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Description
2021-2024 Ford F-150 4WD 3.5-4.5 Inch Lift Stage 4 Suspension System Billet CDCV W/ Leaf Packs Icon Vehicle DynamicsICON Vehicle Dynamics 2021 2024 Ford F 150 4WD suspension systems are designed with maximum performance and the serious driver in mind. ICON's primary focus is to increase wheel travel and damping ability, which translates into outstanding vehicle control and ride quality. To achieve this, these systems include high strength CNC machined ductile iron steering knuckles that replicate the suspension geometry of the F 150 Tremor and are effectively a
ICON Vehicle Dynamics 2021-2024 Ford F-150 4WD suspension systems are designed with maximum performance and the serious driver in mind. ICON's primary focus is to increase wheel travel and damping ability, which translates into outstanding vehicle control and ride quality.
To achieve this, these systems include high-strength CNC machined ductile iron steering knuckles that replicate the suspension geometry of the F-150 Tremor and are effectively a Tremor Inchconversion Inch for your F-150 4WD. This Stage 4 system includes vehicle-specific tuned 2.5 Inch coilover shocks featuring CDCV equipped remote reservoirs for exceptional cooling properties and ICON-engineered coil springs for superior vehicle Inchfeel Inch through the range of travel.
These coilovers are adjustable for 3.5-4.5 Inch of front lift, allowing the use of larger, more aggressive wheel and tire combos. Their combination with the ICON steering knuckles also allows for a 20 Percent increase in wheel travel compared to other ICON F-150 kits.
Billet aluminum Delta Joint PRO upper control arms not only add strength and durability but help retain factory alignment specs, offer on-vehicle caster/camber adjustment, and allow for the extra lift height this system provides. ICON 2.5 Aluminum Series CDCV piggyback reservoir rear shocks utilize vehicle-specific valving and offer increased damping and heat dissipation, balancing the performance of the truck from front to rear.
The included ICON CDC Valves are externally adjustable valves that restrict oil flow into the reservoir which creates 10 levels of compression damping force ranges. ICON Multi-Rate Leaf Springs allow rear spring rate and ride height customization, improve ride quality, and reduce axle wrap by eliminating the factory rear blocks.
Rear ride height is kept within an acceptable range using the ICON billet aluminum 1 inch lowering shackles. The ICON 2021-2024 F-150 4WD Stage 4 suspension system is an excellent choice for those looking to enhance the capabilities of their pickup.
Features and Benefits:- This system features upper control arms with ICON's patented Delta Joint PRO. Delta Joint PRO is ICON's innovative new suspension articulation joint which combines the durability and longevity of factory style ball joints with performance and strength that exceeds traditional motorsports-style ball joints. The Delta Joint PRO features a new rebuildable, serviceable design in which any component may be removed, inspected, and replaced without having to purchase a whole new joint. Strength and durability are improved by using a larger ball with 56 Percent more bearing surface than our standard Delta Joint, along with improved lubrication sealing. But improved performance is at the heart of the Delta Joint PRO, with a full 90 degrees of articulation, from one extreme to the other. This represents a 14 Percent improvement in range of motion, over the highly capable original Delta Joint, allowing for maximum bind-free suspension movement through the complete range of travel. The Delta Joint PRO is built to take the abuse, with a chromoly ball and shaft that has a bearing surface hardened to Rockwell C 55. The replaceable races are made of graphite-impregnated sintered metal, machined to the finest tolerance to provide a flawless, metal-to-metal bearing interface. We also redesigned the lubrication system, with lubricant channels that distribute grease more efficiently without extending past the bearing seal.
