This takes the guess work out of restrictor

Green Spring Rated -15 InHg (installed)

If the focus is more towards on performance

upgraded camber arm and reinforced knuckle

Due to extremely wide engine bay on Subaru BRZ

Clutch Kit - Xtreme Outback Race Sprung Ceramic 630Nm KGM24001-1R Men's This takes the guess workXtreme Outback Heavy duty sprung ceramic kit 1R Recommended for: Motorsport Applications 1R kits are sprung ceramic single plate upgrades like seen in the "" 1B"" kits, however these kits offer even further clamping force for vehicles that have had significant performance modifications. Used regularly in motorsport applications, these kits are ideal for competition cars still used on the road (such as rally cars). Specifications: Torque capacity