Sigma Sports is offering the Shimano Ultegra R8170 Di2 Disc Groupset for £1,099 in its Black Friday Early Access sale. That’s £1,160 off its £2,259 reference price, a saving of 51% as advertised by Sigma.
If you’re upgrading a hydraulic disc brake road bike or buying parts for a new build, Sigma gives you a choice of compact 50/34 or mid-compact 52/36 chainrings. The listing shows crank lengths from 165mm to 175mm. Select your combination to check the price and availability.
Check the £1,099 Sigma Sports offer on Velostrive
What’s included in the Sigma Sports bundle?
The bundle includes Ultegra Di2 shifters, hydraulic flat-mount brake calipers, front and rear Di2 derailleurs and an Ultegra FC-R8100 chainset. Sigma also lists a Shimano 105 11–34T cassette, a Shimano M7100 chain, 160mm RT-CL800 rotors, the internal Di2 battery and its charging cable.
Budget separately for the Di2 wires and bottom bracket. Check the rotor sizes your frame and fork accept before ordering, and choose a bottom bracket to suit your frame.
How does it compare with the Tredz Ultegra Di2 deal?
Sigma’s £1,099 price is £100.99 below the £1,199.99 Tredz deal we highlighted on 2 November. Tredz has since listed its bundle at £1,069.99, making it £29.01 less than Sigma at the time of checking.
| Feature | Sigma Sports | Tredz |
|---|---|---|
| Advertised price | £1,099 | £1,069.99 |
| Chainset options shown | 50/34 or 52/36, with several crank lengths | 50/34 with 172.5mm cranks |
| Cassette and chain | 105 CS-R7100 11–34T and CN-M7100 chain | Ultegra CS-R8101 11–34T and CN-M8100 chain |
| Di2 wires | Sold separately | Two SD300 wires listed |
| RT-CL800 rotors | 160mm listed | 140mm and 160mm listed |
If 172.5mm cranks and 50/34 gearing suit your build, the Tredz Ultegra Di2 bundle costs less and includes the Di2 wires. Sigma is worth a look if you want shorter cranks or prefer 52/36 gearing.
Explore more Shimano Di2 deals, browse Shimano groupsets or compare road bikes with Shimano Ultegra.
