PR RACING TEAM- New for the EVO and V3TR is the
75530086-Narrow S1V3FM Carbon Fiber RR "Top" hanger spacer 1.5mm
75530096-Narrow S1V3FM Carbon Fiber RR "Lower" Hanger Spacer 1.5mm.
These will allow for more weight transfer for lower traction surfaces.
Part number 75530086 is the lower "gearbox and upper hanger spacer". While 75530096 is the spacer that goes under the RR block.