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Seatpost > International

In the S311E version, the light is powered via a cable connected to an external power source. For example, to the battery of a bicycle with electrical pedal assistance.

S341E may not be used on German roads.

Features +

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Product Details
  • Features

    Patented seatpost with an integrated seat rail clamp. The seatpost tube features 5 holes in which the LEDs are enclosed. A cable with a connector extends out of the lower end of the seatpost tube for connection to the electrical system of the e-bike.


    27.2 / 31.6



    Color and surface finish

    Polished Silver, Matt Black

    Seatpost Type

    2 bolt clamp, offset 9

    Seatpost material

    Aluminum 6061 T6 

  • Light unit

    The 5 LEDs are sunk into the seat post tube. The LEDs, circuit board and battery are enclosed in a plastic housing and are thus protected (dust and splash proof in accordance with IPX5).

    Lens Type

    Non Protruding

    Light Module

    5 high brightness red LEDs, Non protruding LED Lens



    Power Source

    The on-board battery of the e-bike. The rear light can be operated with 6V as well as with other e-bike electrical system voltages up to a maximum of 12V.

    The electrical connection is made with different cables and connectors in compliance with the relevant regulations.

    Nominal voltage

    DC 6V (6V 12V)

    Power consumption


  • ETC

    Seatpost test standard

    EN 15194

    Compliant with

    standard or directive


    Package Contents

    Rear light seatpost

How to Use
  • Assembly

    Use the correct diameter corresponding to your bicycle frame.

    Use the appropriate tool to fasten the saddle support.
    The minimum insertion length into the frame is 100mm. The rear light must be aligned so that it shines backward.

    Connecting to the power source

    The connector of built-in light seatpost and the connector of power source should be compatible, which must be ascertained before the purchase of the product. 

  • Function

    The rear light is operated by the light switch of the e-bike system.

    When switched on, all 5 LEDs light up.

  • Precautions

    At startup, the product must be dry. Remove any moisture before riding. After installation, test that the seatpost does not drop under load. Take care that the LEDs are not covered by a bag or clothing when riding. Do not make any independent changes to the product. Do not try to open the product.

    Steps to take in

    the event of a failure


    If the rear light is defected, it must be immediately replaced.

    If you ride with the seat post low, it may be the case that the seat clamp covers one of the lenses. Please ensure that the clamp area is not directly tightened on to the lens as per the illustration below.

    Operating Temperature

    Min: -15° C

    Max: 45° C

    Optimum storage temperature: 20-25°C

  • Shipping

    Please be aware before order. The import tax will be charged to you separately. Taxes may vary depending on the country. If you want to return or exchange, you will be charged a Fedex round-trip shipping fee. Prices are inclusive of basic international shipping. Regions where additional shipping fee are generated will be charged at the payment window.

  • Returns and Exchanges


    Please send us unused products by prepaid, will refund you after confirming arrival.


    Please send us unused items by prepaid, and send $25~$35 re-delivery courier fee depending on your location. After receipt the goods and courier fee, we will replace it with another product.

  • Warranty

    Seatpost and light module: 2 years from the date of purchase.

    In case of warranty, (replacement or repair), please contact the distributor through whom the product was purchased.

  • Waste Disposal


    The product packaging is made of recyclable materials.

    Dispose of these environmentally friendly in the provided collection containers.


    Old appliances and batteries must not be disposed of with normal household waste.

    According to EU Directive 2012/19/EU, the product must be disposed of properly at the end of its service life. Return the old device to a collection point for electronic waste or a recycling center.

  • Malfunctions


    The LEDs are numbered from top to bottom

    If LED numbers 4 or 5, or 4 and 5 are defective, it is permissible to switch to the 3-LED mode, which complies with the approval. A repair or replacement is still recommended.

    If LED numbers 1, 2 or 3 are defective, the seatpost must be sent to the importer for repair or completely replaced.

  • Evergreen I&D
  • 1273-39, Bamtijae-to, Geochang-eup, Geochang-gun,
  • Gyeongsangnam-do, Republic of Korea