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Eibach - 2017-2021 Honda Civic SI

Product Releases - 2017-2021 Honda Civic SI

PRO-KIT Lowering Springs

In stock for the 2017-2021 Honda Civic SI, Eibach PRO-KIT springs deliver upgraded performance and ride comfort using our progressive spring technology. By lowering the Center of Gravity (CoG) the PRO-KIT increases steering response and improves vehicle dynamics for a sportier, more balanced feel. Additionally, the reduced height eliminates excessive ground clearance and fender gap giving the Civic SI a look it deserves.

  • Performance handling and improved dynamics
  • Lower center of gravity
  • Stop quicker and corner faster
  • Reduced fender gap for enhanced aesthetics
  • Million-Mile Warranty

Ride Height:
Sedan: Front: -0.9" Rear: -1.1"
Coupe: Front: -0.9" Rear: -0.9"


Before & After

Before
After

SPORTLINE Performance Springs

The Eibach SPORTLINE Kit features an even lower drop using our precision engineered progressive spring rates. By lowering your car's center of gravity (CoG), our SPORTLINE springs further reduce squat during acceleration, body roll in corners and nose-dive under braking for a perfect balance between high performance, increased lowering and comfortable ride quality.

  • Motorsport inspired handling and appearance
  • Precision wound hi-tensile steel alloy, cold-formed, tempered and shot-peened for long lasting performance and durability
  • Progressive design for balance of sport performance and excellent ride quality
  • Engineered and tested to work perfectly with stock dampers
  • Million-Mile Warranty

Ride Height:
Sedan: Front: -1.7" Rear: -1.8"
Coupe: Front: -1.5" Rear: -1.7"


Before & After

Before
After

Coupe Products

Product Part # Front Rear Price Cart
ANTI-ROLL-KIT (Front and Rear Sway Bars) E40-40-036-01-11
2017 to 2021
HONDA
Civic
Si Coupe
Front Sway Bar is Tubular and Non-Adjustable/ Rear Sway Bar is Solid and 2 Way-Adjustable.
29mm
22mm
Note: Front Sway Bar is Tubular and Non-Adjustable/ Rear Sway Bar is Solid and 2 Way-Adjustable.
$452.00
FRONT ANTI-ROLL Kit (Front Sway Bar Only) E40-40-036-01-10
2017 to 2021
HONDA
Civic
Si Coupe
Front Sway Bar is Tubular and Non-Adjustable.
29mm
Note: Front Sway Bar is Tubular and Non-Adjustable.
$225.00
PRO-KIT Performance Springs (Set of 4 Springs) E10-40-036-02-22
2017 to 2021
HONDA
Civic
Si Coupe
Tested with factory dampers.
0.9 in
0.9 in
Note: Tested with factory dampers.
$305.00
PRO-SPACER Kit (10mm Pair) S90-6-10-012
2017 to 2021
HONDA
Civic
Si Coupe
Original studs must be changed. Longer studs are included.
Note: Original studs must be changed. Longer studs are included.
$109.00
PRO-SPACER Kit (15mm Pair) S90-6-15-038
2017 to 2021
HONDA
Civic
Si Coupe
Original studs must be changed. Longer studs are included.
Note: Original studs must be changed. Longer studs are included.
$114.00
PRO-SPACER Kit (20mm Pair) S90-6-20-015
2017 to 2021
HONDA
Civic
Si Coupe
Original studs must be changed. Longer studs are included.
Note: Original studs must be changed. Longer studs are included.
$121.00
PRO-SPACER Kit (30mm Pair) S90-4-30-027
2017 to 2021
HONDA
Civic
Si Coupe
Spacers can only be used with wheels that have cut-outs (facing the hub) to clear the stock studs. Please check as follows: Original stud length (i.e. 35mm) minus spacer-thickness (i.e. 25mm) = 10mm excess stud length. The cut-out should have a depth of 11mm.
Note: Spacers can only be used with wheels that have cut-outs (facing the hub) to clear the stock studs. Please check as follows: Original stud length (i.e. 35mm) minus spacer-thickness (i.e. 25mm) = 10mm excess stud length. The cut-out should have a depth of 11mm.
$147.00
REAR ANTI-ROLL Kit (Rear Sway Bar Only) E40-40-036-01-01
2017 to 2021
HONDA
Civic
Si Coupe
Rear Sway Bar is Tubular and 2 Way-Adjustable.
22mm
Note: Rear Sway Bar is Tubular and 2 Way-Adjustable.
$250.00
SPORTLINE Kit (Set of 4 Springs) E20-40-036-02-22
2017 to 2021
HONDA
Civic
Si Coupe
Rear Camber Kit part# 5.67476K is required for proper alignment. Tested with factory dampers.
1.5 in
1.7 in
Note: Rear Camber Kit part# 5.67476K is required for proper alignment. Tested with factory dampers.
$325.00
ANTI-ROLL KIT - Rear Adjustable End Link System AK41-40-036-04-RA
2017 to 2021
HONDA
Civic
Si Coupe
Replaces Factory End Links.
Note: Replaces Factory End Links.
$154.00
ANTI-ROLL KIT - Rear Anti-Roll Bar Brace AK41-40-036-05-RA
2017 to 2021
HONDA
Civic
Si Coupe
Rear Brace includes Rear End Link Kit.
Note: Rear Brace includes Rear End Link Kit.
$248.00
ANTI-ROLL KIT - Front Adjustable End Link System AK41-40-036-04-FA
2017 to 2021
HONDA
Civic
Si Coupe
Replaces Factory End Links.
Note: Replaces Factory End Links.
$154.00
PRO-ALIGNMENT Performance Lower Control Arms AK41-40-036-06-02
2017 to 2021
HONDA
Civic
Si Coupe
Note:
$245.00
PRO-ALIGNMENT 5.67476 Replacement Rod-End 5.6747019
2017 to 2021
HONDA
Civic
Si Coupe
Note:
$189.00
PRO-ALIGNMENT Camber Arm Kit 5.67476K
2017 to 2021
HONDA
Civic
Si Coupe
Camber Arm. Rear - Camber +3.0 to -3.0 degrees of Adjustments.
Note: Camber Arm. Rear - Camber +3.0 to -3.0 degrees of Adjustments.
$396.00

