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The SPL Front Lower Control Arm (FLCA) kit is the ultimate tool for setting up the front end of the GR86 / BRZ / GT86 / FR-S for track, drifting, or street use. Adjust track width, camber, caster, roll center, and anti-dive to increase front grip, gain tire clearance, greatly improve tire wear at the track, reduce body roll, and more, in addition to eliminating all of the bushing flex that causes vague and undesirable handling characteristics in corners and under braking.Camber AdjustmentOne of the biggest improvements to cornering grip you can make is increasing the front camber angle from the weak factory spec (0.0 to -0.75°) to a more proper -2.5° to -4.0° of front camber. This also will significantly improve tire life by reducing heavy wear on the outer portion of the tread that occurs due to insufficient camber angle while cornering. Elongating the lower arm will add more camber without the need for adjustable camber plates or eccentric bolts that could potentially slip. However, pairing the SPL LCAs with camber plates allows you more adjustability options for inner and outer tire clearance as well as elongating the track width while retaining a specific camber angle.Caster AdjustmentAnother important alignment spec is caster angle. Caster angle is particularly helpful on a McPherson strut suspension because it increases the amount of camber that is gained as steering angle is increased. It also improves the centering torque on the steering wheel for straight line stability. The OEM spec is a little over 5.0° which compared to other platforms is a bit on the low side. The SPL arms will allow most setups to run 7.0+° of caster, depending on wheel clearance. The result is better grip mid-corner.
