4.10528.780

Eibach® (11-23) 300/Charger V6/V8 - 1.7" x 1.8" Sport-System Front/Rear Lowering Kit

Regular price\$949.00
/
Shipping calculated at checkout.
MANUFACTURED ITEM! 6-8 WEEK BUILD TIME
• Question? Call us at (888) 257-1077 🏁

Compatible: (3.6L/5.7L)

2011 - 2021 Chrysler 300

2011 - 2021 Dodge Charger

Front Sway Bar is Tubular  2 Way-Adjustable

Rear Sway Bar is Tubular and 2 Way-Adjustable

STEP 1: MOTION RATIO

In developing a basic spring setup, you first step is determining your Motion Ratio. A different formula is needed for the type of suspension your race vehicle utilizes: A-arm or Beam axle. Please take into consideration the Angle Correction Factor in your computation.

A-arm Suspension - (See Diagram 1)

MR
Motion Ratio
d1
Distance from spring centerlines to control arm inner pivot center (in) or (mm)
d2
Distance from outer ball joint to control arm inner pivot center (in) or (mm)

Beam Axle Suspension - (See Diagram 2)

MR
Motion Ratio
d3
Distence between spring centerlines (in) or (mm)
d4
Distance between tire centerlines

Angle Correction Factor

ACF
Angle Correction Factor
d3
Spring angle From Vertical (see diagram 1)
d4
Distance between tire centerlines

DIAGRAM 1 (A-ARM SUSPENSION)

The motion ratio is a lever arm effect of the control arm acting on the spring. If the spring is mounted at an angle, the reduced motion of the spring must also be taken in account.

DIAGRAM 2 (BEAM AXLE SUSPENSION)

The motion ratio of a live axle setup is shown here. Over two-wheel bumps, the motion ratio is 1:1. Over single wheel bumps and during body roll, the motion ratio as shown in step 1. The motion ratio is only used for calculating roll resistance, not for suspension frequencies.

STEP 2: WHEEL RATE

Wheel Rate is the actual rate of a spring acting at the tire contact patch. This value is measured in lbs/inch or N/mm, just as spring rate is. The wheel rate can be determined by using the formula below.

Wheel Rate (non beam)

WR
Wheel Rate (lbs/in) or (N/mm)
C
Spring Rate (lbs/in) or (N/mm)
MR
Motion Ratio
ACF
Angle Correction Factor

STEP 3: SUSPENSION FREQUENCY

Suspension Frequency refers to the number of oscillations or "cycles" of the suspension over a fixed time period when a load is applied to the vehicle

Wheel Rate (non beam)

SF
Suspension Frequency (cpm)*
WR
Wheel Rate (lbs/in) or (N/mm)
Sprung Weight
Vehicle corner weight less unsprung weight

Tip 1: Calculation of Wheel Rate for a given frequency

WR
Wheel Rate (lbs/in) or (N/mm) (see step 2)
SF
SF Suspension Frequency (cpm) (see step 3)
Sprung Weight
Vehicle corner weight less unsprung weight

Tip 2: Calculation of Spring Rate needed for a given Wheel Rate

C
Spring Rate (lbs/in) or (N/mm)
WR
Wheel Rate (lbs/in) or (N/mm) (see step 2)
MR
Motion Ratio
ACF
Angle Correction Factor

Determining Spring Rate

All Eibach motorsport springs are tested between 20% and 70% of the spring’s total travel. This spring rate can be measured easily using the following steps:

Example Spring—Standard: 1200.250.0500 (12”Free Length, 2.5”ID, 500lb/in)

Metric: 0300.060.0100 (300mm Free Length, 60mm ID, 100N/mm)

STEP 1: DETERMINE TRAVEL

For the spring to be rated, please refer to the specifications listed for your spring part number in this catalog and record the travel measurement.This number represents the total available travel from free height to coil bind. Our example spring travel measurements for standard: 6.25" metric: 146mm

STEP 2: DETERMINE TEST RANGE

Calculate the first test point by taking 20% of 6.25" (which equals 1.25") or 20% of 146mm (which equals 29.20mm) and the second test point by taking 70% of 6.25" (which equals 4.375") or 70% of 146mm (which equals 102.20mm). The actual travel between these two points (3.125") or (73mm) is where we determine the spring rate.

