Gates Carbon Drive CDX Rear Sprocket – for Enviolo hubs
The Gates Carbon Drive CDX Rear Sprocket – for Enviolo hubs is the current stainless steel CDX rear sprocket for Enviolo continuously variable hubs with the 9-spline driver, in the Gates FINLINE design, 22 teeth.
Why choose this rear sprocket?
Stainless steel. Wear-resistant aerospace stainless steel from the strongest Gates line.
Enviolo 9-spline fit. Made for Enviolo hubs with the 9-spline sprocket interface.
Smooth, stepless riding. A belt drive suits a continuously variable hub: no gears to click, no chain to oil.
CenterTrack, 11 mm pitch. Runs with CDX, CDC and CDN belts.
Technical data
| Property | Value |
|---|---|
| Gates line | CDX |
| Material | Aerospace stainless steel (Gates Europe data) |
| Colour | Silver |
| Mount | Enviolo, 9-spline |
| Design | FINLINE |
| Teeth | 22T |
| Pitch | 11 mm |
| Gates article no. | 7898-00737 (XF1122E9MN) |
Frequently asked questions
Which version do I need – this one or the OLD one?
This is the current Gates sprocket for Enviolo hubs with the 9-spline interface (type XF…E9MN). Older Enviolo/NuVinci hubs use the earlier CENTERFLANGE sprocket (type CT…VMN), which we sell as “Gates Carbon Drive CDX Rear Sprocket – for Enviolo hubs (OLD)”. The type designation is marked on the sprocket; if you are unsure, send us your hub model and we will check.
Which tooth count should I choose?
It depends on your gearing and the front sprocket, and the belt length follows from both. Gates offers a free Gearing and Center Distance Calculator in its Gates Sanity Check. Send us your frame, crank and hub and we will help you choose.
When should I replace a sprocket?
Worn teeth cause noise, tooth jump and faster belt wear, so replace the sprocket when the teeth are worn.
About Gates Carbon Drive
Gates Corporation has been a global leader in power transmission and belt drive technology since 1911. In 2007 it launched the first belt drive system for bicycles, and today more than 1,000 bike brands worldwide use Gates Carbon Drive.