- MULTI-RATE INFO (with ICON Billet Shackles):
- Option #1 (as shipped)
- +1.50 inch rear lift height over stock (unloaded)
- Option #2
- +20 Percent spring rate over Option #1
- +2.75 Inch rear lift height over stock (unloaded)
- +1.50 inch rear lift height over stock w/ 400lb constant load
- Option #3
- +40 Percent spring rate over option #1
- +3.50 inch rear lift height over stock (unloaded)
- +1.00 inch rear lift height over stock w/ 850lb constant load
- High strength ductile iron steering knuckles replicate F-150 Tremor suspension geometry
- Adjustable coilovers offer 3.5-4.5 Inch of front lift height over stock
- 2.5 Series front coilovers with remote reservoirs for improved shock cooling
- Billet Upper Control Arms with Delta Joint Pro ball joints for added strength, durability, and alignment spec range with on-vehicle adjustability
- 20 Percent increase in front wheel travel and improved ride quality over stock with no change in towing capacity
- Vehicle specific tuned front and rear shocks for superior damping and vehicle control
- All shock absorbers equipped with CDC Valves for 10 settings of compression damping adjustment, from soft to hard
- Corrosion resistant CAD plated coilover shock bodies with 7/8 Inch shafts
- FK rod end bearings for extended longevity and minimal deflection
- High strength alloy CNC machined lower bar pin
- 2.5 Aluminum Series piggyback reservoir rear shocks with 7/8 Inch hardened chromed steel shafts
- 6061 Aircraft grade aluminum CNC machined components
- 3 user-adjustable rear spring rates for unique vehicle setups
- Reduced rear axle wrap and improved ride quality compared to stock leaf springs
- Billet aluminum lowering shackles feature maintenance and noise free OE Ford bushings
- 100 Percent Bolt-on system - no cutting or welding necessary for install
- Active Or Passive Suspension: Passive
- Adjustable Compression: Yes
- Adjustable Control Arm: Yes
- Adjustable Damping: Yes
- Bushings Included: Yes
- Coils Quantity Front: 2.0
- Damping Adjustment Type: Manual
- Front Reservoir Style: Remote
- Front Shock Body Diameter: 2.5
- Front Spring Rate Type: Linear
- Grade Type: Performance
- Leaf Spring Leaf Quantity: 8.0
- Maximum Lift: 4.5 Inch
- Maximum Lift Front: 4.5 Inch
- Maximum Lift Rear: 3.5 Inch
- Minimum Lift Front: 3.5 Inch
- Minimum Lift Rear: 1.5 Inch
- Mounting Hardware Included: Yes
- Oem Wheels & Tires Fitment: Not Compatible With All Available OE Wheel/Tire Combinations. Aftermarket Wheels With Lower Offset/Less Backspace Recommended.
- Rear Reservoir Style: Piggyback
- Rear Shock Body Diameter: 2.5
- Rear Spring Rate Type: Variable
- Recommended Aftermarket Tires: 34 Inch X 12.50 Inch (Larger Tires May Fit But Fender Trimming And Modifications Will Be Required)
- Recommended Aftermarket Wheels: Icon Alloys - 18x9 Inch W/ 5.25 Inch Backspace / 6mm Offset, Icon Alloys - 20x9 Inch W/ 5.625 Inch Backspace / 16mm Offset, Icon Alloys - 17x8.5 Inch W/ 5 Inch Backspace / 6mm Offset
- Shocks Included: Yes
- Spring Color: Black
- Spring Material: Steel
- Add On Part: 191014 - .25 Inch Collar Spanner Pin Wrench, 191013 - Nipple Greasing Adapter Kit, 198001 - Billet Spanner Wrench Kit, 191009 - Icon Long 2.5 Coil Wrap W/Logo (14.5-15.5), 198000 - 2 Pin Coilover Spanner Wrench Kit, 611081 - F-Series Dynamic Headlamp Rear Sensor Kit, 611071 - 21-24 F150 Dynamic Headlamp Kit
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Good book
Format: Kindle
This is my first book by this author and I loved it so much. Such a cute story. I absolutely loved reading Knox and Avery's story. Knox is a motocross racer and Avery is a gymnast. Knox lost his spot with his team for not being a team player. He is bummed out because racing has been all he really wanted to do. Knox lost his mom when he was a teenager and he took on a pretty big responsibility helping take care of his brothers. He has an older brother who went to college and then two younger ones that also ended up going to college and then there's the youngest one that's a senior in high school. Knox is a great big brother but really wants to race so his friend Colter, who does freestyle tricks on bikes, talks him into trying to do trick riding too.
Avery hurt her knee a bit ago which she did therapy for but is really aware of her knee now and just doesn't have the confidence like she used too. Avery goes out with her friend to a party to get out of her head and there she sees Knox. He's on his bike but he almost got her and from there it starts there relationship of having snarky comments to each other. Avery helped Knox' friend Colter do some gymnastic workouts to get his strength and learn some tricks for his trick riding. Colter recommends Knox work with her too. Knox takes him up on this because Knox needs this to show people in motocross racing he can be a team player.
Knox and Avery end up getting a long better and you can feel the chemistry between the two but both don't want a relationship for different reasons. Things heat up between the two of them. Lots more happen in this book and you will want to read to find out what that is. Will Avery and Knox be able to get over their fears and be together? Have to read to find out. Thank you Rebecca Jenshak for this book.
