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Description
Synergy 8503-11 3" Long Arm Lift Kit Suspension SystemLift your 2003 2009 Dodge Ram 2500 3500 5. 9 6. 7L Diesel 4WD with the Synergy 8503 11 3" Long Arm Lift Kit Suspension System from GAP. Synergy MFG Suspension Systems use a synergistic approach, meaning the combined effect of the components is greater than the sum of the individual parts. The overall performance of the system is the most important factor when designing components to work together. Synergy MFG Suspension Systems are complete systems
Lift your 2003-2009 Dodge Ram 2500/3500 5.9/6.7L Diesel 4WD with the Synergy 8503-11 3" Long Arm Lift Kit Suspension System from GAP. Synergy MFG Suspension Systems use a synergistic approach, meaning the combined effect of the components is greater than the sum of the individual parts. The overall performance of the system is the most important factor when designing components to work together. Synergy MFG Suspension Systems are complete systems for your vehicle and include all necessary components for the lift height and performance advertised.
Engineered and manufactured in the USA, the 3" Dodge Long Arm System is designed for increased performance, stability, and ride quality both on and off road. The massive 2" diameter front lower long arms offer best in class ground clearance and allow the use of larger tires without rubbing. No bump stop spacers required. Long arms and track bar feature zero maintenance Dual Durometer Bushings (DDB) for increased longevity and vibration dampening. This system will lift the truck 3" and accommodate up to 37" tall tires.
Features:
- Lower Adjustable Long Arms Are Manufactured From High Quality Crush Resistant 2.00" X .250" Wall 1026 DOM Tubing
- Upper Adjustable Control Arms Are Manufactured From High Quality Crush Resistant 1.75" X .188" Wall 1026 DOM Tubing
- Suspension Components Feature An Abrasion-Resistant Powder Coat Finish For Maximum Durability And Corrosion Resistance
- Synergy Double Adjuster Sleeve & Pinch Bolt Assembly Allows For Adjustment Of Control Arm And Track Bar Length Without Removal
- Heavy Duty Front Track Bar Made From High Quality 1.5" X .250" Wall 1026 DOM Tubing Allows Centering Of Front Axle When Running A Suspension Lift
- Long Arms And Track Bar Feature Synergy Dual Durometer Bushings (DDB) With Teflon Bearing Surface For A Maintenance Free Design Focusing On Performance, Flex, Longevity, And Ride Quality
Benefits:
- Heavy Duty Sway-Bar Links Correct Sway Bar Geometry And Maximize Stability
- Heavy Duty Rear Shackles Provide A Minimal Amount Of Lift While Keeping The Rear Driveline Angles Correct
- Progressive Wound Coil Spring Manufactured Using The Latest In CNC Hot Winding Technology For Optimized On And Off Road Performance
- Rear Ad-A-Leaf Pack Is A Progressive 5 Leaf Design That Replaces The Factory Overload Spring For Improved Ride Quality Both On And Off Road
- Cam Bolt Eliminator Kit Takes The Place Of Stock Control Arm Cam Bolts When Upgrading To Adjustable Control Arms For Improved Reliability
8503-11 Includes:
(1) 8515-11 Synergy Front Sway Bar Links
(1) 8555-30-HD Synergy Front 3.0" Coil Springs
(1) 8566-01 Synergy 1.0" Lift Rear Shackles
(1) 8550-11 Synergy Adjustable Front Track Bar
(1) 8581 Synergy Long Arm Brackets
(1) 8583-04 Synergy Adjustable Front Lower Long Arms
(1) 8585 Synergy Adjustable Front Upper Long Arms
(1) 8516-02-40 Synergy Rear Add-A-Leaf Pack
(1) 8565-02 Synergy Cam Bolt Eliminator Kit
(1) 8555-30-HD Synergy Front 3.0" Coil Springs
(1) 8566-01 Synergy 1.0" Lift Rear Shackles
(1) 8550-11 Synergy Adjustable Front Track Bar
(1) 8581 Synergy Long Arm Brackets
(1) 8583-04 Synergy Adjustable Front Lower Long Arms
(1) 8585 Synergy Adjustable Front Upper Long Arms
(1) 8516-02-40 Synergy Rear Add-A-Leaf Pack
(1) 8565-02 Synergy Cam Bolt Eliminator Kit
Notes:
To prevent front tires from rubbing the control arms at full steering lock, Synergy recommends the following wheel/tire combinations:* Same size tires will dimensionally vary from manufacturer to manufacturer.
Most* 37-inch tires - wheels must have no more than 4.5-inches of backspacing
Most* 40-inch tires - wheels must have no more than 3.75-inches of backspacing
Same size tires will dimensionally vary from manufacturer to manufacturer.
Most* 37-inch tires - wheels must have no more than 4.5-inches of backspacing
Most* 40-inch tires - wheels must have no more than 3.75-inches of backspacing
Same size tires will dimensionally vary from manufacturer to manufacturer.
Due to the additional weight of Mega Cab truck configurations, Synergy recommends all gas Mega Cab trucks use Heavy-Duty (HD) front coil springs instead of Light Duty (LD) front coil springs. LD front coil springs will give less lift than advertised.
