Lowering Springs Guide
Best Lowering Springs for the
2005 – 2010 Chrysler 300: Every Kit Compared
A complete comparison of every lowering spring kit available for the 2005–2010 Chrysler 300 — covering the 2.7L and 3.5L V6, 3.6L Pentastar (2008+), 5.7L 300C Hemi, and 6.1L SRT8 models. Drop heights, pricing, fitment notes, and real-world owner feedback.
At a Glance
Quick Comparison
| Brand / Kit | Front Drop | Rear Drop | Fits | Type | Price | |
|---|---|---|---|---|---|---|
| D2 Racing Pro Series | -1.8" | -1.9" | All 300 RWD | Progressive |
|
SHOP → |
| H&R Sport (300C 5.7L) | -2.0" | -1.8" | 300C 5.7L | Progressive |
|
SHOP → |
| H&R Sport (V6) | -1.8" | -1.8" | 300 V6 RWD | Progressive |
|
SHOP → |
| H&R Sport (SRT8 6.1L) | -1.8" | -1.7" | 300C SRT8 | Progressive |
|
SHOP → |
| Eibach Pro-Kit | -1.6" | -1.6" | 300C (exc. SRT8) | Progressive |
|
SHOP → |
| Eibach Sportline | -2.0" | -2.0" | 300 V6 & 300C (exc. SRT8) | Progressive |
|
SHOP → |
| ST Suspensions Sport Springs | -1.4" | -1.4" | 300 5.7L V8 | Progressive | $469 | SHOP → |
Important
What to Know Before You Buy
Trim-Specific Drops Matter
The same spring kit will drop a V6 300 differently than a 300C 5.7L or SRT8. Heavier engines compress springs more. The Eibach Pro-Kit, for example, drops a 300C -1.6" front and rear, while the Sportline delivers -2.0" on both V6 and 300C models. We break down every trim's expected drop in each product section below.
Nivomat / Self-Leveling Suspension
Many 2005–2010 Chrysler 300s (especially 300C and SRT8) were equipped with Nivomat self-leveling rear shocks. These systems use a hydraulic load-leveling unit instead of conventional rear shocks. Most lowering springs in this guide require standard rear shocks — not Nivomat. If your 300 has self-leveling, you must replace the rear Nivomat units with conventional shocks before installing lowering springs. H&R offers a dedicated Nivomat-compatible spring (50866) for Charger; check fitment for 300.
Alignment & Camber Correction
Drops under 1.25" usually stay within factory alignment specs. Anything above 1.25" will likely need aftermarket adjustable upper control arms or camber bolts ($300–$600 extra). Always budget for a professional alignment after installation.
Factory Shocks Are Likely Worn
These vehicles are 15–20 years old. If your shocks have 60,000+ miles (or unknown history), they are likely worn. Installing new springs on tired dampers results in a bouncy, poorly controlled ride. Consider upgrading to Bilstein B6 or ST Suspensions Sport Shocks ($100–$200 each) when you install lowering springs.
D2 Racing Pro Series Lowering Springs
At $200, the D2 Racing Pro Series is the cheapest lowering spring option for the 2005–2010 Chrysler 300 — and one of the most aggressive, with a 1.8" front and 1.9" rear drop. It fits all RWD 300 models (V6, 300C, and SRT8), making it a universal choice if you want maximum stance on a tight budget. The progressive-rate design aims to balance daily comfort with improved handling.
D2 springs are crafted from 55 chrome silicon steel in ISO 9001 and TÜV-approved facilities. Forum reports from long-term LX platform owners note that D2 springs can sag over time (5–7 years), gradually settling lower than the advertised drop. The lifetime warranty covers defects, but sag is a known trade-off at this price point. At -1.8" or more, camber correction will likely be needed.
Pros
- Lowest price at $200
- Fits all 300 RWD trims (V6, 300C, SRT8)
- Aggressive drop (-1.8" F / -1.9" R)
- Progressive rate for street comfort
Cons
- Reports of sagging after 5–7 years
- Camber correction likely required
- May scrape on driveways and speed bumps
- Budget-tier brand with less community validation than Eibach or H&R
H&R Sport Lowering Springs (300C 5.7L)
H&R Sport Springs for the 300C 5.7L deliver a 2.0" front and 1.8" rear drop — one of the most aggressive options for the Hemi sedan. Made in Germany from Belgium Bekaert spring steel, H&R springs are cold-wound, heat-tempered, shot-peened, and phosphate-treated for durability. The progressive rate balances daily comfort with sharper handling and reduced body roll.
