Right part. Right fluid. Right torque.
Per-bike consumable specs — oil, filters, pads, chain, plugs and fluids — with every fact sourced and dated. Then verify us against your owner's manual.
The Oil Check
Pick your bike, pick how you ride, and get a plain verdict on any oil — safe, conditional, or no — against what your manual actually asks for. JASO class, viscosity range, and the wet-clutch rules, checked for you.
Thirty sport platforms, sheeted
Cross-linked with unstocked.bike both ways — Unstocked answers what to bolt on, TOSPEC answers what goes in it.
Aprilia
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Every fact wears its receipt
Every number on the site wears its receipt. Each fact carries a confidence tier, the source it came from with a page or part reference, the date we last checked it, and a flag when sources disagree. Click a citation and you land on the manual or catalogue it came from.
- OEM-verified — Straight from the owner's manual or a manufacturer registry.
- Cross-referenced — Two independent catalogues or a manufacturer parts page agree.
- Community — Widely reported and plausible, but no primary source yet.
- Unverified — A known gap. Shown in the open, never guessed at.
A real chip from the BMW S1000RR oil spec:
OEM-verifiedBMW S1000RR 2020 Rider's Manual p.238 (opens in new tab)checked 2026-07-192 source conflictsGuides
The maintenance questions worth reading before you buy — oil chemistry, pad compounds, brake fluid, chain conversions, and your warranty rights.