Leveling System kit

Features:

• Progressive rate CNC hot wound coil springs
• Includes front and rear Fox 2.0 shocks
• Custom Synergy tune for the Super Duty
• Front wheel travel up 30 percent
• Brake line relocation brackets included
• Caster sleeves retain factory geometry
• Bump stop and sway bar end link spacers included
• Fits 35-inch tires with no trimming
• 37-inch tires with minor fender trimming
• Two stage abrasion resistant powder coat
• Springs engineered and made in the USA
• 100% bolt-in, basic hand tools

Level Out Your Super Duty With The Springs, Shocks, And Hardware All In One Box

That nose down stance on a Super Duty is easy to spot and just as easy to fix, as long as the parts you pick work together. The Synergy 8650-12 Leveling System raises the front end for a level look while improving ride quality, handling, and suspension travel. It does that with a matched set of parts instead of a spring and a hope. The heart of the kit is a pair of progressive rate coil springs, CNC hot wound in the USA, which Synergy says gives them a softer rate that improves comfort and control without settling or sagging over time. Those springs are paired with Fox 2.0 shocks at all four corners, tuned by Synergy specifically for the Super Duty platform. That combination gives you a smoother ride on the street and more bottom out resistance when the road turns rough, and Synergy says front wheel travel grows by 30 percent, from 7.75 inches to 9.75 inches. The kit also includes brake line relocation brackets, caster sleeves, and bump stop and sway bar end link spacers, which help the truck keep its stock suspension geometry and factory handling. Synergy says there is no loss in towing capacity or performance, and it leaves room for 35 or 37 inch tires with the proper backspacing.

What Comes In The Box From Hot Wound Springs To Brake Line Brackets

The Synergy 8650-12 is a front leveling system for 2005 and newer Ford F-250 and F-350 Super Duty 4WD diesel trucks, supplied with Fox 2.0 smooth body shocks. Synergy lists the expected front lift as 2.5 inches on 2005-2019 trucks, 3.5 inches on 2023 and newer trucks, and 2.5 inches on 2020 and newer Tremor models. The 2.5 inch leveling springs, part 8663-25, are precision CNC hot wound progressive rate coils with a two stage abrasion resistant powder coat, and Synergy says they are bind free and will not stress fracture when compressed. The kit includes two front and two rear Fox 2.0 shocks with a custom Synergy tune, and the 2.0 shocks are IFP shocks that separate the shock oil from a nitrogen charged gas chamber to prevent oil aeration. To retain stock geometry, it adds CNC machined 6061 aluminum bump stop spacers, zinc plated 1045 steel caster sleeves, CNC laser cut zinc plated brake line relocation brackets, a sway bar end link spacer kit, and a Fox shock eyelet sleeve. All of the components bolt in, and the install needs only basic hand tools. The system fits 35 x 12.50 tires with no trimming, while 37 x 12.50 tires need minor fender trimming depending on wheel backspacing. Synergy says an adjustable track bar is required to recenter the axle after the lift, and it recommends the 7675-01 or 7675-02.

Fitment: 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 Ford F250/F350/F450/F550/F600 Super Duty 4WD Diesel

Notes:

• Synergy lists this part number as the 4x4 diesel truck leveling system, confirm your truck is a 4WD diesel before ordering
• Expected front lift is 2.5" on 2005-2019 F-250/F-350 trucks, 3.5" on 2023 and newer F-250/F-350 trucks, and 2.5" on 2020 and newer F-250/F-350 Tremor trucks
• An adjustable track bar is required to recenter the axle after installing the lift, Synergy recommends its adjustable track bar 7675-01 or 7675-02, sold separately
• The front suspension height sensor on equipped trucks requires relocation
• On 2023 and newer trucks with the 14 bolt Dana Advantek M235 axle, a true manual locking hub on the front passenger side or trimming of the axle shaft dust shield is required to use the included caster sleeves
• Fits 35x12.50 tires with no trimming, minor fender trimming is needed for 37x12.50 tires depending on wheel backspacing
• Includes 2.5" leveling springs (8663-25), two Fox 2.0 front and two Fox 2.0 rear smooth body shocks, 1" front bump stop spacers (8657-01), caster sleeve kit (8612-24), sway bar end link spacer kit (8673-01), front brake line relocation brackets (8682-01), and a Fox shock eyelet sleeve (8650-01)
• Fox 2.0 shocks are IFP (internal floating piston) shocks with a custom Synergy tune for the Super Duty platform
• Synergy recommends pairing the system with its heavy duty adjustable track bar and heavy duty steering kit for best results
• Spring durability, wheel travel, and towing statements are manufacturer claims, results will vary

Install Instructions