Standard Bearing

Bearing 1621RS, 1-3/8"OD x 1/2"ID

Ball Bearing with an 1.375" Outside Diameter and a .5" Inside Diameter.  A 12mm axle from the Lil Rascal/Rascal/Mega Moto 80 Minibikes will slide through this bearing.

Bearing 3/4", 1 3/8"OD

Bearing 3/4" ID 1 3/8 OD with machined lip

Sealed 1 3/8" OD

1 3/8" Outside Diameter,5/8" ID has machined lip instead of snap ring, very durable

3/4" ID Precision Ball Bearings- 1 5/8" OD

3/4" Inside Diameter, 1 5/8" OD. used on 3/4" Carter live axle karts and Yellow jacket karts.

Axle Bearing, 1" Round or 7/8" Hex

Each axle uses two bearings.  1" round bearing may come with set screws or a concentric lock ring.    3941 used on round 1" live axle,   3941H used on Manco 7/8" hex axle Outer diameter on both 2"

5/8" ID Sealed Bearing, 1 3/8" OD, Common

Standard bearing used on most gokarts for wheels and jackshafts.   5090 Bearing Dimensions: 5/8" Inside Diameter 1-3/8" Outside Diameter Does have outer snap ring

3/4" ID Bearing, 1 3/4" OD, common

Sealed only on the outside of bearing   3/4" Inside Diameter 1-3/4" Outside Diameter Standard bearing used on Manco go-karts