Take on the gnarliest lines with confidence. The SR309 DH Pro is SUNringlé’s no-compromise downhill wheel, engineered for riders who push the limits. Featuring a robust 30mm internal width, welded seam construction, and tubeless-ready design, it delivers unmatched strength without weighing you down. Laced with the legendary Super Bubba hubs for instant engagement and durability, this wheelset is ready to handle full-send descents and brutal terrain. When milliseconds count and failure isn’t an option, ride the SR309 DH Pro.

SR 309/307 DH Comp:

Rim Technology: STR | Use: Downhill | Outer Rim Width: 35mm | Inner Rim Width: 30mm | Section Height: 20mm Recommended Tire Sizes: 2.3-2.6 | Hubs: SRC Cartridge Bearing J-Bend | Spokes: Wheelsmith SS14 | Nipples: Brass | Disc Mount: 6-Bolt | FH Body: Cro-Mo HG, XD, MS | Engagement: 12deg | Hub Spacing Front: 110 x 20mm Boost | Hub Spacing Rear: 157x12mm, 157×12 | Wheel Sizes: 29in, 27.5 | Hole Count: 32 | Weight/Set: 1250g (29), 1215 (27.5)