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Description
07-09 FJ Cruiser 03-09 4Runner 03-09 GX Ext Travel CDCV Coilover Kit Icon Vehicle DynamicsThe ICON Vehicle Dynamics V. S. 2. 5 Series remote reservoir coilover shocks are an incredible upgrade for the front end of the Toyota FJ Cruiser, 4Runner, and Lexus GX platforms. ICON's Vehicle specific valving provides a sport tuned feel on and off road while offering 0 3. 5 Inch of lift height adjustability for use of larger, more aggressive wheel and tire combinations. ICON's larger 2. 5 Inch shock body and increased piston area over stock
The ICON Vehicle Dynamics V.S. 2.5 Series remote reservoir coilover shocks are an incredible upgrade for the front end of the Toyota FJ Cruiser, 4Runner, and Lexus GX platforms. ICON's Vehicle-specific valving provides a sport tuned feel on and off-road while offering 0-3.5 Inch of lift height adjustability for use of larger, more aggressive wheel and tire combinations.
ICON's larger 2.5 Inch shock body and increased piston area over stock components provides improved damping ability and outstanding ride characteristics across varying types of terrain. Remote reservoirs ensure optimum performance by increasing the duration of consistent damping regardless of situation, keeping the shocks at a cooler operating temperature during heavy use.
The ICON CDC Valve upgrade is included for those desiring an easy way to tune the ride externally with 10 adjustment settings from soft to hard. These extended length versions offer increased wheel travel but also require the installation of aftermarket upper control arms in conjunction with the coilovers.
Features and Benefits:- When paired with ICON 2.0 Aluminum Series or 2.5 Series rear shocks, vehicle control will be balanced front to rear resulting in the best overall driving experience for your Toyota or Lexus SUV.
- Adjustable coilovers yield 0-3.5 Inch of front lift height
- Increased wheel travel and vehicle specific valving provides unrivaled ride quality across a wide range of on and off-road use
- Extended Travel length requires installation of aftermarket front upper control arms
- Superior low speed control reduces body roll and increases on-road stability
- External reservoir to attain cooler operating temperatures during extended off-road use
- ICON's CDC Valve technology allows for 10 levels of high-resolution compression adjustability with the turn of a knob
- High quality ICON-engineered coil springs guaranteed for life against sagging or breaking
- Corrosion resistant CAD plated shock body with 7/8 Inch shaft
- FK Rod End bearings provide extended longevity and minimal deflection
- Fully serviceable design allows for revalves, rebuilds, and an immeasurable service life
- Bolt-in design makes for an easy install into OEM shock location
- Material: Steel, Aluminum
- Active Or Passive Suspension: Passive
- Adjustable Compression: Yes
- Adjustable Damping: Yes
- Adjustable Rebound: No
- Adjustable Ride Height: Yes
- Assembled: Yes
- Body Diameter: 2.5 Inch
- Coil Over Springs Included: Yes
- Compressed Length: 17.42
- Cylinder Color: Silver
- Cylinder Finish: Cadmium Plated
- Cylinder Material: Steel
- Damping Adjustment Type: Manual
- Damping Type: Oil
- Dust Shield Included: No
- Extended Length: 22.57
- Front Spring Rate: 650 Inch
- Gas Charged: Yes
- Grade Type: Performance
- Includes Bump Stop: No
- Internal Construction Type: Single Tube
- Lower Mount Type: Eyelet
- Maximum Lift: 3.5 Inch
- Maximum Ride Height Raising Distance: 3.5
- Minimum Lift: 0.0 Inch
- Oem Wheels & Tires Fitment: Yes
- Recommended Aftermarket Tires: 33 Inch X 11.50 Inch (Larger Tires May Fit But Fender Trimming And Modifications Will Be Required)
- Recommended Aftermarket Wheels: Icon Alloys - 17x8.5 Inch W/ 4.75 Inch Backspace / 0mm Offset, Icon Alloys - 18x9 Inch W/ 5 Inch Backspace / 0mm Offset, Icon Alloys - 20x9 Inch W/ 5 Inch Backspace / 0mm Offset
- Remote Reservoir: Yes
- Reservoir Style: Remote
- Self Leveling: No
- Service Parts: 252011 - 2.5 Piggyback/Remote Resi/Bypass Rebuild Kit, 252001 - 2.5 Fixed Spanner Wrench, 611067 - Tacoma/FJ Cruiser 4RNR Lower Co Brg/Spcr Kit, 254100G - 1 Gallon Icon Performance Shock Oil, 611019 - Coilover Hardware Kit Pair, 191016 - 7.5 Inch Finned Resi Upgrade Kit, 252002 - Universal Spanner Wrench (2.0/2.5/3.0), 257301 - 7/8 Shaft 10.25 Oal, 6.00 Travel, 252003 - Seal Install Tool 2.5/3.0
- Shaft Diameter: 0.875
- Shock Absorber Body End Measuring Point: Top Of Upper Mount Plate
- Shock Absorber Rod End Measuring Point: Center Of Eylet
- Spring Color: Black
- Spring Material: Steel
- Spring Rate: 650.0
- Spring Rate Type: Linear
- Travel Length: 5.16
- Upper Mount Type: Mounting Plate
- Valving Type: Digressive
- Add On Part: 252012 - -4 To -10 Hose Shield Kit, 198001 - Billet Spanner Wrench Kit, 198000 - 2 Pin Coilover Spanner Wrench Kit, 191003 - Icon Short 2.5 Coil Wrap W/Logo Pair (11.25-12.25)
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4.5 ★★★★★
Based on 1019 reviews
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Product Reviews
★★★★★ 5
The best on the subject since LDD3
Format: Paperback
I found this book as impacting me as LDD (by Rubini etc) has been in its days, a de-facto standard established to the point that people keep searching for LDD4/LDD5 to these days, that much desirable.
