Enduro Double Row Bearing 21531 21.5 x 31 x 14 Variant:Enduro Double Row Bearing ABEC3 21531 SW 21.5 x 31 x 14 mm Traction Pads

Traction Pads

while the Vortex fabric on the side panels is dimpled for aerodynamics

The most impressive feature of these bearings is

MC2 high-friction compound for grip and durability

Enduro Double Row Bearing 21531 21.5 x 31 x 14 Variant:Enduro Double Row Bearing ABEC3 21531 SW 21.5 x 31 x 14 mm Traction PadsDR 21531 SW ABEC 3, Double Row, Radial Bearing (C3 clearance) 21. 5mm x 31mm x 14mm Double Row, ABEC 3, Radial Bearing with 52100 High Carbon Chromium alloy races paired with grade 10 balls. The double row design greatly reduces flex in the BB spindle while doubling the bearing contact area. This ABEC 3 bearing features deep groove design races, with Grade 10 balls, LLB seals and 90% fill with high pressure water proof grease to withstand daily abuse