Jetblack Victory XDR Freehub Body
JBT-SP-VIC-XDR
A freehub swap for Victory owners running a SRAM AXS drivetrain outdoors, built to carry that same cassette onto the trainer indoors, with a bundled spacer so a narrower cassette still seats correctly.
Overview
JetBlack's Victory smart trainer ships with a Shimano HG-compatible freehub and a pre-installed Zwift Cog, a setup that lets almost any bike hop onto the trainer without matching cassettes. That convenience comes at a cost for riders on SRAM's XDR-only road groupsets, since an XDR cassette simply won't seat on a standard HG freehub body. This accessory replaces the Victory's freehub with one built to the XDR spline, so the cassette already on your road bike slides straight onto the trainer.
The freehub body is sold with a 10-speed cassette spacer included, needed only if you're running a narrower 10-speed cassette rather than an 11- or 12-speed one. Fitting it means first removing the Zwift Cog from the Victory's stock freehub (JetBlack's own setup guide calls for a chain whip and a cassette lockring tool, both sold separately), then sliding this XDR body into place before mounting your cassette and securing it per the cassette manufacturer's torque spec.
It's purpose-built for the Victory's freehub interface rather than a generic XDR body, so it's the straightforward route for Victory owners who don't want to keep a second cassette on hand just for indoor sessions.
Why You'll Like It
Run the exact cassette you already own
No need to buy and maintain a duplicate cassette just for the trainer — your SRAM AXS road cassette moves straight from the bike to the Victory and back.
Spacer included for 10-speed setups
A 10-speed cassette spacer ships with the freehub body, so narrower cassettes seat correctly without needing to source one separately. 11- and 12-speed cassettes mount directly.
Built for the Victory's own freehub interface
This body is engineered to JetBlack's Victory freehub mount specifically, rather than being a generic aftermarket XDR part adapted to fit.
Switch back to the stock setup when you want to
The Victory's original Shimano HG freehub with its Zwift Cog isn't lost when you install this — it comes back off the same way, so multi-bike households can swap freehubs between sessions.
Who Is It For?
This is for Victory owners whose road bike runs a SRAM eTap AXS or other XDR-only drivetrain and who'd rather not keep a spare cassette just for indoor riding. If your outdoor bike already has an XDR-driver cassette on it, this lets that same wheel-side setup carry over to trainer sessions without a cassette swap every time you move the bike indoors.
It also suits anyone building out a dedicated indoor setup for the monsoon months or peak-summer heat here in India, where a growing number of road riders are on newer SRAM AXS groupsets and want their Zwift or TrainerRoad sessions to mirror their actual gearing as closely as possible.
Good to Know
Installing the freehub body is a standard freehub swap: remove the Zwift Cog from the Victory's stock freehub using a chain whip and cassette lockring tool, fit this XDR body in its place, then mount your cassette and torque it down per your cassette's own instructions. Your local bike shop can handle the swap if you'd rather not do it yourself.
Keep the stock Shimano HG freehub and Zwift Cog aside once removed — since the swap is fully reversible, you can switch back to the Cog-and-Click setup any time you want to let a different bike (or a different cassette) use the trainer without needing to match drivetrains.
Technical Specifications
- Freehub Type: SRAM XDR
- Compatible Trainer: JetBlack VICTORY Smart Trainer
- In The Box: XDR freehub body, 10-speed cassette spacer
Additional Information
- Country of Origin: China
- Imported By: Aetos Sports LLP, 115, Maker Chambers V, Nariman Point, Mumbai - 400021, Maharashtra, India.
- Net Quantity: 1N
- Customer Care Address: 291, 10 Main, 5 Block, Jayanagar, Bangalore - 560041. Ph: (080)47183232, Email: support@bumsonthesaddle.com
- Commodity: Trainer Accessories