FUNN sealed cartridge headset bearings with 45° × 45° races — pick the outside/inside diameter to match your headset cup (listed in the option name).

Highlights

  • Sealed cartridge, 45° × 45°
  • R412 for ZS49/28.6 and ZS49/30; R425 for ZC44/40 and ZC49/40; R458B for ZS66/40 and ZS66/46
  • Genuine FUNN

Options

  • R412: 41.8 x 30.15 x 6.5mm (ZS49/28.6, ZS49/30)
  • R425: 51.8 x 40 x 8mm (ZC44/40, ZC49/40)
  • R458B: 60 x 46.5 x 8mm (ZS66/40, ZS66/46)

Fit and compatibility

Measure your old bearing's outside diameter, inside diameter and height, or check the headset standard stamped on the cup.

Pick your option from the dropdown; price and stock update to the exact variant.

FUNN products supplied by Tune Cycles are covered against defects in materials and workmanship under the manufacturer's warranty, handled in Australia through the distributor. Normal wear and tear, crash or impact damage, incorrect installation, modification and misuse aren't covered.

For warranty support, return the item to Tune Cycles with your proof of purchase and we'll manage the claim with the distributor for you. This cover is in addition to your rights under the Australian Consumer Law.

  • Sealed cartridge, 45° × 45°
  • R412 for ZS49/28.6 and ZS49/30; R425 for ZC44/40 and ZC49/40; R458B for ZS66/40 and ZS66/46
  • Genuine FUNN
  • Options: R412: 41.8 x 30.15 x 6.5mm (ZS49/28.6, ZS49/30), R425: 51.8 x 40 x 8mm (ZC44/40, ZC49/40), R458B: 60 x 46.5 x 8mm (ZS66/40, ZS66/46)
BrandFUNN
ModelHeadset bearing
TypeHeadset bearing

Options

OptionModel code
R412: 41.8 x 30.15 x 6.5mm (ZS49/28.6, ZS49/30)HD19R412-00
R425: 51.8 x 40 x 8mm (ZC44/40, ZC49/40)HD19R425-00
R458B: 60 x 46.5 x 8mm (ZS66/40, ZS66/46)HD19R458B-00
SKU KWT-FN-HSBEARING
Brand FUNN