L-TWOO eRX: electronic groupset with carbon brake levers
Contents
In short
- The L-TWOO eRX is the brand's top-of-the-range wireless 2x12 road groupset.
- Shift/brake levers with carbon brake blades, new-generation blue-grey derailleurs.
- Integrated hydraulic disc brakes, battery hidden in the seatpost, USB-C charging.
- Works with 10, 11 and 12-speed cassettes.
- Price: 272 900 Ft.
What is the L-TWOO eRX?
The L-TWOO eRX is the groupset L-TWOO used to enter the world of electronic road shifting in 2023. One press of a button and the shift happens quickly and precisely, in rain, wind and mud. The shift/brake levers with carbon blades, the new-generation front and rear derailleurs and the integrated hydraulic disc brakes form a light, unified system.
road.cc took notice right at the launch and compared it with Shimano 105 Di2, at a much lower price.
What's in the box?
| Component | Model and details |
|---|---|
| Shift/brake levers | ST-ER1202-L / -R, wireless, with carbon brake blade |
| Front derailleur | FD-ER1204; max. 54T, 16T capacity, chainline 43.5–44.5 mm |
| Rear derailleur | RD-ER1203; largest sprocket 28–32T, smallest 11T |
| Brakes | Hydraulic, 160 mm flat mount calipers, finned pads |
| Battery | BT-ER02, seatpost-mounted |
| Charging | USB Type-C |
| App | L-TWOO APP (iOS, Android) |
| Colour | Black / blue-grey |
| Not included | Crankset, chain, cassette, rotors |
| Price | 272 900 Ft |
The road.cc review in detail
The road.cc review gives an honest picture, so it's worth going over the key points:
- Weight: the weighed groupset came in at 1267 grams, similar to the claimed figures for Shimano 105 and SRAM Rival according to their comparison.
- Positives: light, easy to charge via USB-C, works with 10–12-speed cassettes, the carbon brake blade keeps weight down, and it works well once set up.
- Negatives: setup needed a lot of fine-tuning, bleeding the brakes took several attempts, the hoods are harder and less grippy, and shifting isn't as refined as Shimano or SRAM systems.
- Buying: when ordering directly from abroad, warranty claims can be more complicated.
Overall, the site gave the groupset a cautious recommendation. That's useful context: the eRX isn't a Dura-Ace rival but an affordable route into electronic shifting, where careful installation makes a big difference.
Installation tips
- Plan for some fine-tuning in the app before your first ride.
- If you have no experience bleeding hydraulic brakes, leave it to a workshop.
- Check that the battery fits in your seatpost and that your frame is suitable for routing hydraulic hoses.
- Keep the derailleur limits in mind: max. 54T up front, largest rear sprocket 28–32T.
eRX or eR7?
- eRX (272 900 Ft): carbon brake blades, new-generation derailleurs, blue-grey finish.
- eR7 (161 900 Ft): aluminium brake blades, the same wireless system, at a lower price.
If you're looking for a groupset for a lightweight carbon build and looks matter to you, the eRX is the better choice. If the electronic shifting experience is what counts most, the eR7 gives you the same. For time trials, the eRX-TT brings the eRX system with shift buttons on the aero extensions.
Who is it for?
- Builders of carbon-framed bikes looking for a light, complete electronic groupset.
- Riders who want to move from mechanical to electronic shifting below the price level of the big brands.
- DIY cyclists who like fine-tuning from their phone.
Why buy from Premiumbike?
You buy from a local web shop, so you avoid the uncertainty of ordering from abroad that road.cc also mentioned, and we answer your questions personally. We ship in-stock groupsets within 2–4 working days for free, because the eRX costs more than the 75 000 Ft threshold, and you have a 14-day right of withdrawal.
Check out our L-TWOO brand page and all electronic road groupsets, or order the L-TWOO eRX groupset now.
