Keep a Hope Pro 4 rear hub rolling with a genuine Hope freehub body. HUB537 is the XX1/XD driver, letting a Pro 4 run SRAM's wide-range XD cassettes. It is a straight swap on the hub, so there is no need to rebuild the wheel.

Highlights

  • Genuine Hope replacement freehub body for Hope Pro 4 rear hubs
  • Fits SRAM XD cassettes (XX1-type, 10-tooth smallest cog)
  • Aluminium construction
  • Supplied as a complete assembly including an S6803 stainless bearing, pawls and springs (set of four) and drive-side seal

Why swap or replace a freehub

A freehub body is the part your cassette slides onto, and it is what lets you coast. Over time the splines can notch under a cassette, or you may simply want to run a different drivetrain. Because Hope designs its hubs to be rebuilt rather than replaced, a new freehub body brings the hub back to spec or converts it to a new cassette standard without rebuilding the wheel. Hope's Pro 4 rear hub uses a four-pawl ratchet with 44-tooth engagement, and the pawls ride on the freehub body, so a fresh body keeps pickup crisp.

Compatibility & fit

Fits Hope Pro 4 rear hubs only; Pro 4 freehub bodies do not fit Pro 2 or Pro 2 Evo hubs. XD drivers suit SRAM XD cassettes, not Shimano HG or MicroSpline. Fitting is a separate Tune Cycles workshop service and is not included in the price – book a workshop appointment.

Covered by the manufacturer's warranty against defects in materials and workmanship. For warranty support, return the item to Tune Cycles with your proof of purchase and we'll manage the claim for you. This is in addition to your rights under the Australian Consumer Law.
  • Replacement freehub body for Hope Pro 4 rear hubs
  • Suits SRAM XD cassettes (XX1-type, 10-tooth smallest cog)
  • Aluminium body
  • Supplied as a complete assembly including an S6803 stainless bearing, pawls and springs (set of four) and drive-side seal
BrandHope
Hub familyPro 4
Cassette standardSRAM XD
MaterialAluminium
Assembly contentsFreehub body, 17x28x7 bearing, S6803 2RS stainless bearing, pawls (set of four), pawl springs (set of four), drive-side seal, 1mm barrel spacer, XD freehub spacer
Hope part numberHUB537
SKU BSP-HOPZHUB537
Brand Hope
Shipping Weight 0.0500kg
Shipping Width 0.160m
Shipping Height 0.060m
Shipping Length 0.220m