7
lOWer
Roll Center Position:
-0.75mm
STAnDArD
Roll Center Position:
0mm
HIGHer
Roll Center Position:
+0.75mm
ROLL cENTER – adJUSTING USING LOWER aRM POSITION
Adjusting the position of the lower arms will produce the largest changes in roll center. This is done by using the different offset lower suspension
holders: 0mm (standard), +0.7mm (raised), and -0.7mm (lowered).
A) raise the roll center
– Raising the lower arm inner hinge pin will raise the roll center. Replace both of the arms standard 0mm
suspension holders with +0.7mm suspension holders.
B) lower the roll center
– Lowering the lower arm inner hinge pin will lower the roll center. Replace both of the arms standard 0mm
suspension holders with -0.7mm suspension holders.
frOnT lOWer Arm pOSITIOn
reAr lOWer Arm pOSITIOn
frOnT Upper cAmBer lInk pOSITIOn
reAr Upper cAmBer lInk pOSITIOn
ROLL cENTER - adJUSTING USING UPPER caMBER LINK POSITION
To fine tune the front or rear roll center, adjustments can be made to the angle and length of the camber links. Note that changing the upper link
angle or length will affect the amount of camber rise/gain. The more angled the camber link, or shorter the length, the more camber gain the wheels
will have as the chassis rolls.
The length of the camber links primarily affects camber gain primarily, but it also affects the rate at which the roll center shifts as the chassis rolls.
Changing the camber link angle affects grip throughout the entire corner, while changing the length has more of an effect in the middle of the
corners.
A) raise the roll center
(shorten or increase the angle of the links)
• Increase the height of the camber link OUTER ball joint by placing shims between the ball joint and the hub.
• Decrease the height of the camber link INNER ball joint by using one of the LOWER Quick Roll Center™ positions on the shock tower.
• Shorten the camber link by using one of the OUTER XRAY Quick Roll Center™ positions on the shock tower. Remember to mount the
outer ball joint to the INNER mounting position on the hubs, and adjust the length to achieve the proper camber angle.
NOTE: Camber gain will increase as the chassis rolls.
B) lower the roll center
(lengthen or decrease the angle of the links)
• Decrease the height of the camber link OUTER ball joint by removing shims in between the joint and the hub.
• Increase the height of the camber link INNER ball joint by using one of the upper XRAY Quick Roll Center™ positions on the shock tower
• Lengthen the camber link by using one of the INNER XRAY Quick Roll Center™ positions on the shock tower. Remember to mount the
outer ball joint to the OUTER mounting position on the hubs, and adjust the length to achieve the proper camber angle.
NOTE: Camber gain will decrease as the chassis rolls. We recommend that the camber link always be angled so the outer ball joint is higher
than the inner ball joint.
Higher roll 0.75mm
Standard roll center
lower roll center -0.75mm
