The rear suspension of a 2001 Subaru Forester is responsible for ride comfort, handling, and stability. Over time, components wear out, leading to sagging, clunking noises, or poor alignment. Whether you're replacing worn parts or upgrading for better performance, understanding the options helps you make an informed decision. This guide covers the essential rear suspension parts for the 2001 Forester, what to look for when buying, and practical advice for installation.
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TRQ Rear Suspension Kit Compatible with 2000-2004 Subaru Outback
Overview of the 2001 Forester Rear Suspension
The 2001 Forester uses a fully independent rear suspension with a multi-link design. Key components include struts, coil springs, control arms, sway bar links, and trailing arms. The system is known for durability, but after 20+ years, rubber bushings dry out and metal parts can rust, especially in salt-belt states.
Signs You Need Rear Suspension Replacement
- Rear end sagging or sitting lower than normal
- Bouncy or harsh ride over bumps
- Clunking or knocking from the rear
- Excessive body roll in turns
- Uneven tire wear
- Knocking when going over speed bumps
If you notice any of these, inspect the rear suspension components. Often, struts and springs are the first to wear out, but bushings and links also fail.
Choosing Between OEM and Aftermarket Parts
OEM Parts
Original equipment manufacturer (OEM) parts from Subaru guarantee fit and performance matching the factory specifications. They tend to be more expensive but are reliable. For a daily driver that you want to keep stock, OEM struts and springs are a safe choice.
Aftermarket Parts
Aftermarket parts offer a wider range of options, from budget-friendly replacements to high-performance upgrades. Brands like KYB, Monroe, Moog, and Eibach produce components specifically for the 2001 Forester. Aftermarket springs can lower the ride height or increase load capacity. However, quality varies, so stick with reputable brands.
Key Rear Suspension Parts Explained
Rear Struts
The rear struts are a critical component combining a shock absorber and a structural support. For the 2001 Forester, common replacements include the KYB Excel-G (GR-2) for a comfortable ride, or Monroe OESpectrum for a balance of comfort and handling. If you carry heavy loads, heavy-duty struts are available. Struts often come as a complete assembly with a new spring for easier installation, but you can also buy just the strut and reuse the spring.
Coil Springs
Rear coil springs support the vehicle's weight and absorb bumps. Over time, springs can sag, reducing ride height. OEM replacement springs restore stock height. For a lift or increased load capacity, consider aftermarket springs like those from King Springs or Moog. Lifting springs are popular among Forester owners who take their car off-road.
Control Arms
The rear suspension has upper and lower control arms that locate the wheel. The bushings in these arms wear out, causing clunking and poor alignment. Moog and OEM control arms come with new bushings. Alternatively, you can press in new bushings and reuse the arms to save money. Control arms with ball joints are also available if the joint is worn.
Sway Bar Links
The rear sway bar reduces body roll. The links connecting the sway bar to the suspension often develop play. Replacing them is a quick and inexpensive fix for a clunking noise. Moog and OEM links are reliable. Upgraded aftermarket links with polyurethane bushings can improve handling.
Trailing Arms
Trailing arms control fore-aft movement of the rear wheels. Bushings here can also wear out. Some aftermarket trailing arms are adjustable, allowing for camber adjustment after a lift or significant height change.
Miscellaneous Parts
- Bump stops: Rubber stops that prevent metal-to-metal contact when suspension bottoms out. Replace if cracked or missing.
- Strut mounts: Metal top mounts that can rust or fail. Usually included with loaded strut assemblies.
- Dust boots: Protect the strut shaft from debris. Replace with struts.
Installation Considerations
Replacing rear suspension parts on a 2001 Forester is a moderate DIY job if you have basic mechanical skills, a jack, jack stands, and spring compressors. Safety is paramount: coil springs are under high tension. When removing struts, check for rusted bolts that may require penetrating oil and impact tools. After replacing any suspension component that affects alignment (struts, control arms, trailing arms), a professional alignment is strongly recommended to prevent tire wear and ensure safe handling.
Tools and tips:
- Jack and jack stands
- Spring compressors
- Torque wrench
- Penetrating oil (PB Blaster)
- Anti-seize compound on bolts
- A second person can help with aligning parts.
Budget vs Performance Parts
For a budget-conscious daily driver, KYB Excel-G struts and Moog control arms offer good value. Expect to spend around $200-$400 for a complete set of rear struts and springs, plus $100-$200 for control arms and links. RockAuto and other auto parts stores carry these brands.
For performance or off-road use, consider KYB AGX adjustable struts (though they may be discontinued for the rear, check availability) or Bilstein struts for a firmer ride. Lifting springs from King Springs add clearance for larger tires. Adjustable trailing arms allow for fine-tuning alignment after a lift. Budget extra for these upgrades.
Recommendation: Best Options for Your 2001 Forester
For daily driving:
- KYB Excel-G rear struts (with new bump stops and dust boots)
- OEM or Moog coil springs
- Moog sway bar links
- Moog control arms with bushings pre-installed
For off-road or lifted applications:
- King Springs raised rear springs (1-2 inch lift)
- KYB GR-2 struts (compatible with lifted springs)
- Adjustable rear trailing arms (SPC or similar)
- Heavy-duty sway bar links
Important: Always replace struts in pairs (both rear). If your Forester has high mileage (over 150k), consider replacing all related parts at once to avoid repeat labor. A complete rear suspension overhaul can restore the handling and ride of a new car.
Final Thoughts
The 2001 Subaru Forester is a reliable vehicle, but its rear suspension parts will eventually need attention. By understanding the components and your options, you can choose parts that match your driving style and budget. Consult a professional mechanic if you're unsure about any step. Properly maintained rear suspension ensures safety, comfort, and longevity for your Forester.