Carli Backcountry 2.5 Leveling System | Carli-SPEC 2.0" Remote Reservoir Shocks | Adjustable Track Bar | Caster Shims | 2.5" Lift | 2011–2016 Ford F-250 / F-350 Super Duty Diesel 4WD | SKU: CS-FLVL-BC-CS-11
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Shipping & Delivery
Free shipping is available within the lower 48 U.S. states. Large or heavy items may ship by freight, and delivery timing can vary by warehouse, carrier, and product availability.
Fitment, Shipping & Product Support
Verified Fitment
This system fits the 2011 through 2016 Ford F-250 and F-350 Super Duty with a diesel engine and 4WD. It is a complete 2.5-inch front leveling system — coil springs, Carli-SPEC 2.0" Remote Reservoir shocks, adjustable track bar, caster shims, and brake lines are all included in the base kit. A rear leaf spring selection is required at checkout and is not included in the base kit price.
| Year Range | Make | Model | Drivetrain | Engine | Notes |
|---|---|---|---|---|---|
| 2011–2016 | Ford | F-250 Super Duty | 4WD | Diesel | All cab configurations |
| 2011–2016 | Ford | F-350 Super Duty SRW | 4WD | Diesel | See Field 3 for DRW note |
| 2011–2016 | Ford | F-350 Super Duty DRW | 4WD | Diesel | Confirm fitment — text (469) 407-7538 |
Verify fitment by text: (469) 407-7538
Does NOT Fit
| Exclusion | Reason | Correct System |
|---|---|---|
| 2011–2016 F-250/F-350 Gas | This system is tuned for diesel front geometry and spring rates. Gas-powered trucks require a different system. | CS-FLVL-BC-CS-11-GAS (gas Backcountry for 2011–2016) |
| 2017–2019 F-250/F-350 Diesel | Different platform — 2017+ Super Duty uses different suspension geometry, different track bar (CS-FATB-17 CUB design), and different spring specs | CS-FLVL-BC-CS-17 (2017+ Backcountry) |
| 2020+ F-250/F-350 Diesel | 2020+ platform produces 3.5" of front lift with these coils — different system | CS-FLVL-BC-CS-20 or equivalent |
| 2010 or earlier F-250/F-350 | Prior Super Duty generation — different system specifications | CS-FLVL-BC-05 or CS-FLVL-BC-08 family |
| Ford F-150 (all years) | F-150 front suspension architecture is entirely different | Not applicable |
| 2WD F-250/F-350 | 4WD only — system designed for solid front axle configuration | Not applicable |
| Ram 2500/3500 | Different truck, different suspension | See Carli Ram HD systems |
Verify fitment by text: (469) 407-7538
Component Specifications
| Component | Specification |
|---|---|
| SKU | CS-FLVL-BC-CS-11 |
| System name | Backcountry 2.5 Leveling System — 2011–2016 F-250/F-350 Diesel 4WD |
| Base kit price | From $2,690.00 (rear leaf spring required — additional cost) |
| Front lift height | 2.5 inches |
| Front wheel travel | 9 inches |
| Rear wheel travel | 13.8 inches |
| Front shocks | Carli-SPEC 2.0" Remote Reservoir — 6063 aluminum body, anodized for corrosion resistance, 5/8" hardened steel chrome-plated shaft, fully serviceable and rebuildable, 1-piece bushings in 6061 billet rod ends, 5WT oil |
| Shock warranty | 1-year warranty, serviced by Carli (Remote Reservoir shocks — different from Signature IFP lifetime warranty) |
| Front coil springs | CS-FLC-05 diesel leveling coils — 2.5" lift, linear rate, shot-peened and pre-set |
| Adjustable track bar | CS-FPRB-05 — FK Race Heim frame joint + offset machined tapered rod end (axle); corrects axle centering for 2.5" lift; will not work at stock height or with drop brackets |
| Caster shims | CS-FCASTERSHIM-2.5 — 2° caster shims, corrects and improves caster over stock |
| Front brake lines | CS-FORDBBL-11 — stainless, DOT-compliant, accommodates extended front suspension travel |
| Rear leaf spring | Required — selected at checkout, not included in base price. Full Progressive Leaf Spring Pack (CS-FFSP-LVL-11) recommended; Progressive Add-a-Pack (CS-FPAP-11) also available. |
| Tire fitment | 35" x 12.5" without trimming; 37" x 12.5" with some trimming |
| Recommended wheel | 17"–18", max 9" wide, 5.5" backspacing (with Carli Fabricated Radius Arms) / 5" backspace (factory arms) |
What Is and Is NOT Included
Included in base kit (CS-FLVL-BC-CS-11):
| Component | SKU |
|---|---|
| Carli-SPEC 2.0" Remote Reservoir front shocks (pair) | CS-FLVLSPKG-CS20RR-A (front portion) |
| Carli-SPEC 2.0" Remote Reservoir rear shocks (pair) | CS-FLVLSPKG-CS20RR-A (rear portion) |
