How it works

A report, not a chatbot.

Every Dezybel report follows the same eight-step pipeline, so you get a consistent, scannable answer instead of a freeform guess.

01

Vehicle fitment

You enter year, make, model, engine, and current exhaust. We anchor every recommendation to what actually bolts onto your bike.

02

Sound target

You choose the character you want — deep or raspy, civil or aggressive, street-safe or track-only — so the report optimizes for your taste, not a generic 'best' list.

03

Source-backed research

The engine searches manufacturer pages, retailers, forums, owner reports, and dB references — never a single YouTube clip — and weighs what it finds.

04

Synthesis

It resolves the evidence into one recommended setup plus budget, balanced, and premium alternatives, each with its tradeoffs.

05

dB range

You get a loudness range with a confidence level and the reasoning behind it — ranges, never fake-precise single numbers.

06

Drone risk

We flag cruise-RPM resonance risk so you don't discover the drone on your first highway ride.

07

Legality risk

Street-safe, verify-locally, risky, or track/off-road only — clear risk language, no false legal guarantees.

08

Install checklist

Fitment notes, whether a tune is needed, and the steps to install it right.