This kit (50847) is designed specifically for the 2005–2010 Chrysler 300C with the 5.7L Hemi and 2WD. It excludes AWD and self-leveling (Nivomat) models. At -2.0" front, camber correction will likely be needed. Pair with quality sport shocks for best results, especially on higher-mileage vehicles.
Pros
- Trim-specific for 300C 5.7L (optimal spring rates)
- Aggressive drop (-2.0" F / -1.8" R)
- Made in Germany, proven quality
- Lifetime limited warranty
- Strong community presence on LX Forums
Cons
- Excludes AWD and Nivomat/self-leveling
- Camber correction likely required
- Ride is firmer than stock
H&R Sport Lowering Springs (V6)
H&R Sport Springs (50830) are engineered for the 2005–2010 Chrysler 300 with V6 engines and rear-wheel drive. They deliver a 1.8" drop front and rear, closing the wheel gap and improving cornering stability without sacrificing everyday comfort. The progressive rate provides a smooth ride over small bumps while stiffening under load for better control.
This kit fits all V6 300 models (2.7L, 3.5L, and 3.6L Pentastar from 2008). It excludes AWD. Camber adjustment components may be needed after installation. Pair with quality shocks if your factory dampers are worn.
Pros
- V6-specific spring rates
- Balanced -1.8" F/R drop
- Made in Germany, lifetime warranty
- Good value when on sale
Cons
- Excludes AWD
- Camber correction may be needed
- Firmer than stock
H&R Sport Lowering Springs (SRT8 6.1L)
H&R Sport Springs (50830-8) are the only lowering springs in this guide specifically engineered for the 2005–2010 Chrysler 300C SRT8 with the 6.1L Hemi. They deliver a 1.8" front and 1.7" rear drop, tuned for the heavier SRT8's weight and suspension geometry. The progressive rate balances aggressive stance with daily drivability.
SRT8 models have unique spring rates due to the 6.1L engine and performance suspension. Using a generic or V6/300C kit can result in an uneven drop or poor ride quality. This H&R kit is the correct choice for SRT8 owners seeking a proven, trim-specific solution.
Pros
- Only dedicated SRT8 6.1L lowering spring in this guide
- Trim-specific spring rates
- Made in Germany, lifetime warranty
- Strong LX platform community validation
Cons
- SRT8-only fitment (no V6 or 300C 5.7L)
- Camber correction likely required
- Firmer ride than stock
Eibach Pro-Kit Lowering Springs
The Eibach Pro-Kit (2873.140) is the most recommended lowering spring for the 2005–2010 Chrysler 300C across LX Forums and enthusiast communities. It delivers a 1.6" front and rear drop on 300C models, reducing body roll and improving cornering stability while maintaining near-stock ride quality. The progressive spring rate keeps daily driving comfortable while sharpening handling in corners.
This kit fits the 2005–2010 Chrysler 300C and Dodge Magnum (excluding SRT8 and AWD). Eibach does not offer a dedicated SRT8 kit for this generation — SRT8 owners should use the H&R 50830-8. The Pro-Kit is tested with factory dampers and backed by Eibach's million-mile limited warranty.
Drop by Trim
| Application | Front Drop | Rear Drop |
|---|---|---|
| 2005–2010 Chrysler 300C (exc. SRT8) | -1.6" | -1.6" |
| 2005–2008 Dodge Magnum R/T | -1.3" | -1.4" |
| 2005–2008 Dodge Magnum V6 3.5L | -1.3" | -1.3" |
Pros
- Best balance of drop and ride quality
- Near-stock comfort (progressive rate)
- Million-mile limited warranty
- Made in Germany
- Strongest community validation
- Camber correction often not needed at -1.6"
Cons
- Does not fit SRT8 (use H&R 50830-8)
- Conservative drop vs. Sportline or H&R
- Spring rates not publicly published
Eibach Sportline Lowering Springs
The Eibach Sportline (4.7328) delivers the most aggressive drop of any Eibach kit for the 2005–2010 Chrysler 300: a full 2.0" front and rear on both V6 and 300C models. Designed for drivers who want maximum stance and track-inspired handling, the Sportline springs minimize body roll, squat, and dive while maintaining surprisingly good ride quality for the drop height.
This kit fits 2005–2010 Chrysler 300 V6 (3.5L) and 300C (excluding SRT8 and AWD), plus 2005–2008 Dodge Magnum R/T and V6. At -2.0", camber correction will likely be needed. The Sportline uses a track-focused spring rate — firmer than the Pro-Kit but still progressive for street use.
