MR031 Headset Bearing (37x48.9x6.5) 36/45 (Grizzly Standard) (WS513538) 20232024 Grizzly Standard Kit 10 Standard

Grizzly Standard Kit  10 Standard Bearings over 2 different sizes

AMS Zero99 (2022- Current) (updated Aug 2025)

Grizzly Standard Kit Full Kit Unavailable due to sizes

Grizzly Standard Kit Full Kit - 11 Standard Bearings over 3 different sizes

MR031 Headset Bearing (37x48.9x6.5) 36/45 (Grizzly Standard) (WS513538) 20232024 Grizzly Standard Kit 10 StandardMR031 Headset Bearing (37x48. 9x6. 5) 36 45 (Grizzly Standard)(WS513538) MR031 id: 37 od: 48. 9 width: 6. 5 mm (36 45) Abec 3+ depending on stock availability Seals: 2RS (Rubber Seals) Grease 90% fill of Mobil XHP 22 High Quality Grease Material: Chromium high carbon alloy steel NB: You may receive a branded or unbranded bearing depending on stock availability at the time of purchase. The bearing will continue to be of the same great quality and in