BGM PRO Competition Front & Rear Shock Absorbers Vespa PX, T5BGM PRO Competition Front & Rear Shock Absorbers Vespa PX, T5 BGM Pro has two high quality shock absorber series in its product range, the Sport and Competition Line. We believe at Ron Daley's that both the workmanship is perfect and the quality of the item is made to the highest standard. The shock absorbers are very light in spite of their high load capacity, as they are made of high strength aluminium CNC and unlike a lot of other Shock Absorbers,