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Description
2008-2008 Ram HD 6" Long Arm Conversion Kit with NX2 Nitro Shocks (BDS689H)BDS engineered this 6" lift kit with long arm conversion for the 2008 Dodge Ram 2500 and 3500 4WD gas truck, with clearance for up to 37" tires. Up front it runs gas specific Pro Ride progressive rate coil springs, all four long control arms plus mounting brackets, a forged drop pitman arm and track bar drop bracket for steering correction, bump stops, sway bar links and NX2 Nitro nitrogen charged shocks. The long lower arms retain factory
BDS engineered this 6" lift kit with long arm conversion for the 2008 Dodge Ram 2500 and 3500 4WD gas truck, with clearance for up to 37" tires. Up front it runs gas-specific Pro-Ride progressive rate coil springs, all four long control arms plus mounting brackets, a forged drop pitman arm and track bar drop bracket for steering correction, bump stops, sway bar links and NX2 Nitro nitrogen charged shocks. The long lower arms retain factory triangulation to reduce caster change through travel for a more controlled, stable feel. In the rear it uses heavy duty cast steel blocks, longer u-bolts and a matching set of NX2 Nitro shocks.
Features
- Tubular long arms reduce caster change and create more controlled feeling on and off road
- Heavy duty control arm brackets maintain proper suspension geometry
- Front high strength progressive rate coil springs for a great ride on any terrain
- Front track bar relocation bracket to re-position axle
- Forged drop pitman arm to correct steering angles
- Front sway bar correction to maintain handling performance
- BDS NX2 Nitro IFP gas shocks for improved ride and offroad performance
- Nitrogen-charged
- Twin-tube design
- 10-stage velocity-sensitive valving
- Dual-welded ends for increased strength
- 1-3/8" high-flow piston
- Self-lubricating seals
- Silver powder coat finish
Specs
- Front Lift Method: Coil Spring
- Rear Lift Method: Block
- Shocks Included: Yes
- Front Lift Height: 6 inch
- Rear Lift Height: 4 inch
Notes
- Measure rear axle tube before ordering. Some 4" axle models with dual overloads will require u-bolt 4068.
- Power Wagon applications require sway bar link kit 122401. The Power Wagon has a 2" taller ride height, so net lift gain will be 4".
- If driveline vibration occurs, order transfer case index kit 122801 or 122802.
- If your truck has had the steering gear box changed and the sector shaft diameter measures 1-1/2" to 1-5/8", you will need to add part BDS082404 to your kit.
Includes
- BDS002508, 03-05 Dodge 3/4 ton 5in Rear Spring (UPC 658848611294)
- BDS012602, 08 Ram 6 Inch Long Arm Box kit (UPC 658848612680)
- BDS012801, Dodge Control Arm Mounts (UPC 658848612840)
- BDS012802, Dodge Control Arm Box Kit (UPC 658848612857)
- BDS032601, 03-12 Dodge Ram 2500(gas) 6 Inch Coil Kit (UPC 658848616411)
- BDS85750, Shock- 27.40 x 16.20 x 2-3/8 - S50/EB2 (UPC 711745609600)
- BDS85761, Shock- 33.00 x 19.25 x 2-3/8 - EB1/EB1 (UPC 711745609709)
- UBT4067, 9/16 x 4 x 12-1/2 Round U-bolt (UPC 711745613003)
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
Would Buy Again!
Color: Black, Style: With Headrest, Color: Black, Style: With Headrest
Purchased this chair several months ago and very pleased with the quality, durability, lumbar support, head rest, rollers and multiple adjustment. I use it some 8 hours a day, it's very comfortable, and highly recommend. Thus far great product for the value.
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Reviewed in the United States on June 2, 2026
★★★★★ 3
Needs improvements
Color: Light Black, Style: With Headrest
I bought 4 chairs for my table.
Easy to put together.
The arms are too short. They move too much and there is no way to lock the arms in place.
The worse thing is the material used to cover the arms. It is sticky. Each chair has the same problem so I took a pair of socks to cover the arms. So, you should offer custom arm covers and a way to lock the arms.
For the weight allowed the pneumatic support that holds and adjusts the height of the seat holds me quite well.
