Bike Picker

About our data

Dirt BikesSupermotoElectric

Where our data comes from

Every bike on Bike Picker has its specs cross-referenced against multiple sources. Here's the tiered methodology, ranked by how authoritative each source is:

Manufacturer official US sites

Our primary source for MSRP, displacement, bore & stroke, compression, fuel system, transmission, suspension travel, brakes, tires, wheelbase, seat height, fuel capacity, and weight. We pull directly from:

Authoritative third-party spec databases

Used when manufacturer sites lack pricing or full specs:

Dyno test publications (HP/torque)

Manufacturers rarely publish HP for dirt bikes, so we rely on independent rear-wheel dyno tests:

Reviews and previews (new/announced bikes)

For bikes where specs aren't fully published yet:

Where data still has confidence gaps

Two-stroke horsepower is the main spec we still estimate rather than verify directly: manufacturers don't publish horsepower figures for two-strokes, so we use independent Dirt Rider dyno results where available and class-norm estimates otherwise.

How we handle

Wet weight

Manufacturers use different weight conventions. Some publish dry weight, some "kerb weight without fuel", others full wet weight. For consistency we convert everything to wet weight with full fuel. Where the manufacturer only publishes dry weight, we add ~6 lb per gallon of fuel tank capacity to estimate wet weight.

Horsepower (crank vs. wheel)

The ADV / Dual Sport page uses manufacturer crank HP figures (what the engine produces before drivetrain loss). The dirt bike page uses rear-wheel dyno HP figures from Dirt Rider's Dynojet 250i (typically ~15% lower than crank). The two numbers aren't directly cross-comparable across pages, but within each page the figures are consistent.

New & announced models

We monitor manufacturer announcements daily and add new model-year bikes as quickly as we can verify them. Because we'd rather list a model early than leave it out, a freshly added bike may occasionally have a few specs still pending. We fill those in as soon as authoritative sources confirm the numbers.

Updates & Additions

If you see something incorrect, missing or would like something added, please join my Discord (opens in a new tab) and message me directly. I'll fix it as soon as I can.