SRAM XD/XDR Freehub Installation

This page walks through installation of the SRAM XD/XDR Freehub on KICKR or KICKR CORE available now in the Wahoo online store.

Required Tools:

• Sprocket remover (AKA chain whip) or chain vice (pictured in instructions below)

• 17mm* cone wrench or crescent wrench (adjustable wrench also acceptable)

• Cassette lockring tool (Park Tool FR-5.2 or similar) and matching 1" (25.4 mm) socket wrench (or adjustable wrench)
  
  *KICKR v6 and updated thru axle adapter kits come with lock nuts with 14mm wrench flats, rather than 17mm.

Included Components:

*** NOTE: KICKR v6 and updated thru axle adapter kits come with modified conical lock nuts.  If using a v6 or this updated adapter kit, please use the shorter conical XDR lock nut provided with the V6 or updated adapter kit, rather than the cylindrical lock nut pictured above.  If you have a question about if your bike requires an updated adapter kit, see our article on KICKR Bicycle Compatibility.

Installation Steps:

1. Start by using the chain whip (or chain vice as pictured) and lockring tool to loosen the lockring and remove the existing cassette
   (skip this step if a cassette is not present, like in KICKR CORE initial setup).
   
   
   
   
   
2. Use the 17mm* cone wrench to remove the existing original lock nut and freehub body. Hold the pulley with your free hand for stability.
   
   *KICKR v6 and updated thru axle adapter kits come with lock nuts with 14mm wrench flats, rather than 17mm.
   
   
   
   
   
   
3. Install the original freehub's inner spacer onto the pulley axle.
   
   
   
4. Install the new XD/XDR freehub over the original inner spacer, rotating counterclockwise (in the direction of the pawls) until flush against the pulley.
   
   
   
   
   
5. Screw on the new XD/XDR lock nut* (which is smaller than the original) and tighten with the 17mm** cone wrench, again holding the pulley with your other hand for stability. Tighten until snug, being sure to avoid applying excessive force.
   
   *KICKR v6 and updated thru axle adapter kits come with lock nuts with 14mm wrench flats, rather than 17mm.
   
   **KICKR v6 and updated thru axle adapter kits come with modified conical lock nuts.  If using a v6 or this updated adapter kit, please use the shorter conical XDR lock nut provided with the V6 or updated adapter kit, rather than the cylindrical lock nut pictured above.
   
   
   
   
6. For XD cassettes, install the included spacer along with any other spacers that came with the cassette
   (skip this step if using an XDR cassette).
   
   
   
7. Install your XD/XDR cassette according to the manufacturer instructions below.
   
   
   
   
8. Reinstall the correct Quick Release or Thru Axle end caps and you're ready to mount your bike and get KICKN!