King Shocks 37001-102 3.5 Rear Bypass Shock Kit for 2021-2026 Ford F-150 Raptor

Vehicle Fitment

• 2021-2026 Ford F-150 Raptor, 4WD - Rear
• 2021-2026 Ford F-150 Raptor R, 4WD - Rear

Fitment Notes

• 4WD models only - Rear position
• Fits both standard Raptor and Raptor R (2021-2026) - same rear bypass shock for all Gen 3 Raptor platform variants
• Sold as a pair (2 rear bypass shocks) - front coilovers sold separately (see 30001-403 for 3.0" IBP front coilover)
• 100% bolt-on installation - no cutting or welding required; all necessary hardware included
• Fully adjustable - 4-tube bypass design allows independent adjustment of compression and rebound damping; built-in bump zone for enhanced bottoming control
• Fully rebuildable, serviceable, and tunable with simple hand tools

Features

• Massive 3.5" diameter shock bodies - King's largest OEM Performance bypass body - deliver maximum damping force, fluid capacity, and fade resistance for the Raptor's extreme suspension travel demands
• Fully adjustable 4-tube bypass design provides independent compression and rebound adjustment for precise tuning across any terrain from highway to high-speed desert running
• Built-in bump zone delivers superior bottoming control at the end of the stroke - a key bypass advantage over conventional monotube shocks
• Large 1" diameter shafts for maximum strength and durability
• 3.5" OD Pure Race External Finned Reservoir in extruded 6061-T6 aluminum - fins act as a heat sink accelerating heat exchange from the shock fluid, dramatically increasing fluid capacity and cooling capacity for sustained high-speed performance
• All-new threaded end cap design with Schrader valve protective cap and improved no-hose-clamp reservoir mounts
• Built from the same quality materials and precise tolerances as King's top-of-the-line Pure Race series shocks
• Extensive dynamometer lab testing and real-world tuning to develop the optimal damping curves for the 2021+ Raptor's suspension geometry and travel
• Hand-built in the USA by King's experienced shock technicians

Specifications

• Part Number: 37001-102
• Position: Rear (pair - 2 bypass shocks)
• Shock Type: 4-Tube Bypass with built-in bump zone
• Shock Body Diameter: 3.5 inches
• Shaft Diameter: 1 inch
• Reservoir: 3.5" OD Pure Race External Finned Reservoir (6061-T6 aluminum, no hose clamps)
• Extended Length: 31.905 inches
• Compressed Length: 19.493 inches
• Stroke: 12.412 inches
• Gas Pressure: 200 PSI
• Drivetrain: 4WD
• Adjustability: Independent compression and rebound adjustment (4-tube bypass)
• Installation: 100% bolt-on; no cutting or welding
• Package Weight: 72 lbs
• Package Dimensions: 36" L x 12" W x 10" H
• Warranty: King Shocks 90-day manufacturer warranty
• Made in USA

Included Components

• 2x King Shocks 3.5" 4-Tube Bypass Rear Shock Absorbers with Finned Reservoirs (driver and passenger side)
• All necessary hardware for installation
• Note: Front coilovers NOT included - sold separately

Product Description

The King Shocks 37001-102 is a pair of 3.5" 4-tube bypass rear shocks for the 2021-2026 Ford F-150 Raptor and Raptor R - King's most capable OEM Performance rear shock for the Gen 3 Raptor platform. Where conventional monotube shocks use a single valve stack to control all damping, the 4-tube bypass design routes fluid through a series of bypass tubes that progressively engage depending on shaft position and velocity, delivering independent compression and rebound adjustment across separate bypass circuits. The built-in bump zone at the end of stroke provides a hydraulic cushion that prevents hard bottoming even when the Raptor's 14" of rear suspension travel is fully utilized at speed. The 3.5" body and 12.412" of stroke are sized specifically for the Raptor's extreme travel demands.

The standard configuration includes 3.5" OD Pure Race External Finned Reservoirs in extruded 6061-T6 aluminum - the same reservoir spec found on King's trophy truck race components - with new threaded end caps, Schrader valve protective caps, and improved no-hose-clamp reservoir mounts. Built to the same material specifications and tolerances as King's Pure Race series, with large 1" diameter shafts and hand assembly by King's experienced technicians. Installation is 100% bolt-on for the 2021-2026 Raptor and Raptor R. Front 3.0" IBP coilovers (30001-403) are sold separately. 90-day manufacturer warranty; hand-built in the USA.