Upgrading to long arms requires removal of the stock control arm brackets at the frame.
Applications:
2003-2009 Dodge Ram 2500 4WD (6.7 Diesel)2003-2009 Dodge Ram 3500 4WD (6.7 Diesel)
2006-2008 Dodge Ram 1500 Mega Cab 4WD
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
4.3 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
Nice elegant suit for any occasion.
Color: Light Blue, Size: 12, Color: Light Blue, Size: 12
The suit set is very nice, the fabric material is durable and soft. Overall stitching is tight with nice surging of the hems and great construction on the shoulders. Buttons and button wholes are well done. I'm going to iron in the creases on the front of the pants because they weren't folded properly for shipping. The material does hold on to wrinkles so don't be afraid of your iron to get a super sharp look.
The color is a soft baby blue that stands out in a crowd of black suits. With the option of an elastic tie or clip on bowtie this is everything you need to make him look presentable for a variety of occasions.
My only complaint about this suit kit is the dress shirt is stiff and thin. I found some loose threads that I don't trust to not get played with. I'll probably trade it out for something with a little more cotton.
As far as cost goes mid range, but definitely worth the cost. I might consider something with a vest if it's a super formal event, but I'm very happy with how this suit comes together.
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Modern luxury with summer fabric that performs above its price!
Color: Beige, Size: 14, Color: Beige, Size: 14
Wow! My son wore it for Easter Sunday and this suit fits the bill! The linen material is spot on--not too heavy and not too light especially since the weather is warming up now. The jacket is quality made--the design is modern executive, the stitches are strong no flaws to note. The pants are tad bit longer but that's okay, build quality is also great. The white shirt is decent and matches well with the rest of the set. The bow tie and tie itself is a great complimentary to the set, though optional to wear. The whole set just has that quality you would really look for in the price range you would want to pay. Overall, best value for for the, wear right outside the bag, maybe a light ironing otherwise it's perfect! I highly recommend it, no complaints here very happy with this suit!
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Reviewed in the United States on April 5, 2026
★★★★★ 4
Heavy linen character, but a beautifully tailored suit!
Color: Beige, Size: 4, Color: Beige, Size: 4
This is a really nice linen suit! The jacket is beautifully made and well-tailored, with a fun speckled texture that has lots of pretty color variation (we ordered the beige). When I placed it side by side with a similar linen suit from another brand, the difference in the linen texture was really noticeable — this had a much stronger linen character that stands out!
It has three useful pockets on the outside of the jacket, which is great for little hands. The only downside is that one of the inside pockets is just for show (faux), which was a bit surprising and somewhat disappointing for my little guy.
The pants have pockets too, but they aren’t very deep — perfect for small treasures, but not much more. The pants are made from a lighter, thinner single-layer linen compared to the fully lined, double-layer jacket, which makes sense for comfort and easy movement.
The pants didn’t come with a front crease ironed in, so you’ll want to press one yourself. The linen did pick up some creases from being folded in the package, but it doesn’t seem quite as wrinkly as some other linen fabrics I’ve tried. Still, like most linen clothes, especially for boys, the pants will need occasional ironing to keep them looking neat and crisp, especially after a day of play and general wear. The structured, lined jacket stays looking smoother and more put-together with less effort.
It also came with a bow tie, a neck tie, and a tuxedo-style white shirt as extras. The ties aren’t great quality — they’d work fine for quick photos but probably won’t hold up to much actual wear. The formal white shirt feels a bit funny paired with the casual linen suit, but I don’t mind at all. We already have white shirts that we prefer, so we’ll use those instead. For us, the extras are really just bonus items we won’t plan on using.
Overall, it’s a handsome little suit that’s perfect for special occasions like weddings, family photos, or holiday events. My kid looked adorable in it! The stronger linen texture on the jacket gives it a premium feel that I really like. Just be ready for a bit of extra care with the pants to keep everything sharp.
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Reviewed in the United States on April 8, 2026
★★★★★ 5
Great suit set
Color: Light Grey, Size: 4
It is incredibly attractive and includes everything a young child needs for a special occasion.
The material is a 75% polyester and 25% linen blend, and the outer fabric feels remarkably smooth. Its unstructured design allows for an attractive, natural drape, and the blend conveniently allows for machine washing at home.
As is typical with linen-based materials, the fabric can be naturally stiff and prone to wrinkling, so I recommend ironing or steaming it before use. The lightweight feel makes it an excellent choice for the spring, summer, and fall months.
Overall, this suit offers exceptional value for the price.
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Reviewed in the United States on April 12, 2026
★★★★★ 5
Samsonite? I was way off!
Size: 8, Color: Light Blue, Size: 8, Color: Light Blue
Linen was a nice enough material and slightly distracted from the dumb&dumber blue motif. The regular suit material would have been a full homage. It is what he wanted so this was a fair compromise. Stats/ he is a size 8 in most brands, 51in and 60lbs. Purchased an 8.
A size 7 would have been a better choice and more tailored look but this fit fine in the important places and he has room to grow. Short notice, quick shipping and fair quality for the price. May your Harry Dunne love it as much as mine did.
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Reviewed in the United States on May 8, 2026