Longhorn Chassis

Trailing-arm Super Late Model (distinct from 4-link). Numbers below come from public manufacturer sheets or sanction rulebooks. We do not invent missing values.

Wheelbase

VALUE

103–105" series envelope

Super LM series envelope. Longhorn public site sells 2025 Setup Book — full free PDF numbers not extracted this pass

Lucas Oil / Super LM rules + Longhorn product pages

Published geometry & baseline numbers

Architecture

Trailing-arm rear (NOT Rocket/GRT 4-link map)

Longhorn Chassis product architecture + racer.wiki KB

Setup book

Late Model 2025 Setup Book sold by Longhorn (paywalled — not scraped)

longhornchassis.com suspension category

Trailing-arm mount position dominates free mid-corner tendency. Do not apply GRT/Rocket 4-link bar sheets.

Primary sources

· Longhorn Chassis official

· Lucas Oil LM wheelbase 103–105"

Always verify against your exact year chassis and series rulebook. Setup sheets change by year.

LOAD INTO GARAGE

Interactive mid-window card

ELDORA DEMO →KNOXVILLE DEMO → PREFILL CHASSIS

Manufacturer correction

If a number is wrong for a specific year, email the correction with a sheet PDF. We will update grade and sources.

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