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Reviewed in the United States on April 28, 2024
★★★★★ 4
Solid start to a new series! Love the Holland brothers
Format: Kindle
There is one thing I've learned when I read Rebecca books: I either love them and am obsessed (looking at you "Tutoring the Player") or I really like them, but feel like there's something missing. And this book fell in the latter.
Ok, so, I did really enjoy this book. I was so excited to get to know the younger Hollands after meeting Hendrick in "Tempting the Player." I was so intrigued by their dynamics, so when I saw those Holland brothers were getting a series, I was SOLD. And I'm not gonna lie, I really enjoyed grumpy and closed-off Knox Holland. The relationship he has with his brothers is special, but especially the one he has with his youngest brother, Flynn. And that, alone, made me fall in love with him. But watching as Avery wore him down, without even trying, was the best. And how he didn't even realize it was happening? Even better.
Avery was awesome! I LOVED her! She's had a rough go after an injury at the end of her freshman year at Valley U, and it's really rocked her confidence as she works to come back. She was funny and the way she fit in with the Holland brothers was perfect... especially the way she cared for Flynn. I loved the banter and way she goes back and forth with Brogan too. That guy is hilarious. She just...fits, and they all can see it.
The only thing that kept this from a 5 star for me was that it just felt like it...ended. We have the conflict, we get back together, but then, it's a super quick last chapter, no epilogue, and it's over. I really wanted to see at least a little more of them as an official couple. I do love how you could see how close she and Flynn are in the last chapter. And how even though the others have moved on to other things (Archer and Brogan the NFL, Henny and Jane are married), they're still such a tight family unit.
There is a super short but sweet epilogue you can get at the end of the book if you sign up for Rebecca's newsletter (which, duh, I already get because I do love her books!). Overall, I really enjoyed this book, but I have to say, the level of excitement I have for Archer and Flynn, but Archer especially, is next level!
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Reviewed in the United States on June 22, 2025
★★★★★ 5
I loved it so much!!!
Format: Kindle
I've had this one on my TBR lis forever and been meaning to get to it. Considering I picked up the ebook last year not long after it came out. I can't believe I let this one sit on my kindle for as long as I did. I ended up starting and finishing in just one afternoon absolutely hooked on Avery and Knox. They has this connection that just works even if they are to stubborn to see what's happening. I loved the whole bad buy meets the good girl in this sweet steamy enemies to lovers romance.
The author does a beautiful job creating a captivating story with characters you can't help falling in love with. This is my first book by the author and I'm a fan as I enjoyed every moment of Avery and Knox's story. I loved that we get to know a little bit of Knox's brothers as the series is about them and can't wait to devour there stories too. Highly recommend the characters are engaging and the story is perfectly balanced with just the right amount of romance. This one made me want to look up the riding that Knox did off season and it's impressive. I loved it!!! One of my favorite books of 2025.
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Reviewed in the United States on May 5, 2025
★★★★★ 4
Good Sports Romance
Format: Kindle
Knox is a motor cross racer and Avery is a gymnast. Seems like opposites, right? But there is much more common ground. This couple is fantastic together and love the friends and family vibes. Can’t wait to read the rest of the books in the Holland Brothers series and go back to read Hendrick and Jane’s story.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Holland Brothers Series !!!
Format: Kindle
5/5 ⭐️ 2/5 🌶️
A Holland Brothers Series was exactly what i was hoping for since i read Tempting the Player. Rebecca gave us all exactly what we wanted a Holland brother series and kicked it off with Knox. Knox is the broody, grumpy, closed off, and the 2nd oldest brother who stepped up and held down the fort taking care of the younger brothers after their mom passed and dad stopped coming around but gave up his dreams/ wants in order to do so. With Hendrix, the oldest brother from TTP, back home Knox can go live out his dream as a pro motocross rider. After something goes down between him and his teammate, he’s left without a team and ends up back home and ends up asking the help of a friend of a friend to train him who is Avery. Avery is a college gymnast with two Olympic medals and last season she choked and injured herself before she was able to compete. She’s doesn’t want a distraction but agrees to train Knox which should be easy but it turns out to be anything but that. The banter and argue and then everything changing when his shirt comes off and she spends a little too much time admiring his body in a handstand. These two balanced each other out so well it’s hard to deny even to them. Overall i loved the plot and the character development between these two, the spice, the banter, the nicknames it was all just …..chefs kiss 💋. I cant wait to see which Holland brother Rebecca has in store for us next!
🏍️ Sports Romance
👑 Opposites Attract
🏍️Enemies to Lovers
👑 Train Together
🏍️ Banter
👑 Motorcross x Gymnast
🏍️ Bad Boy x Good Girl
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Reviewed in the United States on April 24, 2025