Seismic Speed Vent 77mm Longboard Wheels and Downhill Longboarding go hand and hand. These beefy wheels are the bigger versions of the 73mm Speed Vents. If you’re going down rough roads these wheels will definitely better than other wheels. Seismic designed these wheels to have the benefits of a solid downhill set of wheels created using a weight saving, energy conversion hub. This specialized hub gives the wheel a lot more agility, making it respond more like a smaller wheel, yet have the performance and stability of a larger wheel.
If you’re serious about downhill longboarding, I would highly suggest adding these wheels to your quiver.