This is the J’s Racing S2000 Roll Center Adjuster (20mm) installed to the stock Honda

* Rear Knuckle

* Hub bearing

* Sirclip

* Hub ASSY

* Back plate

The stock Honda parts used are all brand new and they are precision assembled at J’s Racing factory with the experienced mechanic.   There is no need for the pressing and the product makes it possible to do DIY (do-it-yourself) installation.

J’s Racing S2000 Rear Roll Center Adjuster (20mm)

Ball Joint  S45C

Ball Stud  SCM435HB195-260  Total Swing Angle 39°

The extension  20mm


This is a special part to restore the ideal roll center geometry for S2000.

The lower arm angle of a lower ride height S2000 becomes separated “V” shape and the roll center point moves to a far low position. The deviation of the roll center from the center of the gravity results in a deteriorated cornering force due to the increased body roll.   Furthermore, the reduced suspension stroke leads to a diminished performance at the limit.

The J’s Racing roll center adjuster rectifies the situation by restoring the ideal roll center position (minimizing the deviation of the roll center and the center of the gravity) and produces the ideal suspension geometry.


It is very effective for any Fit whose ride height is reduced, especially with a sport suspension.

★ Reduced roll

★ Increased stability of the tires

★ Sharper steering response

★ Faster cornering


The product was born from the countless data and know-how gained from the actual racing activities.

It can be very effective on the street as well as on the race tracks.


  • It does not fit the 16 inch wheels.
  • This product is for right side only.  The left side is to be purchased separately.
  • A proper alignment adjustment is required after the installation.
  • Please apply the correct tightening torque.


Shipping is about 60-90 days

J'S RACING S2000 Roll center adjuster 20mm knuckle assy


    25911 104th Ave SE Kent, WA 98030

    Contact: 253.872.0872

    Fax: 253.872.0778

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