Alienation MX Thunderbird Pivotal BMX Seat t-shirts The new trapezoid chromoly shape

The new trapezoid chromoly shape helps prevent flex while still offering a grindable surface

Sealed cartridge bearings

Features an aluminum top cap and precision bearings

Convenient pad adjustments are possible via an inboard dial or barrel adjuster

Silkworm is incorporated into the casing under the dual compound

Alienation MX Thunderbird Pivotal BMX Seat t-shirts The new trapezoid chromoly shapeThe Alienation MX Thunderbird Pivotal Seat features a subtle southwest poncho design and embroidered thunderbird. Features mid dense foam and double stitching to avoid those unseemly seam rips. Dense mid foam Double Stitched for durability Embroidered Thunderbird Raised AA Bolt Pivotal patch Hollow Bolt White Hangtag