Fitment-checked off-road parts  ·  Manufacturer-listed exclusions shown before you buy
TRAILFORTRESSBuilt for the trail. Checked for your truck.Cart
Home / Suspension & Lift Kits / Shocks & Struts / Rough Country 502161_B
Rough CountryPart 502161_B · UPC 00840269950865

M1 Loaded Strut Pair for Toyota 4Runner & FJ Cruiser 4WD (2003-2009)

$549.95MAP price
In stock: 22 available
Shipping weight: 39 lb.
  • Fits 2003-2009 Toyota 4Runner 4WD (Limited, SR5, Sport) and 2007-2009 FJ Cruiser 4WD (Base, TRD Special Edition, Trail Teams Special Edition)
  • Does not fit PRO Series models or vehicles with KDSS or X-REAS; cannot be used together with a strut spacer
  • 46mm monotube design with 46mm digressive piston and 18mm hardened, chromed rod
  • Zinc-plated bodies and vulcanized natural rubber bushings
  • Listed install time 2-3 hours — downloadable installation guide available
  • 3 Year Limited Warranty | Shipping weight: 39.0 lb
📄 Installation guides (PDF): Installation Instructions · How to adjust

The Trail Fortress check

Will it fit your truck?

✓ Fits

2003–2009 Toyota 4Runner · 4WD
LimitedSportSR5
2007–2009 Toyota FJ Cruiser · 4WD
BaseTrail Teams Special EditionTRD Special Edition

✕ Does not fit

  • PRO Series models
  • Models equipped with KDSS or X-REAS system

Cannot be installed in conjunction with a strut spacer. Fitment on this page is based on the manufacturer’s application data.

About this kit

M1 Loaded Strut Pair, fitment-checked

Rough Country 502161_B is a pair of M1 loaded struts covering 2003-2009 Toyota 4Runner 4WD (Limited, SR5, Sport) and 2007-2009 FJ Cruiser 4WD, including the TRD Special Edition and Trail Teams Special Edition. They cannot be stacked with a strut spacer, and they do not fit PRO Series models or anything running KDSS or X-REAS. Carries a 3 Year Limited Warranty.

This M1 loaded strut pair fits 2003-2009 Toyota 4Runner 4WD and 2007-2009 FJ Cruiser 4WD applications listed in the fitment section. Each strut uses a 46mm monotube body with a 46mm digressive piston and an 18mm centerless-ground, chromed rod, with self-adjusting deflective-disc valving handling rebound and compression as the surface changes. Bodies are zinc plated and the bushings are vulcanized natural rubber. Check the exclusions first — KDSS, X-REAS, PRO Series, and any existing strut spacer rule this pair out. Rough Country lists the job at 2-3 hours, and a downloadable installation guide is available.

What’s in the box

Kit contents

  • 1× M1 Loaded Strut Pair 502161

Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 502161_B kit fits the vehicles shown in the fitment section above.

Specifications

Specs

BrandRough Country
Part number502161_B
UPC / GTIN00840269950865
Shock packageM1 series
Shipping weight39 lb
Warranty3 Year Limited Warranty
Country of originCN
CategorySuspension & Lift Kits › Shocks & Struts

Why buy here

The fitment-first store

Manufacturer-listed exclusions shown. We publish what a part does not fit, before you buy, not after the return.
Sourced from the application data. Fitment on this page comes from the manufacturer’s application catalog, not a copied listing.
Real install docs. The actual step-by-step guide, linked right on the page.