STEP 3: SPRING RATE TEST

Preload the spring 1.25" or 29.20mm and record the force measurement. Continue to compress the spring an additional 3.125" (total compression of 4.375") or 73mm (total compression of 102.20mm) and record the force measurement. Calculate and record the difference in force between the two points (1.25">< 4.375") or (29.20mm>< 102.20mm). In our example the difference would be approximately 1565lbs or 7300N.

STEP 4: SPRING RATE CALCULATION

With Eibach4s precise spring rate tolerance of +/- 2% (500 x 2% = 10 lbs) the spring rate should fall between 490 and 510 lbs/in (1565 / 3.125 = 500lb) or 95N and 105N (7300N / 73mm = 100N/mm).

Install Guide:

Warranty:

Based on 23 reviews
83%
(19)
4%
(1)
4%
(1)
4%
(1)
4%
(1)
T
Trequan B. (New York, New York, United States)
Great product

Easy to break in and good stoppage

M
Martin B. (New York, New York, United States)
6 piston caliber

Pretty sure these are the wrong brake pads for my Durango can I swap them for the correct ones

C
Chris B. (Philadelphia, Pennsylvania, United States)
Definitely love it

This definitely a great fit from the look to the performance. Would recommend it for a clean look in the engine bay

T
Tanner K. (El Paso, Texas, United States)

Great product

Good quality for money

Only gripe is they are a little longer than i’d want but they work like a charm. No need for heat shields on your spark plugs wires.

A
AZ (Sacramento, California, United States)
Where is it?

I never got that order. My new address is 18 Tides Edge Place, Sacramento, CA 95835

S
Scott M. (Jersey City, New Jersey, United States)
Exactly as described

Exactly what i needed. I'm so glad these guys could explain the difference in the pad material compared to the 3 other places I called. Will be back soon.

S
Shaun L. (Burlington, North Carolina, United States)

aFe® (11-15) Cherokee V6 Momentum® GT Aluminum Black Cold Air Intake System

N
Nichalas D. (Columbia, Maryland, United States)

Really great CAI

J
Jody O. (Newnan, Georgia, United States)

10 second racing is a reputable company and would definitely do business with them again. They have tons of parts and customer support if needed. Highly recommend them!

Well packaged

Radiator was well packaged came with no dings to the fins. Exactly as describing, fit perfectly. Prompt shipping on the company’s part good communication.

Thermostat

Exactly as ordered, instantly lowered water temps.

A
Alexandru P. (Portland, Oregon, United States)
It works great

The product works good I'm happy with my purchase

M
Matthew G. (Van Nuys, California, United States)
Cold air intake

Very easy install with the cold air intake, and the power is definitely noticeable.

L
Lou W. (Chandler, Arizona, United States)
Awesome product

Solved my belt slipping problem on high rpm track car. Thank you!

M
Maximum_steelrt (Washington, District of Columbia, United States)
2017 Dodge Charger rt

Was the best upgrade I’ve done so far made it feel like a new engine and sounds amazing and definitely pulls a lot harder

J
John (Jersey City, New Jersey, United States)
Great Product!

Easy install and woke up my car!

Worth every penny

Works as described. I like the cruise control operation. Easy to go from fun to work mode.

E
ERIC D. (Atlanta, Georgia, United States)
AWESOME PRODUCT!!

It's great!!

S
Scargod (New Haven, Connecticut, United States)
Noisy and not sticky enough when pushed

I have run quite a few Hoosier R7's but wanted the size available in the 888R's for my new BRZ. For one thing, I had forgotten how noisy they are! I could live with that if they performed better on a dry track.
When pushed hard for 20+ minutes they eventually build up enough heat to start getting greasy and losing grip.
For many they will be adequate for track days, but I drive my cars too close to the limit. A better tire for me in the dry has been the Eagle Supercar F1 3R's.

J
Jason g. (Melbourne, Victoria, Australia)

As above

T
TERRAN S. (Jersey City, New Jersey, United States)
Not a fit

Unfortunately the belt did not fit, it was was too long, my fruend had a 2018 SRT, he had the same problem with his order.
The transaction process was easy, the belt seems like good quality, too bad it didn't fit

M
Mahari H. (El Cerrito, California, United States)

BBK® (16-23) Camaro SS Power-Plus Series® Cold Air Intake System