Jeep Wrangler YJ · 1987–1995

The Square-Headlight Wrangler.

AMC's last Jeep and the start of the modern Wrangler line — leaf-sprung front and rear, AMC inline-six power, and the cleanest body lines the Wrangler ever wore. Cheap to find, simple to fix, and still a serious trail rig with the right setup.

Early coverage. Trail Manual is building the Jeep platforms out first — the Cherokee XJ library runs 340+ guides. Wrangler YJ has a starter set of guides today; deeper coverage is on the way. See the XJ library for where this is headed.

1987–1995 Solid front & rear axles 2.5L I4 / 4.2L 258 / 4.0L I6 Dana 30 · D35/D44

01 / Tools

Built for your rig

4 tools

Lift & Tire Matrix

What tire fits your lift height — rubbing notes, required mods, and gear ratio recommendations.

The reference library. Every DIY procedure for this platform, filtered to your trim, year, and engine.

5+ guidesBrowse

Mileage-driven service schedule for your trim. Oil, diffs, transfer case, and more.

Coming soonSoon

Diagnose the cause in 8 questions. Track-bar, ball joints, tire balance — find it before it finds you.

02 / Learn

Read and watch

Latest · All posts · Workshop · Channels

Latest blog

When to re-gear your axles

The math behind the change — and the feeling that tells you it's time.

All posts

Read the blog

Every post — tools, mod tests, trail reports. Sorted by date, filterable.

Workshop

Shop technique

Torque, seized bolts, brake bleed — the foundations every DIYer needs.

Channels

YouTubers we trust

Honest builders, working trucks. No sponsored fluff, no thumbnail screaming.