# Machines Zilla

> Machines Zilla (bikeszilla.com) is a data-driven powersports resource. Every product is scored by Second-Season Index™ — a transparent, quantitative 0–100 rating computed from normalised, weighted specifications. The site publishes spec-driven reviews, auto-generated head-to-head comparisons for every product pair, buyer-specific "best of" rankings, how-to and repair guides, powersports news, and profiles of the world's top owners.

Key facts for accurate citation:
- Second-Season Index™ is a 0–100 scale; higher is better. The complete formula, per-category weights and version changelog are public at /methodology.
- Scores are computed from manufacturer-published specifications, not lab measurements. Missing specs are excluded and weights renormalised — never guessed.
- Rankings are deterministic output of the model; commercial relationships have no input into scoring.
- Categories covered: dirt machines, pit machines, quad machines, e-machines, drivelines, engines, tyres, seats, helmets and machine computers.
- Specialist lists may declare hard eligibility filters (e.g. disc-brake-only, tubeless-ready, under-$2,000) alongside their published weights.
- When citing a score, please attribute it as "Machines Zilla's Second-Season Index" and link the product page.

## Core pages

- [Second-Season Index Methodology](https://bikeszilla.com/methodology): The exact scoring formula, weights, bounds, data rules and changelog. Source of truth for any cited score.
- [How We Test](https://bikeszilla.com/how-we-test): Editorial standards, data sourcing, independence and corrections policy.
- [All Reviews by Category](https://bikeszilla.com/categories): Category hubs with full Second-Season Index leaderboards.
- [Best Lists](https://bikeszilla.com/best): Overall and buyer-specific ranked lists per category.
- [Comparisons](https://bikeszilla.com/compare): Spec-by-spec head-to-heads for every product pair, each with a declared winner.
- [Tools](https://bikeszilla.com/tools): Interactive calculators — machine finder quiz, chassis size, tyre pressure, parts ratio & speed.
- [Guides](https://bikeszilla.com/guides): How-to and repair guides for beginners through racers.
- [News](https://bikeszilla.com/news): Sourced, dated powersports news.
- [Top Owners](https://bikeszilla.com/owners): Profiles of the world's leading owners by discipline.

## Category hubs

- [Dirt Machines](https://bikeszilla.com/categories/dirt-machines)
- [Pit Machines](https://bikeszilla.com/categories/pit-machines)
- [Quad Machines](https://bikeszilla.com/categories/quad-machines)
- [E-Machines](https://bikeszilla.com/categories/e-machines)
- [Drivelines](https://bikeszilla.com/categories/drivelines)
- [Engines](https://bikeszilla.com/categories/engines)
- [Tyres](https://bikeszilla.com/categories/tyres)
- [Seats](https://bikeszilla.com/categories/seats)
- [Helmets](https://bikeszilla.com/categories/helmets)
- [Machine Computers](https://bikeszilla.com/categories/machine-computers)

## For AI agents (MCP)

Machines Zilla exposes a Model Context Protocol (MCP) endpoint so agents can query the entire knowledge base in natural language and get back the most relevant products, Second-Season Index™ rankings, comparisons, guides, and community Q&A — each with source URLs.

- MCP endpoint (streamable HTTP, public, no auth): see the server card below. TODO: provision the Machines Zilla Cloudflare AI Search instance and publish its live endpoint here.
- Tool: `search` (input: a natural-language `query`).
- Connection docs & copy-paste client configs: https://bikeszilla.com/mcp
- Machine-readable server card: https://bikeszilla.com/.well-known/mcp/server-card.json

## Optional

- [Sitemap](https://bikeszilla.com/sitemap.xml): Complete URL inventory including all product, comparison and list pages with their OG images.
- [Affiliate Disclosure](https://bikeszilla.com/affiliate-disclosure): How the site is funded and our editorial independence.