Replace Factory Leaf Springs With Progressive Coilovers And Forged Radius Arms To Restore Steering Precision On 2008–2010 Ford F-250/F-350 Models

This Stage 5 conversion system upgrades underperforming truck geometry by pairing adjustable dual-reservoir shock absorbers with CNC-machined radius arms, delivering controlled body motion and reliable load support for mixed street and off-road duty.

• Precision Billet Radius Arms: Replace tired OEM leaf spring perches with solid 6061-T6 aluminum arms that correct caster and pinion angles, eliminating vague steering while preserving factory axle articulation.
• 4–5.5“ Progressive Lift Profile: Features tuned spring curves that maintain comfortable daytime travel heights yet bottom out smoothly during heavy impacts, keeping the chassis level under bumper-pulling loads.
• High-Capacity Tire Clearance: Engineered spacing allows direct fitment around stock wheels plus 35-inch off-road rubber, with proven clearance reaching 37-inch dimensions when paired with standard mud flaps or mild trimming.
• Serviceable Monotube Dampers: Internal piggyback reservoirs isolate nitrogen pressure from oil chambers, preventing fade during prolonged desert running or mountain descents while allowing aftermarket shims for weight-specific tuning.
• Direct Bolt-On Installation: Matches original frame and spindle mounting points exactly, requiring zero cutting or fabrication to swap existing leaf packs into a fully independent front suspension layout.
• Versatile Payload Compatibility: Valving calibrated for gasoline engines handles both daily commuting and moderate trailer towing, offering consistent damping response whether running light or carrying gear across rough terrain.

Compatible exclusively with 2008 through 2010 four-wheel-drive Ford F-250 and F-350 gas-powered trucks, with application notes specifying non-fitting status for diesel variants and cab-chassis platforms. Constructed with corrosion-resistant finishes and backed by the manufacturer’s lifetime limited warranty against structural defects.