ACS MainDrive

Reliable Replacements

ACS MainDrive components are high quality, value-priced replacement parts for everyday use.


MainDrive Cassette Hubs

MainDrive Cassette Hubs

Forged alloy bodies, sealed bearings, 3/8" solid chromo axles. Set includes 5 steel cogs (14T-18T, Shimano compatible) and lock rings.

28H (black)

36H (black, blue, red, gold, and purple)


MainDrive External Headshets

MainDrive External Headsets

Forged steel cups, alloy tops, and cap with sealed mechanism bearings.

1" or 1 1/8"

Available colors: Black, red, blue, gold, or purple.


MainDrive Integrated Headshets

MainDrive Integrated Headsets

CNC machined alloy tops with sealed mech 45/45 degree bearings.

Available in 1 1/8”, 1” (for micro, mini and junior size bikes), and 1 1/8” – 1” combo (mount 1” forks on 1 1/8” frames).

Available colors: Black, red, blue, purple, or gold.