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Supernova E3 Tail Light 2 – Seat Post, 6V, Black
The Supernova E3 Tail Light 2 – seat post version (6 V, N-TK2-S-BLK) – is a small, 100% waterproof dynamo tail light. It runs from the 6 V system of your Supernova dynamo front light and shares its parking-light function, so you stay visible even at red lights.
Why the E3 Tail Light 2?
Dynamo powered. Always on when you ride, never runs flat. 
Parking light. Stays lit while you wait at junctions, together with your Supernova dynamo front light. 
100% waterproof. Supernova specifies it as fully waterproof – for year-round riding. 
Small and simple. Connects to the tail-light output of the front light with a single cable. 
Guarantee. 5 years; at least 10 years repairability.
For bikes without a rack
The seat post version clamps to the seat post – the natural place for a rear light on bikes without a rack or full mudguards.
Being seen from behind is what keeps you safe in traffic. A dynamo tail light is always on when you ride.
Important: 6 V only. A higher voltage damages the electronics – this light is not suitable for current Bosch e-bike systems.
Who is it for?
- Hub-dynamo bikes with a Supernova E3 front light. A matching rear light from the same system.
- Bikes without a rack. The light sits on the seat post.
- Year-round riders. A light that is always on.
Specifications
| Model | Supernova E3 Tail Light 2, seat post version (N-TK2-S-BLK) |
|---|---|
| Power | 6 V DC from the dynamo front light, 0.5 W |
| Functions | Parking light with Supernova dynamo front lights |
| Mount | Seat post |
| Works with | Supernova E3 dynamo front lights (6 V); not for current Bosch e-bike systems |
| Guarantee | 5 years; at least 10 years repairability |
Frequently asked questions
Does the E3 Tail Light 2 work with any dynamo front light?
It needs a 6 V system. The parking-light function works in combination with Supernova dynamo front lights.
Can I use it on an e-bike?
Only on a 6 V light output. It is not suitable for current Bosch e-bike systems.
Is it waterproof?
Yes – Supernova specifies it as 100% waterproof.
Seat post, rack or mudguard version?
Choose by where the light sits on your bike: this is the seat post version. There are also rack (50 mm hole spacing) and mudguard versions.
Bought from BoodaBike. We ride and fit Supernova lights on our own belt-drive and hub-gear bikes. Not sure which light, mount or tail light fits your bike? Send us a photo and we will tell you what you need. Supernova was founded in Germany in 1997. It started with a headlight its founder built for his own night training rides – after around 20,000 kilometres of riding in the dark, the company was born. Supernova lights are developed in Germany, and its top models are produced in Gundelfingen near Freiburg. The brand builds machined aluminium housings and lenses that put the light where you need it, and backs its lighting systems with a 5-year guarantee and at least 10 years of repairability.About Supernova