The modular pulley design allows you to mix and match pulley sizes and hub adapters. In seconds you can go from 32t to 36t (or 40, 44t). You can also then use the pulleys on different hub adapters. All parts are made from aircraft grade 7075 aluminum and anodized black. All pulleys are 15mm and HTD5.

The Flyhweel Hub Works with:

83, 90, and 97mm Genuine Flywheels
107mm Superfly Flywheels
83, 90, and 97mm Clone Flywheels
100mm MBS Wheels

The Kegel Hub Works with:

80mm Orangatang Kegel (Orange and Purple)
85mm Orangatang Caguma
90mm and 100mm Boa Wheels (All Colors)

The modular hubs uses an 11mm bearing that is shared between the wheel and hub adapter. This allows modular pulleys to be used, (any size: 32, 36, 40, 44t). They can be found here individually or if you want a hub adapter + pulley you can find that here

What trucks will these work with?

Standard Caliber 2 Trucks: it is necessary to flip the outer lock-nut and use only one inner speed ring between the pulley bearing and truck axle
Paris Trucks: same procedure as Caliber
TorqueBoards 218mm Trucks: fits perfect without and different procedures
Any other truck with 8mm axle and less than 28mm hanger width

Installation: Please see this detailed installation guide with pictures

These pulleys are designed to be press fit into the wheels. This ensures there is no slop. First, install the 11mm bearing ensuring it is flush with the bearing seat. Second, press the hub adapter into the wheel ensuring it is square. You may need to use the help of an arbor press, vice, clamps, or other tools in order to properly secure the pulley. After it is pressed flush with the wheel install the pulley with the 5 provided screws (when purchasing a pulley or combo). Make sure to use red loctite to ensure they never wiggle loose.

Includes:

1x Modular Hub Adapter (Flywheel or Kegel)
1x Modular Pulley (32, 36, 40, or 44t)
1x 11mm Bearing

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PO Box 22
Numidia, PA 17858