The shock has 3 attachment possibilities on rear arm

a true plug and play high performance blow off valve capable of handling as much boost pressure and flow than anything else available for this vehicle

Knuckles have dual caliper setup

Only the bigger size wheel bearing can be used 45x85x41

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

BOV Kompact EM Dual Port VR15 (Abarth, Alfa, Fiat, Lancia) JR7 The shock has 3 attachmentThe 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