Expedition Lift — Long-Travel and Dual Remote Reservoir ($2,500+)

At the expedition tier, the 4Runner build follows two distinct paths. The first is a high-end coilover upgrade with extended UCAs — Icon Stage 3, Fox 2.5 PE, or King OEM Performance+ — which keeps the stock geometry footprint but adds 12"+ of high-speed damping performance. This path is KDSS-compatible on KDSS-equipped trucks (specify at order), and it's the correct approach for overland rigs that need refined high-speed comfort and a clean build without irreversible modifications.

The second path is Total Chaos long-travel, which replaces the entire front suspension geometry with extended lower control arms, a wider track, and repositioned shock mounts. This delivers 12"–14" of wheel travel and transforms the 4Runner into a genuine high-speed trail machine. Full long-travel kits on KDSS-equipped 4Runners require a KDSS delete — you replace the KDSS hydraulic end links with fixed end links and remove the KDSS system. This is irreversible in the sense that you'd need to source replacement KDSS parts and rebuild to return to stock. The payoff is unrestricted suspension travel and the ability to run larger shocks that the KDSS plumbing physically prevented.

KDSS delete is not a decision to make lightly if you use the 4Runner daily. On pavement, KDSS meaningfully reduces body roll and improves stability. Without it, you'll notice more roll on on-ramp entries and spirited driving. On the trail, you won't miss it. If the 4Runner is a dedicated trail and overland rig that sees normal roads mostly as transit between trailheads, KDSS delete is fine. If it's a genuine daily driver that also goes off-road, preserve the KDSS and spec the KDSS-compatible high-end shock route instead.

Remote reservoir coilovers (Fox 2.5, Icon 2.5 VS, King OEM+) hold more fluid and run cooler on repeated high-speed hits. The reservoir doubles the oil volume, which significantly delays thermal fade on desert washboards or repeated technical obstacles. At this price tier, the damping quality is the primary deliverable — these shocks are tunable in the field (compression adjustment knob) and rebuildable for long-term ownership.

Steps

1. Decide: KDSS-compatible high-end coilovers, or full long-travel with KDSS delete — plan accordingly
2. Order complete kit with matching UCAs and rear shocks; do not mix front-tier with budget rear
3. If KDSS delete: obtain fixed sway bar end links and bracket set before starting; remove KDSS hydraulic lines and cylinders first and cap all ports per manufacturer guidance
4. Lift and fully support vehicle on jack stands
5. Remove front suspension assembly completely: shocks, UCAs, lower control arms (on long-travel), sway bar
6. Install new lower control arm brackets and arms per kit template for long-travel; or install new extended UCAs only for coilover-only upgrade
7. Install new coilovers; set preload per shock manufacturer spec for target ride height
8. Install bumpstop extensions per kit requirements
9. Reconnect sway bar (with fixed end links if KDSS delete) or install long-travel sway bar system
10. Reinstall brakes and wheels
11. Complete rear: install new shocks; replace or rebuild rear suspension per kit instructions
12. Lower vehicle; bounce to settle
13. Drive to alignment shop — extended-travel geometry requires specialist alignment
14. Break in shocks per manufacturer protocol; recheck and adjust compression valve after 500 miles

Why it works

• Remote reservoir coilovers at this tier are rebuildable and tunable — long-term ownership investment
• Icon Stage 3 KDSS-compatible option allows full expedition performance without irreversible modifications
• Long-travel kits deliver 12"–14" of wheel travel — the highest-performance IFS 4Runner front end available
• Fox 2.5 PE shocks handle desert high-speed terrain with consistent damping on repeated hits
• King shocks are field-rebuildable in remote locations with basic tools

Trade-offs

• KDSS delete is effectively irreversible without sourcing and reinstalling OEM KDSS components
• Long-travel kits require inner fender modification or cutting in some configurations
• Total cost for full long-travel with rear conversion approaches $8,000–$10,000 complete
• Extended-travel builds require an alignment specialist — standard shops may not have 4Runner long-travel specs
• Expedition tier is genuinely unnecessary for most trail and overland use — mid-tier lift delivers 90% of the capability at 40% of the cost

Tools required

• floor jack
• jack stands
• torque wrench
• socket set
• spring compressor
• ball joint press
• welder or fab shop access
• angle grinder
• breaker bar
• pry bar
• drill and bits

Parts

Sources

• Icon Vehicle Dynamics Stage 3 4Runner Product Page
• Total Chaos 4Runner Long-Travel Kit

Related

• Mid-Tier Lift with UCAs — 2.5"–3" Lift ($1,000–$2,500)
• Budget Lift Kit — Bilstein 5100 and Spacers (≤$600)
• All Toyota 4Runner guides & tools
• Browse the full DIY database

Written and maintained by an AZ wheeler and driveway wrencher. How we source guides. Always cross-reference your factory service manual — modifications affect vehicle safety and warranty. Work at your own risk.