Knuckles have dual caliper setup

Minimum 315 mm

but for maximum grip

Camber shims are used for adjustment

\nALV40 2-1 Weld Flange TS-0550-3100

BOV Kompact EM Dual Port VR15 (Abarth, Alfa, Fiat, Lancia) JR7 Knuckles have dual caliper setupThe award winning Kompact EM series Blow Off Valves, are the worlds first truly plug and play Blow Off Valves. Simply unplug and unbolt your OEM Blow Off Valve, and install ours in its place. No adaptors, hoses or extra assembly required. All this while retaining complete OE control of the BOVs operation. Dual Port vents both to the atmosphere and back into the air intake. Suitable for certain Abarth, Alfa Romeo, Fiat & Lancia vehicles. Please look up