Stoptech PowerSlot Slotted Rotors WRX (2015-2018) Universal In effect caster is the

In effect caster is the angle on which the steering knuckle rotates

The stock part is made of silicone and rubber with no reinforcement to it

Please note that without engine management a catless downpipe will trigger a check engine light

Drop (04 STI): F 1

For 2015+ WRX owners

Stoptech PowerSlot Slotted Rotors WRX (2015-2018) Universal In effect caster is theStopTech PowerSlot rotors are a direct replacement upgrade for the 2015+ Subaru WRX designed to fit your factory brake system and stock calipers. The unique slotted or cross drilled surface helps wipe away debris that can form between the pad and the disc, provides more initial pad bite, improves cooling, and will add a sporty track inspired aesthetic to any ride. All Power Slot and SportStop rotors feature a friction surface coating to prevent