1990–1995 Toyota 4Runner · Air & Recovery

Air & Recovery

Air down for traction, air up to drive home. The compressors and hose kits that make that a two-minute job.

Airing down is the cheapest traction upgrade there is, and it only works if you can air back up. Everything here is universal — it fits any truck — but it's chosen for what a 4Runner actually needs on a trail: enough CFM to do four 33s without a coffee break, and hose that reaches the far tire. The guides explain duty cycle, CFM, and onboard versus portable.

Parts

Guides

Compressor Duty Cycle Explained (And Why It Matters More Than You Think)Duty cycle is how long a compressor can run before it needs to cool down. Here's what the percentages mean and why a 50% unit frustrates you on four t Onboard Air for a 2nd Gen 4Runner: Single, Twin, or Portable?Choosing between a single compressor, a twin, and a portable hard-case kit for a 90-95 4Runner — what each one is actually good at and who should buy Onboard vs Portable Air Compressor: Which Should You Buy?Mounted onboard air or a portable case kit? The honest tradeoffs on install, cost, air lockers, and whether you plan to keep the truck.Full-Length Roof Rack for 2nd Gen 4Runner: Is It Worth It?Why a full-length rack changes what a 2nd gen 4Runner can do — rooftop tents, recovery gear, and the mounting details most racks get wrong.Airing Down Is Free Traction. Deflators Make It Fast.Dropping tire pressure grows your contact patch 30-50% and costs nothing. Why rapid deflators are worth it, and how to air down without guessing.Trail Standard Offroad: Preparing Your 4Runner for AdventureWhat to check, carry, and fix before a 2nd gen 4Runner sees real trail — the prep list that keeps a 30-year-old truck from becoming a recovery.What CFM Do You Actually Need? Off-Road Compressor NumbersCFM is the spec that decides how long you wait at the trailhead — not PSI. Real figures by tire size, and why the number on the box is optimistic.

Questions

What CFM do I actually need?

Enough to air four tires from 15 to 35 psi in a few minutes without the compressor overheating. The CFM guide below turns that into a number.

Onboard or portable?

Onboard if you air down every trip. Portable if it's occasional and you want it in a different truck someday. The guide below weighs both.

Other systems:Lighting Suspension & Steering Roof Racks 22RE Engine 3VZ-E Engine

Air & Recovery

Parts

Single Air Compressor with Line Kit

Twin Air Compressor

Twin Air Compressor with Line Kit

Bunker Air Compressor Kit

Quad Air Hose Kit

Tire Deflator Kit

Guides

Questions

What CFM do I actually need?

Onboard or portable?