Keep looking

More Shocks & Struts

ICON Vehicle Dynamics 2.5 VS IR Coilover Kit for 4Runner, FJ Cruiser & Lexus GX460
2.5 VS IR Coilover Kit for 4Runner, FJ Cruiser & Lexus GX460
2010–2024ICON Vehicle Dynamics 58646
$1,518.35In stock
ICON Vehicle Dynamics Extended Travel 2.5 VS IR Coilover Kit for 4Runner & GX460
Extended Travel 2.5 VS IR Coilover Kit for 4Runner & GX460
2010–2024ICON Vehicle Dynamics 58647
$1,518.35In stock
Eibach Coilovers, Rear Shocks & Rear Springs for Toyota 4Runner
Coilovers, Rear Shocks & Rear Springs for Toyota 4Runner
2010–2020Eibach E86-82-071-01-22
$1,565.00In stock
ICON Vehicle Dynamics S2 Secondary 2.5 RR CDCV Shock Pair for Toyota 4Runner & Tacoma
S2 Secondary 2.5 RR CDCV Shock Pair for Toyota 4Runner & Tacoma
2003–2024ICON Vehicle Dynamics 59706CP
$1,634.95In stock
Rough Country M1R Reservoir Leveling Struts for 2025–2026 Toyota 4Runner 4WD
M1R Reservoir Leveling Struts for 2025–2026 Toyota 4Runner 4WD
2025–2026Rough Country 684198
$749.95In stock
ICON Vehicle Dynamics S2 Shock Hoop Kit for 4Runner, FJ Cruiser & Tacoma
S2 Shock Hoop Kit for 4Runner, FJ Cruiser & Tacoma
2003–2024ICON Vehicle Dynamics 56102
$668.12In stock
Rough Country M1 Loaded Strut Pair for 1996-2002 Toyota 4Runner
M1 Loaded Strut Pair for 1996-2002 Toyota 4Runner
1996–2002Rough Country 502013
$549.95In stock
Rough Country M1 Loaded Strut Pair for Toyota 4Runner 4WD
M1 Loaded Strut Pair for Toyota 4Runner 4WD
2010–2024Rough Country 502101
$549.95In stock
Rough Country M1 Loaded Strut Pair for 2010–2024 Toyota 4Runner 4WD
M1 Loaded Strut Pair for 2010–2024 Toyota 4Runner 4WD
2010–2024Rough Country 502166
$549.95In stock
Rough Country M1 Loaded Strut Pair for Toyota 4Runner 4WD
M1 Loaded Strut Pair for Toyota 4Runner 4WD
2010–2024Rough Country 502161_A
$549.95In stock
Rough Country 3.5-Inch M1 Loaded Strut Pair for Toyota 4Runner3.5 Inch
3.5-Inch M1 Loaded Strut Pair for Toyota 4Runner
2025Rough Country 502199
$549.95In stock
Rough Country Loaded Strut Pair for 3-Inch Lift — Toyota 4Runner3 Inch
Loaded Strut Pair for 3-Inch Lift — Toyota 4Runner
1996–2002Rough Country 501013
$369.95In stock
Rough Country 3.5-Inch N3 Loaded Strut Pair for 2025 Toyota 4Runner3.5 Inch
3.5-Inch N3 Loaded Strut Pair for 2025 Toyota 4Runner
2025Rough Country 501199
$369.95In stock
Rough Country M1R Monotube Rear Shocks for 2024-2025 Toyota 4Runner 4WD
M1R Monotube Rear Shocks for 2024-2025 Toyota 4Runner 4WD
2024–2025Rough Country 770865RES_B
$349.95In stock
Rough Country V2 Monotube Rear Shocks for Toyota 4Runner & FJ Cruiser
V2 Monotube Rear Shocks for Toyota 4Runner & FJ Cruiser
2003–2024Rough Country 760773_A
$259.95In stock
Rough Country V2 Monotube Rear Shocks for 1990–2002 Toyota 4Runner
V2 Monotube Rear Shocks for 1990–2002 Toyota 4Runner
1990–2002Rough Country 760773_B
$259.95In stock
Rough Country M1 Monotube Rear Shocks for 4Runner & FJ Cruiser
M1 Monotube Rear Shocks for 4Runner & FJ Cruiser
2003–2024Rough Country 770773_A
$179.95In stock
Rough Country M1 Monotube Rear Shocks for Toyota 4Runner
M1 Monotube Rear Shocks for Toyota 4Runner
1990–2002Rough Country 770773_B
$179.95In stock