The wheels stick out beyond the seat circumference so everyday I run into them as I go to sit down but it is a good thing as you can be seated and you are not going to flip over if you bend down from the seat to reach for something on the floor.
The seat itself should be able to accommodate a person of a larger size a big man. It is like you made the chair for little people that weigh a lot (narrow seat, short arms, vs. a large wheel span and powerful the pneumatic pump).
The neck support requires a pillow. Without the pillow my head and neck do not rest on the mesh.
Regarding comfort, I sit in the chair for a lot of time each day. Although it feels a bit hard the seat is fairly comfortable. It would be more comfortable if it were bigger.
I purchased these chairs because of the welcoming way the company describes itself, therefore, I hope they will make some changes to improve the chair. I would not buy them if I had the chance again, not without improvements made. I don't need four more chairs, so, I will live with my purchase. If the chairs already had those improvements my opinion would be different. They may be perfect for someone else of a different body type (and age).
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Reviewed in the United States on October 27, 2025
★★★★★ 5
Finally a Chair That Fits and Feels Great
Color: Black, Style: With Headrest
I recently purchased the Marsail Ergonomic Office Chair, and overall, I couldn’t be happier with it.
First off, assembly was incredibly simple. It took me about 30 minutes from start to finish, and the instructions were clear and easy to follow. All the parts were well packaged, and I didn’t run into any issues putting it together.
For reference, I’m 6'2" and about 275 pounds, and this chair fits me very well. As a bigger guy, finding a chair that feels supportive and appropriately sized can be a challenge, but this one hits the mark. The seat is roomy without feeling oversized, and the overall build feels sturdy and solid.
Comfort-wise, it’s been excellent. I work from home and spend about 8–9 hours a day in this chair, five days a week. The thick cushion seat really makes a difference, it stays comfortable throughout the day and doesn’t feel like it’s flattening out after hours of use. I also really like the mesh back. It provides good support while allowing airflow, which helps keep me cool during long work sessions.
The only feature I wish it had is a recline lock at multiple angles. Currently, it only locks in the fully upright position. It would be great to be able to lock it slightly reclined for more flexibility during long workdays.
That said, for the price, ease of assembly, and all-day comfort, this chair delivers tremendous value. I’m giving the Marsail Ergonomic Office Chair 5 stars and would definitely recommend it to anyone looking for a comfortable, supportive office chair, especially if you’re on the taller or bigger side like me.
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Reviewed in the United States on March 2, 2026
★★★★★ 5
This is a terrific office chair at a great price!
Color: Dark Blue, Style: pack of 1
Easy to assemble, with comfortable armrests, lumbar support, and all the functions...it can rock, recline, roll and swivel, plus the seat control easily adjusts up & down, and it comes in a variety of colors. This is my best Amazon purchase ever!!
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Reviewed in the United States on May 22, 2026
★★★★★ 5
A Solid, No-Frills Office Chair That Gets the Job Done
Color: Black, Style: pack of 3
I bought the BestOffice Home Office Chair Ergonomic Desk Chair because I needed something affordable and functional for our conference room. I wasn’t looking for anything high-end—just something comfortable enough to get through staff meetings without complaints of sore backs.
Out of the box, assembly was pretty straightforward. It took me about 20–30 minutes, and the instructions were clear enough that I didn’t run into any major issues. Once set up, the chair feels lightweight but stable, and it rolls smoothly across the low pile carpeted office floor.
The mesh back is probably the best feature. It keeps airflow going, which makes a big difference if you sit for long periods or in a warmer environment. I’ve had padded chairs before that trap heat, so this was a noticeable improvement right away.
The lumbar support is decent for the price. It’s not adjustable in a high-end sense, but it does help encourage better posture and reduces that “slouching into the chair” feeling over time. The armrests are basic, but they do the job for light support.
Comfort-wise, it’s good for moderate use. I can sit in it for a few hours at a time without discomfort, but if you’re planning to sit all day every day, you might want something with more padding and customization.
A few drawbacks worth mentioning:
The cushioning is on the firmer side and I worry may wear with extensive use
The chair is more budget-oriented in build quality
Adjustability is somewhat limited compared to higher-end ergonomic chairs
That said, for the price, it delivers exactly what it promises. It’s a simple, functional office chair that covers the basics without overcomplicating things.
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Reviewed in the United States on March 23, 2026