Sway Bar Size FAQ

GoldnKnight22

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Hey guys, I was getting tired of people not knowing what size different swaybars were and figured we might as well have this thread somewhere.

SWAY BAR SIZE FAQ
  • All cars mentioned are V6 models.
  • H= hollow (wall thickness unknown)
  • Information obtained from hondanews.com

Front sway bars:

(98-02) Honda Accord Sedan: 27.2 x 4.5mm
(98-02) Honda Accord Coupe: 27.2 x 4.5mm
(2003) Honda Accord Coupe: 27.2 x 4.5mm
(04-07) Honda Accord Coupe: 27.2 x 4.5mm
(03-07) Honda Accord Sedan: 27.2 x 4.5mm
(01-03) Acura CL-S: 27.2 x 4.5mm
(04-07) Acura TL: 27.2 x 5.0mm
(07-08) Acura TL-S: 27.0 solid
Neuspeed: 27.2 solid
Comptech: 27.2 x >4.5mm
Eibach: 27.2 x >4.5mm
H&R: 28 x >4.5mm

Rear sway bars:

(98-02) Honda Accord Sedan: 16mm H
(98-02) Honda Accord Coupe: 17mm H
(2003) Honda Accord Coupe: 13mm H
(04-07) Honda Accord Coupe: 14mm H
(03-07) Honda Accord Sedan: 13mm H
(03-07) Honda Accord Hybrid: 14mm H
(01-03) Acura CL-S: 19mm
(02-03) Acura TL-S: 18mm
(04-06) Acura TL AUTO: 17mm
(07-08) Acura TL AUTO: 18.3mm H
(04-08) Acura TL 6SPD MAN: 20mm
(07-08) Acura TL-S: 20mm
Comptech: 22mm
Neuspeed: 19mm (made for Accords, before CL was born)
Neuspeed Race: 25mm
Eibach: 23mm
Progress: 24mm
H&R: 22mm


Increasing Swaybar Diameter - How Much Will It Help?

It's not as simple as it seems when you look as increasing swaybar thickness. Torsional rigidity increases exponentially with thickness.

[(Larger Diameter^4)/(Smaller Diameter^4)]*100= Percent Increase in Stiffness

Examples:

From 16mm to 18mm (assume both are hollow, with proportional inner diameters)
[(18^4)/(16^4)]*100= 160% increase in torsional rigidity


From 20mm to 24mm (assume both are solid)
[(24^4)/(20^4)]*100= 207% increase in torsional rigidity


From 17mm to 24mm (17mm is not solid, so the increase is actually GREATER than this simplified calculation)
[(24^4)/(17^4)]*100= 397% increase in torsional rigidity :bowdown:
 
Last edited:

Fritz

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Re: Sway Bar Sizes

Great info! I know it will help many out as this is a popular and easy mod with great results for the $.
 

swollen_cu

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Re: Sway Bar Sizes

nice! Now time for me to order my 17mm poly bushings and brackets!
 

hotaccord243

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Re: Sway Bar Sizes

It stated all models below are the v6, are i4 the same?

I'm almost positive the rears are the same for our years (6th Gen) 17mm, but have no idea on the fronts....
 

hotaccord243

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Re: Sway Bar Sizes

when you did your progress sway bar for the TL, do you also need the TL endlinks or can you re-use the accord ones? i've been searching for the past hour... lol
 
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