Standoff Set (30-40mm) Adjustable Engine Mount Stand Off Kit w/4mm Nuts & Bolts (4pcs) 

These stand offs are perfect for mounting small to medium size engines, they allow clearance from the firewall or to move the engine far enough forward for the prop driver assembly to clear the cowl. These stand offs are CNC machined from a solid billet of aluminum for lightness and durability, and supplied with 4 x 4mm mounting bolts with PTFE and metal washers. PTFE (Polytetrafluoroethylene ) is a synthetic fluoropolymer of tetrafluoroethylene that is used in precision parts and has excellent stiffness and dimensional stability.

Specs:
Stand Off Distance: 30-40mm
Mounting Bolt: 4mm
Color: Silver
Suits: small to medium size engines
Quantity: 4 x stand offs, 4 x 4mm nut & bolt, 4 x 4mm washer, 8 x 4mm PTFE washer