| Front diesel leveling coil springs | CS-FLC-05 |
| Adjustable track bar | CS-FPRB-05 |
| 2.5° caster shims | CS-FCASTERSHIM-2.5 |
| Front brake lines | CS-FORDBBL-11 |
| Hardware and installation hardware | Included per Carli specification |
Not Included:
| Item | Notes |
|---|---|
| Rear leaf spring (Full Progressive or Add-a-Pack) | Required — must be selected at checkout. Carli states that without a rear leaf spring selection, ride quality and height result will be unknown. Full Progressive Leaf Springs (CS-FFSP-LVL-11) strongly recommended — especially for F-350 which has stiffer factory main springs. Add-a-Pack (CS-FPAP-11) maintains factory payload capacity. |
| F-350 payload restoration (if Full Springs selected) | Full Progressive Leaf Springs reduce F-350 to "light ¾-ton" capacity. An aftermarket airbag system can restore payload if needed. Sold separately. |
| Torsion Sway Bar | Optional upgrade available at checkout — replaces factory sway bar, improves ride quality on and off-road. Recommended for buyers not loaded to GVWR daily. |
| Fabricated Radius Arms | Optional upgrade — adds tire clearance, limit strap shock protection, serviceable spherical bearings, and additional caster correction. |
| Steering stabilizers | High Mount and Low Mount options available separately or together. |
| Leaf Spring Shackle | Optional upgrade for improved rear ride quality. Sold separately. |
| Professional installation labor | Shop installation required. Not included. |
| Post-install alignment | Mandatory after installation. Not included — schedule with installer. |
Critical Compatibility
| Condition | Interaction | Action Required |
|---|---|---|
| Rear leaf spring — required, not optional | Carli explicitly warns that selecting no rear leaf spring option will produce unknown ride quality and height. The system is tuned for either the Full Progressive Springs or Add-a-Pack. | Select rear leaf spring option at checkout — Full Progressive recommended, especially for F-350. |
| F-250 vs. F-350 rear spring recommendation | Since 2008, F-250 has a lighter-rate main spring pack than F-350. The Add-a-Pack improves F-250 rear ride meaningfully. For F-350, the Add-a-Pack does little for unloaded ride due to the stiffer 3-spring main pack. Carli strongly recommends Full Progressive Leaf Springs for F-350 specifically. | F-350 owners: order Full Progressive Leaf Springs (CS-FFSP-LVL-11) unless payload maintenance is critical. |
| Factory wheels with oversized tires | Carli explicitly states factory wheels should not be run with oversized tires — they are known to rub the radius arm, sway bar, and brake lines. Factory tires on factory wheels work without issue. | Order correct aftermarket wheels (17"–18", max 9" wide, 5.5" backspacing with Carli radius arms) for any oversized tire fitment. |
| Track bar — no drop brackets | CS-FPRB-05 will not work with track bar drop brackets. Carli's geometry correction is achieved through bar adjustment, not a drop bracket. | Confirm existing or planned lift geometry does not include a drop bracket before ordering. |
| Gas-powered 2011–2016 Super Duty | Diesel and gas systems are different — diesel coils, shock tuning, and geometry specs do not apply to gas trucks. | Order CS-FLVL-BC-CS-11-GAS for gas applications. |
| 2017+ Super Duty | Different platform, different track bar (CUB design), different lift height per spring. This system does not transfer to 2017+. | Order CS-FLVL-BC-CS-17 for 2017+ diesel applications. |
Installation Notes
Skill level: Intermediate to advanced. Complete front suspension system with rear leaf spring replacement. A shop with Ford Super Duty experience is strongly recommended.
Post-install alignment: Full front-end alignment is mandatory after installation.
Track bar adjustment: CS-FPRB-05 must be adjusted to the 2.5" configuration before installation. Incorrect adjustment leaves the axle off-center.
Caster shims: 2° caster shims are included and must be installed to correct and improve front end geometry over stock.
Rear leaf spring installation: The rear leaf spring selection — either Full Progressive or Add-a-Pack — must be installed simultaneously with the front system. Installing front system components without addressing the rear produces an unbalanced result.
