ICON 2021+ Ford Bronco 3-4" LIFT STAGE 4 SUSPENSION SYSTEM BILLET # K40004

The ICON Vehicle Dynamics Stage 4 Suspension System # K40004 is designed for use on the 2021-UP Ford Bronco (not for Sasquatch models) and features precision-manufactured, custom valved remote reservoir coilover shocks designed to provide the maximum suspension travel possible along with superior ride quality and suspension performance both on and off-road. ICON coilovers also allow for the adjustment of ride height to yield 3-4” of front lift and 2-3” of rear lift over stock 4-door Broncos without the Sasquatch Package.

To provide for sustained shock performance at speed through rough terrain, Stage 4 adds remote reservoirs to the ICON Coilovers. Remote reservoirs greatly increase shock oil volume and heat dissipation surface area to resist overheating and cavitation under hard use, which can lead to damper fade. To accommodate the increased travel and lift height afforded by the ICON Coilovers, this Stage 4 kit comes with Billet Aluminum Upper Control Arms which provide on-vehicle caster and camber adjustability and feature our patented Delta Joint PRO, which allows for up to 90-desgrees freedom of movement. The rear shocks are oriented shaft-up with unique triple-rate coil springs to achieve the most rear suspension travel and the best ride quality possible. This suspension system is designed to provide up to 11.5" of front suspension travel and 14" of rear suspension travel when used with 35X12.50 tires. It may be safely used with 37" and larger tires if using the optional up-travel limiters (sold separately). The factory crash bars on non-Sasquatch equipped Broncos must be removed to clear 35" and larger tires, but ICON now offers a replacement High Clearance Crash Bar set for those who would like to run larger tires and retain the functionality of the crash bars. Purchased separately!

ICON # K40004 Features & Benefits
Improved suspension performance and ride quality over stock
Up to 11.5" front / 14” rear wheel travel with 35” tire fitment
Vehicle specific tuned remote reservoir front and rear coilover shocks for superior damping and vehicle control, even under hard use
Adjustable coilovers yield up to 3-4" of front lift height and 2-3” of rear lift height over stock
PTFE lined spherical bearings and application specific mounting hardware
6061 Aircraft grade aluminum CNC machined components
Corrosion resistant CAD plated coilover shock bodies with 7/8” diameter shafts
ICON engineered coil springs featuring a unique triple rate rear coil design
High strength alloy CNC machined lower bar pins
Billet aluminum UCAs for added strength, durability, and on-vehicle caster/camber adjustment for optimum drivability
UCAs feature the patented (U.S. Pat. 10,731,700) Delta Joint Pro with 90 degrees of total articulation
100% Bolt-on system - no drilling, cutting, or welding necessary for install

Tire & Wheel Information:
OEM Wheels & Tires Fitment: Yes
Recommended Aftermarket Wheels: ICON Alloys | 17x8.5" w/ 5.75” Backspace / 25mm Offset
Recommended Aftermarket Tires: 35" x 12.50"
Use of 37" tires require coilover bump stop spacers along with trimming and modifications

APPLICATION NOTE #55: SHOCKS ARE FULLY SERVICEABLE.
LIFT HEIGHTS INDICATED ARE FOR A STOCK EQUIPPED VEHICLE.
APPLICATION NOTE #66: 2 DOOR MODELS WILL SIT TALLER THAN 4 DOOR MODELS.
APPLICATION NOTE #132: WHEN RUNNING 37" TIRES USE UP TRAVEL LIMITERS PART #611075 IN THE FRONT
APPLICATION NOTE #133: WHEN RUNNING 37" TIRES USE UP TRAVEL LIMITERS PART #611074 FOR THE REAR
APPLICATION NOTE #135: LIFT HEIGHTS & APP NOTES BASED NON-SASQUATCH EQUIPPED VEHICLES
APPLICATION NOTE #137: WHEN RUNNING FACTORY LOWER LINKS USE PART #611072
APPLICATION NOTE #138: RECOMMEND HIGH CLEARANCE CRASH BARS PART #42000 ON NON-SASQUATCH EQUIPPED VEHICLES WHEN RUNNING 35" TIRES
APPLICATION NOTE #139: WHEN RUNNING 37" TIRES CRASH BAR REMOVAL MAY BE REQUIRED BUT IS NOT RECOMMENDED

ICON # K40004 System Components:
48500DJ (QTY: 1) | 21-UP BRONCO BILLET UCA DJ PRO KIT
611072 (QTY: 1) | 21-UP BRONCO HOSE ROUTE KIT OEM REAR LINK 1.9"
48710 (QTY: 1) | 21-UP BRONCO REAR 2.5 VS RR COILOVER KIT
48700 (QTY: 1) | 21-UP BRONCO FRONT 2.5 VS RR COILOVER KIT

If you have any questions on this or any other ICON Vehicle Dynamics product please click on the "ask a question" link located at the very top of this page.

This item ships for FREE via standard ground service to any address in the 50 United States of America!