The Kriega US-Drypack Fit Kit - Aprilia Tuono V4 Factory is a specific fitting hard wear for US-Drypacks. This kit also fits RSV4 RF and RSV4 RR (but excludes the TUONO RR) and all models must have the pillion seat option.Specific fitting kitHigh quality HypalonNylon webbing loopsEasy to fit under seatStrong hook points once fittedOnce fitted, the Kriega US-Drypack Fit Kit - Aprilia Tuono V4 Factory provides a strong hook-on point for any Kriega US-Drypack or US-Drypack Combo.Kit contents:1 x T shaped hook & loop strap2 x bolt-on loops4 x M6 washersFitting: Remove the pillion seat, thread the T strap under the centre section and secure using the hook + loop fixing. Slide two M6 washers inside the two bolt-on loops. Use the existing seat-strap M6 bolts plus the extra two washers to secure in position.Note - advice is to add some protective tape to the 2 rear fins to protect the  paintwork