Sedan Products

Product Part # Front Rear Price Cart
ANTI-ROLL-KIT (Front and Rear Sway Bars) E40-40-036-01-11
2017 to 2021
HONDA
Civic
Si Sedan
Front Sway Bar is Tubular and Non-Adjustable/ Rear Sway Bar is Solid and 2 Way-Adjustable.
29mm
22mm
Note: Front Sway Bar is Tubular and Non-Adjustable/ Rear Sway Bar is Solid and 2 Way-Adjustable.
$452.00
FRONT ANTI-ROLL Kit (Front Sway Bar Only) E40-40-036-01-10
2017 to 2021
HONDA
Civic
Si Sedan
Front Sway Bar is Tubular and Non-Adjustable.
29mm
Note: Front Sway Bar is Tubular and Non-Adjustable.
$225.00
PRO-KIT Performance Springs (Set of 4 Springs) E10-40-036-02-22
2017 to 2021
HONDA
Civic
Si Sedan
Tested with factory dampers.
0.9 in
1.1 in
Note: Tested with factory dampers.
$305.00
PRO-SPACER Kit (10mm Pair) S90-6-10-012
2017 to 2021
HONDA
Civic
Si Sedan
Original studs must be changed. Longer studs are included.
Note: Original studs must be changed. Longer studs are included.
$109.00
PRO-SPACER Kit (15mm Pair) S90-6-15-038
2017 to 2021
HONDA
Civic
Si Sedan
Original studs must be changed. Longer studs are included.
Note: Original studs must be changed. Longer studs are included.
$114.00
PRO-SPACER Kit (20mm Pair) S90-6-20-015
2017 to 2021
HONDA
Civic
Si Sedan
Original studs must be changed. Longer studs are included.
Note: Original studs must be changed. Longer studs are included.
$121.00
PRO-SPACER Kit (30mm Pair) S90-4-30-027
2017 to 2021
HONDA
Civic
Si Sedan
Spacers can only be used with wheels that have cut-outs (facing the hub) to clear the stock studs. Please check as follows: Original stud length (i.e. 35mm) minus spacer-thickness (i.e. 25mm) = 10mm excess stud length. The cut-out should have a depth of 11mm.
Note: Spacers can only be used with wheels that have cut-outs (facing the hub) to clear the stock studs. Please check as follows: Original stud length (i.e. 35mm) minus spacer-thickness (i.e. 25mm) = 10mm excess stud length. The cut-out should have a depth of 11mm.
$147.00
REAR ANTI-ROLL Kit (Rear Sway Bar Only) E40-40-036-01-01
2017 to 2021
HONDA
Civic
Si Sedan
Rear Sway Bar is Tubular and 2 Way-Adjustable.
22mm
Note: Rear Sway Bar is Tubular and 2 Way-Adjustable.
$250.00
SPORTLINE Kit (Set of 4 Springs) E20-40-036-02-22
2017 to 2021
HONDA
Civic
Si Sedan
Rear Camber Kit part# 5.67476K is required for proper alignment. Tested with factory dampers.
1.7 in
1.8 in
Note: Rear Camber Kit part# 5.67476K is required for proper alignment. Tested with factory dampers.
$325.00
ANTI-ROLL KIT - Rear Adjustable End Link System AK41-40-036-04-RA
2017 to 2021
HONDA
Civic
Si Sedan
Replaces Factory End Links.
Note: Replaces Factory End Links.
$154.00
ANTI-ROLL KIT - Rear Anti-Roll Bar Brace AK41-40-036-05-RA
2017 to 2021
HONDA
Civic
Si Sedan
Rear Brace includes Rear End Link Kit.
Note: Rear Brace includes Rear End Link Kit.
$248.00
ANTI-ROLL KIT - Front Adjustable End Link System AK41-40-036-04-FA
2017 to 2021
HONDA
Civic
Si Sedan
Replaces Factory End Links.
Note: Replaces Factory End Links.
$154.00
PRO-ALIGNMENT Performance Lower Control Arms AK41-40-036-06-02
2017 to 2021
HONDA
Civic
Si Sedan
Note:
$245.00
PRO-ALIGNMENT 5.67476 Replacement Rod-End 5.6747019
2017 to 2021
HONDA
Civic
Si Sedan
Note:
$189.00
PRO-ALIGNMENT Camber Arm Kit 5.67476K
2017 to 2021
HONDA
Civic
Si Sedan
Camber Arm. Rear - Camber +3.0 to -3.0 degrees of Adjustments.
Note: Camber Arm. Rear - Camber +3.0 to -3.0 degrees of Adjustments.
$396.00

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