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Description
2013-2018 Ram HD 5.5" 4-Link Conversion Kit with NX2 Nitro Shocks (BDS1780H)BDS 5. 5" lift with 4 Link conversion for the 2013 2018 Ram 3500 gas truck with clearance for up to 37" tires. Up front it includes gas specific Pro Ride coil springs, 4 Link control arms with conversion mounts, a forged drop pitman arm and track bar bracket for steering correction, bump stops, brake line brackets, and precision tuned NX2 or FOX 2. 0 nitrogen charged shocks. The 4 link converts the factory stamped steel radius arms over to high
BDS 5.5" lift with 4-Link conversion for the 2013-2018 Ram 3500 gas truck with clearance for up to 37" tires. Up front it includes gas-specific Pro-Ride coil springs, 4-Link control arms with conversion mounts, a forged drop pitman arm and track bar bracket for steering correction, bump stops, brake line brackets, and precision tuned NX2 or FOX 2.0 nitrogen charged shocks. The 4-link converts the factory stamped steel radius arms over to high-strength 1/4" steel brackets that mount HD upper and lower control arms to correct axle positioning while limiting caster change through wheel travel. In the rear it uses a high-strength fabricated lift block, longer u-bolts, and matching NX2 Nitro or FOX 2.0 Performance shocks.
Features
- Heavy duty 4-link improves strength, handling and caster control
- 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
- HD transmission crossmember and t-case indexing ring correct front driveline angles and allow use of factory driveshafts
- Choice of BDS NX2 gas or FOX performance series Internal Floating Piston gas shocks
- Cast iron blocks provide correct pinion angles
Specs
- Front Lift Method: Coil Spring
- Rear Lift Method: Block
- Shocks Included: Yes
- Front Lift Height: 5.5 inch
- Rear Lift Height: 4 inch
- 4 Inch Block: Tail low to level stance
Recommended Tire & Wheel Fitment
- Tire Size: 35x12.5, 37x13.5
- Wheel Diameter: 18x9, 17x9
- Back Spacing: 4.5/5.625
Notes
- 6.4L gas models will require exhaust modification to clear the front driveshaft. 5.7L gas models may require it as well. The vehicle can be driven without the front driveshaft to an exhaust shop before reinstalling the driveshaft.
- The carrier bearing drop is necessary for models equipped with a two-piece rear drive shaft.
- Some vehicles may require a rear driveshaft spacer kit 122007 to maintain adequate rear driveshaft engagement.
- DRW models fit inner wheel clearance to the upper u-bolt plate on 5.5-6 inch kits.
Includes
- BDS012403, 2013-2018 Ram 3500 4-Link Box Kit (2of2) (UPC 658848612345)
- BDS012405, 03-up Dodge 3/4ton 4 Inch Rear (UPC 658848612352)
- BDS012604, 2013-2018 Ram 3500 6 inch 4-Link Box Kit (1of2) (UPC 658848612703)
- BDS032401, 2013-2018 Ram 3500 / 2014-2018 2500 Ram - Front Coils 4 inch Diesel - 5.5 inch Gas (UPC 658848616367)
- BDS122616, Ram T-Case Index - Gas - 6 Bolt (UPC 658848619702)
- BDS85752, Shock- 27.40 x 16.20 x 2-3/8 - S50/EB2 (UPC 711745609624)
- BDS85761, Shock- 33.00 x 19.25 x 2-3/8 - EB1/EB1 (UPC 711745609709)
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
4.4 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
Great product
Size: 9.3" x 9.7" x 1.8"
I recently installed the BOSCH 6029C HEPA Cabin Air Filter, and the difference was noticeable right away. The air inside my car feels much cleaner and fresher, especially when driving in traffic or through areas with a lot of dust and pollution. It does a great job filtering out odors, pollen, and even fine particles—I’ve had fewer allergy issues since switching to this filter.
Installation was straightforward and only took a few minutes, even without much mechanical experience. The build quality is solid, and it fits perfectly without any gaps or issues. Compared to standard cabin filters, this HEPA version is definitely a step up in terms of filtration performance.
Overall, I’d highly recommend this to anyone looking to improve their in-car air quality. It’s a small upgrade that makes a big difference in comfort, especially for daily drivers or people sensitive to allergens.
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Reviewed in the United States on April 3, 2026
★★★★★ 5
Good quality!
Size: 9.3" x 9.7" x 1.8"
This cabin air filter is seriously a game-changer for my car's interior air quality. I was getting tired of that stale, dusty smell every time I turned on the AC. Swapping it out was surprisingly easy, and the difference was noticeable almost immediately. It really does trap all those tiny particles, like pollen and dust, that used to make my allergies flare up. Now, the air inside my vehicle feels so much fresher and cleaner. I've been recommending this brand to all my friends who are looking for a reliable filter. It's definitely worth the investment for a more comfortable driving experience. Seriously, if you're on the fence, just go for it!
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Reviewed in the United States on May 19, 2026
★★★★★ 5
Noticeable upgrade in air quality and a seamless installation
Size: 9.3" x 9.7" x 1.8"
I'm generally skeptical of the "HEPA" marketing for automotive filters, but after installing this in my Honda, the reduction in exterior odors—especially exhaust and pollen—is actually significant. The construction feels far more robust than the flimsy OEM paper filters I’ve used in the past; the pleats are dense and well-reinforced, which gives me more confidence in its filtration efficacy over a 12,000-mile interval.
Installation was straightforward and took less than five minutes. It’s a precision fit with no gaps around the edges, ensuring that all intake air is actually being routed through the media rather than bypassing it. One thing to note is that you might notice a very slight decrease in max fan velocity due to the increased density of the HEPA material, but the tradeoff for cleaner air is well worth it in my opinion. If you live in an area with high pollution or suffer from seasonal allergies, this is a legitimate quality-of-life improvement for your daily commute.
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Reviewed in the United States on February 26, 2026
★★★★★ 5
Exact fit!
Size: 9.3" x 9.7" x 1.8"
Was a great replacement for OE on my 2012 Honda Accord. It was the exact same size as the previous filter and has no strange smells or odors. Very easy to install behind the glove box and looks great!
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Reviewed in the United States on March 23, 2026
★★★★★ 4
Bosch quality
Size: 9.3" x 9.7" x 1.8"
Fit my vehicle without any problems. Quality similar to the OEM filter and at a much better price.
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Reviewed in the United States on February 25, 2026