Drop by Trim
| Application | Front Drop | Rear Drop |
|---|---|---|
| 2005–2010 Chrysler 300C (exc. SRT8) | -2.0" | -2.0" |
| 2005–2010 Chrysler 300 V6 3.5L | -2.0" | -2.0" |
| 2005–2008 Dodge Magnum R/T & V6 | -2.0" | -2.0" |
Pros
- Maximum Eibach drop (-2.0" F/R)
- Fits both V6 and 300C
- Track-focused spring rate
- Limited lifetime warranty
- Made in Germany
Cons
- Does not fit SRT8
- Camber correction likely required
- Firmer ride than Pro-Kit
- May scrape on steep driveways
ST Suspensions Sport Springs
ST Suspensions is a sub-brand of KW Automotive, the premier German suspension manufacturer. The Sport Springs (65504) deliver a 1.4" front and rear drop on the 2005–2010 Chrysler 300 5.7L V8, as well as Charger, Magnum, and Challenger 5.7L models. Designed to work with factory dampers, they offer a moderate drop with KW's engineering and quality standards.
This kit fits 5.7L V8 models only — not V6 or SRT8 6.1L. The conservative 1.4" drop keeps the suspension within a safe operating envelope for factory shocks and typically avoids the need for camber correction. For owners who want a modest drop with premium build quality, ST is the top-tier choice.
Pros
- KW German engineering
- Moderate drop — camber correction usually not needed
- Designed for factory dampers
- High-tensile steel, quality construction
- Works across LX platform (300, Charger, Magnum, Challenger 5.7L)
Cons
- 5.7L V8 only (no V6 or SRT8)
- Most expensive fixed spring in this guide
- Conservative drop vs. H&R or Eibach Sportline
Fitment Reference
Which Kits Fit Your Trim?
| Trim | D2 | H&R 300C | H&R V6 | H&R SRT8 | Eibach Pro | Eibach Sport | ST |
|---|---|---|---|---|---|---|---|
| 300 V6 (2.7L / 3.5L / 3.6L) | ✓ | ✗ | ✓ | ✗ | ✗ | ✓ | ✗ |
| 300C 5.7L | ✓ | ✓ | ✗ | ✗ | ✓ | ✓ | ✓ |
| 300C SRT8 6.1L | ✓ | ✗ | ✗ | ✓ | ✗ | ✗ | ✗ |
✓ = Confirmed fitment • ✗ = Not designed for this trim • All kits exclude AWD
Common Questions
Frequently Asked Questions
Do I need new shocks when installing lowering springs?
Not necessarily. All kits on this page are designed to work with factory shocks. However, 2005–2010 Chrysler 300s are 15–20 years old. If your shocks have 60,000+ miles or unknown history, they are likely worn. Installing fresh springs on tired dampers creates a bouncy, poorly controlled ride. Upgrading to Bilstein B6 or ST Suspensions Sport Shocks is recommended if your dampers are worn.
Will lowering springs void my factory warranty?
Under the Magnuson-Moss Warranty Act, a dealer cannot void your entire warranty just because you installed aftermarket parts. However, if a warranty claim is directly related to the modification (e.g., premature strut wear caused by lowering), the dealer can deny that specific claim. For 2005–2010 vehicles, factory warranty has typically expired.
Do lowering springs affect ride quality?
Yes, but the degree varies by product. Conservative drops (1.4–1.6") with progressive-rate springs (like Eibach Pro-Kit or ST) maintain near-stock ride comfort. Aggressive drops (1.8–2.0") will be noticeably firmer, especially over bumps. Pairing lowering springs with worn factory shocks will make any kit feel harsh.
What's the difference between progressive and linear spring rates?
Progressive springs have a variable rate — soft initially for comfort over small bumps, then stiffening as the spring compresses. This gives a comfortable daily ride with good control under hard cornering. All springs in this guide are progressive. Linear springs have a constant rate throughout travel — firmer overall but more predictable for track use.
Should I get lowering springs or coilovers?
Lowering springs are best if you want a set drop at the lowest cost ($200–$470 for springs vs. $1,200+ for quality coilovers). If you want adjustable ride height AND adjustable damping, coilovers are the better choice. The labor cost is roughly the same for both. Check our Suspension Buyers Guide for a full coilover comparison.
I have a 300C with Nivomat self-leveling. Can I use lowering springs?
Most lowering springs in this guide require conventional rear shocks, not Nivomat. If your 300 has self-leveling rear suspension, you must replace the Nivomat units with conventional shocks before installing lowering springs. H&R offers a Nivomat-compatible spring (50866) for the Dodge Charger; verify fitment for the Chrysler 300 before purchasing.
Ready to Lower Your Chrysler 300?
Browse all of our lowering springs for the Chrysler 300, or contact us if you need help choosing the right kit for your specific trim and goals.