F-350 3-5/8" factory block note: F-350 trucks equipped with a factory 3-5/8" tall block will require the factory 2" block (Part Numbers 7C3Z-5598-L and 7C3Z-5598-K) to achieve a leveled stance with the Add-a-Pack option. Full Progressive Springs do not require the factory block.
Required tools (professional shop):
| Tool | Required |
|---|---|
| Vehicle lift rated for F-250/F-350 | Yes |
| Torque wrench | Yes |
| Full socket and wrench set | Yes |
| Spring compressor | Yes (for front coil spring removal/installation) |
| Alignment equipment or scheduled appointment | Yes |
Torque specifications: Follow Carli's published torque values. Instructions available at carlisuspension.com.
Common Questions
What's the difference between this and the Leveling System (CS-FLVL-SIG-05) and Starter System (CS-FLVL-STR-SIG-11)?
Three systems in ascending order of capability. The Leveling System and Starter System both use Carli Signature 2.0 IFP shocks (limited lifetime warranty, internal floating piston). The Backcountry uses Carli-SPEC 2.0" Remote Reservoir shocks (1-year warranty, remote reservoir for better heat management on and off-road). The Backcountry is designed for buyers who want slow-to-mid-speed off-road capability in addition to daily on-road performance. The Leveling and Starter Systems are on-road and light-duty focused.
Do I have to buy rear springs with this system?
Yes — Carli explicitly states the system is tuned for either the Full Progressive Leaf Springs or the Add-a-Pack, and that selecting no rear option will produce unknown ride quality and height. The rear leaf spring is required but selected separately at checkout. For F-350 owners, Full Progressive Leaf Springs are strongly recommended over the Add-a-Pack due to the F-350's stiffer factory spring pack.
Does this include the adjustable track bar?
Yes — CS-FPRB-05 is included in the base kit. This is the same adjustable track bar sold as a standalone part for $438. It uses an FK Race Heim frame joint and an offset machined tapered rod end at the axle — not the CUB uniball design used in the 2017+ track bar (CS-FATB-17).
Can I run my factory wheels with 35" or 37" tires on this lift?
No — Carli explicitly states factory wheels should not be run with oversized tires. Factory wheels are known to cause rubbing on the radius arm, sway bar, and brake lines with oversized tires. Factory tires on factory wheels work fine. For oversized tires, Carli recommends 17"–18" wheels, max 9" wide, with 5.5" backspacing when running Carli Fabricated Radius Arms, or 5" backspacing with factory arms.
What is the shock warranty?
The Carli-SPEC 2.0" Remote Reservoir shocks carry a 1-year warranty, serviced by Carli. This is different from the Carli Signature Series IFP shocks in the Leveling and Starter Systems, which carry a limited lifetime warranty. The tradeoff is the remote reservoir design's superior heat management for off-road use.
The Obsidian Take
This system is for the 2011–2016 F-250 or F-350 Diesel owner who wants a leveled Super Duty with meaningful off-road capability — not just a road-smooth commuter truck. The Carli-SPEC 2.0" Remote Reservoir shocks and 13.8" of rear wheel travel are what separate this from the Leveling and Starter System alternatives using Signature IFP shocks. The Backcountry is built for slow-to-mid-speed off-road use while remaining a fully capable on-road, highway, and towing platform.
The mandatory rear leaf spring is not an upsell — it is a functional requirement. Carli cannot tune a complete system around an unknown rear spring rate. F-350 owners in particular should order the Full Progressive Leaf Springs, not the Add-a-Pack. The F-350's stiffer 3-spring main pack makes the Add-a-Pack an inadequate rear solution for most use cases.
It is not for the gas-powered Super Duty owner — that truck requires CS-FLVL-BC-CS-11-GAS. It is not for the 2017-or-newer Super Duty — that platform uses a different system and a different track bar. And it is not for the buyer who wants the maximum off-road performance Carli offers — the Pintop, E-Venture, and Dominator systems provide more capability at higher price points and complexity levels.
At $2,690 plus rear leaf springs, this is the point in the Carli 2011–2016 Super Duty lineup where on-road comfort and off-road performance stop trading off against each other.
Manufacturer Data Disclaimer
Specifications are sourced from Carli Suspension product documentation and authorized distributor data. Actual product specifications, component fitment, lift heights, and rear leaf spring requirements may vary by specific cab and bed configuration, existing modifications, and manufacturer updates. Confirm all vehicle specifications with Carli Suspension or OFAS before ordering.
Prop 65 Warning
WARNING: This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Non-Returnable Notice
Suspension components are non-returnable once installed. Confirm model year, engine (diesel), drivetrain (4WD), and rear leaf spring selection before ordering. Text (469) 407-7538 with any fitment or configuration questions before your order is placed.