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SKU: 5540041 | UPC: 197244123876
KYB 03-09 Toyota 4Runner (Exc. X-Reas, Adj Susp.) Gas-A-Just Shock - Rear
KYB Gas-A-Just Rear Shock part 5540041 installs on 2003-2009 Toyota 4Runner excluding X-REAS and adjustable suspension plus select 2007-2009 FJ Cruiser models. Monotube construction with nitrogen gas charging controls body roll and maintains tire contact for handling on paved roads and trails. This rear shock restores factory ride dynamics while adding response to daily driving and off-road conditions with 25.12 inch extended length and 15.00 inch compressed length.
Key Features
- Monotube Design: Single tube layout resists fading for steady performance during extended drives or heavy loads
- Nitrogen Gas Charging: High-pressure gas prevents oil foaming to keep damping force consistent over bumps
- Application-Tuned Valving: Multi-stage valves match 4Runner and FJ Cruiser suspension for balanced ride comfort and control
- Seamless Steel Tube: Inverted construction adds strength without welds to handle rugged terrain impacts
- Machined Mounts: Solid eye and fork attachments ensure direct bolt-on fit without modifications
Product Notes
- Excludes vehicles equipped with X-REAS air suspension or adjustable height systems
- Sold as single rear shock verify pair needed for complete replacement
- Handles up to 25.12 inch extended length and 15.00 inch compressed length
Installation Notes
- Professional installation recommended.
- Use OEM or KYB replacement bushings RB2280 top and SB131 bottom
- Compatible with S1 upper mount and LS30 lower mount positions
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2003-2009 | Toyota | 4Runner | Limited |
| 2003-2009 | Toyota | 4Runner | Sport |
| 2003-2009 | Toyota | 4Runner | SR5 |
| 2007-2009 | Toyota | FJ Cruiser | Base |
| 2008 | Toyota | FJ Cruiser | Trail Teams Special Edition |
| 2007 | Toyota | FJ Cruiser | TRD Special Edition |
Why Choose KYB?
- KYB supplies over 55 million shocks yearly to vehicle manufacturers worldwide
- Meets or exceeds original equipment specifications for reliable long-term service
- Engineered with vehicle-specific testing for precise damping on Toyota platforms
Frequently Asked Questions
-
Q: Will this shock fit a 2006 Toyota 4Runner SR5 with standard suspension?
A: Yes it bolts directly to 2003-2009 4Runner SR5 models without X-REAS or adjustable suspension using S1 upper and LS30 lower mounts -
Q: What construction materials are used in this shock?
A: Steel monotube body with high-pressure nitrogen gas zinc plating for corrosion resistance and durable rubber bushings -
Q: What warranty coverage applies?
A: KYB offers limited lifetime warranty against manufacturing defects when installed properly
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Cardboard box 26in L x 4in W x 4in H
- Weight: 5.1 lbs
KYB
KYB shocks and struts are stocked at Black Ops Auto Works across nearly every domestic and import platform, from the Dodge Durango and Chevrolet Silverado to the Ford F-150 Lightning, Toyota Camry, and Nissan Leaf. Shop Excel-G gas shocks, Strut-Plus complete strut assemblies, Gas-a-Just performance shocks, MonoMax heavy-duty truck shocks, and Truck-Plus components for cars, crossovers, and full-size trucks. KYB is an OEM shock and strut supplier to major automakers, which means fitment data here is built on genuine OE-level application charts. Black Ops Auto Works carries 967 KYB SKUs spanning strut assemblies, shocks, mounts, and steering stabilizers. What This Brand Covers KYB manufactures shocks and struts as both an original equipment supplier to vehicle manufacturers and an aftermarket replacement parts brand, giving it OE-level engineering and fitment accuracy across an extremely broad range of makes and models. Product lines span from economy sedans to heavy-duty trucks,...
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