Genuine Shimano replacement freehub body unit (HG spline M) for the FH-TC600 rear hub. This is the HG-spline driver body that accepts Shimano HyperGlide (HG) 8/9/10/11-speed cassettes, as fitted to the FH-TC600-HM-B hub.

Fits

  • Shimano FH-TC600-HM-B rear hub (11/10/9/8-speed, HG spline)
  • Shimano part / item No. 7 in the FH-TC600 exploded view: Y3K398020 (Freewheel body unit, HG spline M)

Note: the Micro Spline (12-speed) version of this hub uses a different freehub body, Y3K298010 — not interchangeable with this HG unit.

Covered by Shimano's spare-parts warranty against manufacturing defects. For any warranty claim or fitment support, return the item to Tune Cycles and we will handle it for you.
  • Genuine Shimano replacement part (item No. 7, Y3K398020)
  • Freehub / freewheel body unit, HG spline M
  • Accepts Shimano HyperGlide (HG) 8/9/10/11-speed cassettes
  • Fits the FH-TC600-HM-B rear hub
Part numberY3K398020 (SKU SHM-Y3K398020)
TypeFreehub / freewheel body unit, HG spline M
Cassette compatibilityShimano HG 8/9/10/11-speed
FitsShimano FH-TC600-HM-B rear hub
IncludedFreehub body unit only
SKU SHM-Y3K398020
Barcode # 4550170308926
Brand Shimano