator returns 11.5 + (105−75)/(115−75) × (9.5 − 11.5) = 10 mm. Results are rounded to a real adjuster step (whole clicks, half-steps for mm or turns).
- Units come straight from the manual
- Each value keeps the exact unit the manufacturer uses, which varies by model and even by axle: spring preload can be in millimetres, turns or clicks (the 1000MT-X front fork is in mm, its rear shock in clicks), while compression and rebound are in clicks. The Factory settings page shows the same units.
- N/A values
- When an element has no such adjuster — or the manual gives no value for it, like a non-adjustable fork — the calculator shows N/A instead of inventing a number.
- Beyond the factory chart
- Below the lightest or above the heaviest charted load, the calculator holds the nearest charted value rather than extrapolating blindly. If your total weight exceeds the model's factory maximum load, a warning banner is shown — treat the figures as a rough starting point and confirm with a sag check.
- Models without a factory chart: documented estimate
- A few models have no detailed table in the manual. For those, the calculator starts from a factory baseline and adjusts it gently with load (a linear estimate). These models are explicitly flagged as estimates on the Factory settings page, since they are not backed by an official per-load chart.
- Limits of the method
- Even the factory chart covers only a handful of load conditions, and the ideal setup also depends on rider height, riding style, road surface and tyre choice. The result is a transparent, documented starting point — not a substitute for on-bike testing and a professional sag measurement. The source behind every value is listed on the Factory settings page and the linked manuals.