Monroe
Reflex Light Truck Shock Absorber

Monroe 911331 Shock Absorber - Rear

Brand Monroe 911331
Position Rear
Compressed Bumper Stop No
Compressed Length 17.06
Dust Shield Yes
Extended Bumper Stop Yes
Extended Hydraulic Lockout No
Extended Length 28.07
Lower Mounting Code LS27
Lower Mounting Type Loop Bushing & Sleeve Mount - 12MM Sleeve ID X 1.9/16" Sleeve OAL
Parts Pack None
Travel Length 11.01
Upper Mounting Code LS27
Upper Mounting Type Loop Bushing & Sleeve Mount - 12MM Sleeve ID X 39.69MM Sleeve OAL
Product line Reflex Light Truck Shock Absorber
Fits Ford · 6 vehicles

ASD valving technology. Automatically adjusts to absorb impact and reduce roll and dive.

Dust shield included. Helps protect the shock absorber from road debris.

Loop bushing mounts. Upper and lower sleeve mounts simplify installation.

Cross-references PRT 173828, Rancho RS55286 and 30297 for the same application. See all 8.

$64.26Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Shock Absorbers are typically replaced in pairs, axle by axle.
Order total $64.26
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Monroe Reflex Light Truck Shock Absorber

Monroe Reflex Light Truck Shock Absorber 911331 is built for rear suspension control on 2009-2014 Ford F-150 applications. It uses ASD valving technology that responds to changing road inputs to help manage body motion in trucks with a higher center of gravity.

Key Features

  • ASD valving technology automatically adjusts damping response to road impact
  • Rear shock absorber for 2009-2014 Ford F-150
  • Dust shield included for added protection
  • Extended bumper stop: Yes
  • Compressed length: 17.06 in.; extended length: 28.07 in.; travel length: 11.01 in.
  • Upper and lower mounting code: LS27
  • Loop bushing and sleeve mount design with 12MM sleeve ID

Product Details

The Monroe Reflex Light Truck Shock Absorber line is engineered for light trucks and other vehicles with a higher center of gravity, where suspension control matters during braking, cornering, and uneven-road driving. Part number 911331 uses Monroe’s ASD valving approach to react to impact changes and help reduce roll and dive at the rear of the vehicle. This part cross-references Rancho RS55286 for the same application.

What It Helps Address

  • Excessive rear-end bounce over rough pavement
  • Body roll during lane changes and turns
  • Nose dive and rear suspension instability during braking
  • Loss of damping control as shocks wear with mileage
  • Rear suspension harshness on daily-driven Ford F-150 trucks

Installation Notes

Compatible With 2009-2014 Ford F-150, rear. Verify mounting style, sleeve dimensions, and compressed/extended length before installation. The upper and lower mounts are loop bushing and sleeve style, so matching the OE mounting configuration is important for proper fitment. Monroe 911331 is a direct rear shock application for the listed Ford F-150 years.

Quality Assurance

Monroe backs this shock absorber with a limited lifetime warranty on the listed Ford F-150 application. The Reflex Light Truck Shock Absorber line is positioned for controlled damping in truck suspension service, and part number 911331 is built to meet the fitment and mounting requirements shown above.

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypePositionNotes
2014FordF-150RWDRearLimited lifetime warranty on this shock absorber.; Reflex Light Truck Shock Absorber
2013FordF-150RWDRearLimited lifetime warranty on this shock absorber.; Reflex Light Truck Shock Absorber
2012FordF-150RWDRearLimited lifetime warranty on this shock absorber.; Reflex Light Truck Shock Absorber
2011FordF-150RWDRearLimited lifetime warranty on this shock absorber.; Reflex Light Truck Shock Absorber
2010FordF-150RWDRearLimited lifetime warranty on this shock absorber.; Reflex Light Truck Shock Absorber
2009FordF-150RWDRearLimited lifetime warranty on this shock absorber.; Reflex Light Truck Shock Absorber
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
PRT — 173828Rancho — RS5528630297AL3Z18125DAL3Z18125EAL3Z18125KBL3Z18125CRS5286