Since LDD3 the last update on 2.6, this book (as well as kernel debugging and hands-on systems programming) is a valuable source of information for modern kernels 5 and 6 for a few years to come.
Knowledgeable and easy to follow, captivating attention to keep on reading it through, impressive for a technical book. LDD4+ has now found reincarnated, thank you very much for all the effort composing it!
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Reviewed in the United States on April 11, 2024
★★★★★ 5
Compelling, informative, and accurate
Format: Kindle
I really could not be happier with the pace and level of detail this book provides. I am a very surface-level Linux user and I wanted to dive in head first. I often find that when I learn about something that I consider really hard or intimidating in tech, I get better at day-to-day use of the tools and my confidence grows. This book is a real confidence-booster if you crave the knowledge of how things work under the hood.
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Reviewed in the United States on October 8, 2024
★★★★★ 5
Great book to read
Format: Paperback, Format: Paperback
Great book to keep you updated about upstream Linux
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Reviewed in the United States on March 18, 2024
★★★★★ 5
A Hands-On and Deep Guide to Linux Kernel Programming
Format: Paperback
Linux Kernel Programming, Second Edition is a very practical and well-structured book for anyone who wants to understand how the Linux kernel works. It focuses on both theory and real hands-on learning. The book uses a clear style and explains complex topics in a simple way. It is designed to help readers build real skills, not just read concepts. It is especially useful for developers who want to work closer to the operating system.
One of the most interesting parts of the book is the strong introduction to kernel programming. It explains how to set up a development environment, build the Linux kernel from source, and write the first kernel module. This section gives readers a solid starting point and builds confidence early in the learning process. It also explains why loadable kernel modules are widely used in real-world projects.
Another highlight is the deep coverage of kernel internals. The book explains core concepts such as kernel architecture, processes, threads, and the difference between user mode and kernel mode. These ideas are often hard to understand, but the book presents them in a clear and structured way. This helps readers see how the operating system really works under the surface.
The memory management section is especially strong and detailed. The book spends several chapters explaining how memory is allocated and managed inside the kernel. It also explains advanced topics such as page allocation, memory reclaim, and the out-of-memory system. These chapters are very useful for understanding performance and stability in real systems.
Another very interesting section is the coverage of CPU scheduling. The book explains how the Linux kernel decides which task runs at a given time. It introduces scheduling policies, priorities, and modern features like control groups. The explanations are practical and supported by examples, which makes the topic easier to follow.
The chapters on kernel synchronization are also a major highlight. They explain concepts such as locks, atomic operations, and deadlock prevention. These topics are critical for writing safe and reliable kernel code. The book also shows real examples and common mistakes, which helps readers avoid problems in their own work.
Another strength of the book is its hands-on approach. It includes many kernel modules, scripts, and examples that readers can try themselves. This makes learning more engaging and helps turn theory into real skills. The focus on practical work makes the book stand out from more theoretical resources.
Overall, this book is a great choice for developers, system programmers, and engineers who want to understand the Linux kernel in depth. It starts with the basics and moves into advanced topics in a smooth way. The combination of clear explanations and practical examples makes it a strong and valuable learning resource.
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Reviewed in the United States on April 16, 2026
★★★★★ 4
Poor quality binding
Format: Paperback, Format: Paperback
Binding glue fell apart in less than a week and the pages fell out. Content is great though and I have a shiny new kernel based on Kali. 4 stars despite the binding because the content is top tier if you love all things Linux 🤌
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Reviewed in the United States on July 4, 2025