Looks like they are using an Affix clamping system for the CROSSBAR since they are 2 piece bars and this will allow you to rotate the Crossbar in the clamp to give you backsweep.
"Black MGP VX2 Pro Scooter Features:
• 4 inch wide VX2 MGP fluted deck – a design that creates a lighter weight, yet stronger deck.
• Scalloped 82.5 degree downtube – a downtube design unique to MGP scooters and is ideal for foot jams.
• FSA B53 alloy threaded headset – the leader in headsets
• 18.5 inch wide adjustable 2 piece Madd Chromoly bars
•
Affix Integrated Bar Clamp System for a strong, slick way to allow for cross bar adjustments
• Pro-Spec reinforced fork
• Madd VX2 Alloy slide in brake system
• Madd Triple Clamp
• K-1 wheel bearing set
• MGP Squid grips – super comfy rubber bar grips
• MGP two tone SHOCKTAPE™ - a special cushioned deck grip tape that’s super grippy
• 100MM MGP 85A 12 Spoke Pro Core Wheels"