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J'S RACING Fit GD rollcenter adjuster

J’s has released the remake of Fit Roll Center Adjuster which achieves the ideal geometry

With maintaining effectiveness of the previous model,  the new one has an improved impact on the geometry change by relocating the fulcrum of the application point.

【Roll Center Adjuster】

The lower arm angle on a lower ride height Fit tends to be far from ideal 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 ideals 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 is designed from the enormous data and knowhow from the actual racing participations. It also works superbly on the street.

After the countless testing, the product thickness is set at 10mm. The roll center adjuster is designed for the vehicle whose ride height is reduced more than 20mm.

※ It is not recommended to the vehicle with the ride height from stock to – 20mm.

Ball Joint  S45C

Ball Stud  SCM435HB195-260  Total Swing Angle 39°

The extension  10mm

Safety precautions

A pressing is required for the installation.

The installation at the professional facility is highly recommended.

A proper alignment adjustment is required after the installation.

Please apply the correct tightening torque.

*Shipping from our office is not included, please contact us for cost and ETA before ordering.