e*thirteen Helix Plus 12-speed Cassette

Item number: 86277
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e*thirteen Helix Plus 12-speed Cassette - black | 9-50

Product Description

The e*thirteen Helix Plus 12-speed cassette in a two-cluster design for mountain bikes


The Helix Plus cassette by e*thirteen for mountain bikes with or without e-drive has 12 sprockets, is lightweight and can be combined with SRAM or Shimano components.

Guidelines for Replacing E-bike Components:

Before you replace components on your e-bike, please read through the guidelines for component replacement for CE-marked e-bikes/pedelecs with pedal assistance.

Specifications:

Application:
Cross Country, All Mountain, Enduro
Gearing:
12-speed
Gradation:
9-11-13-15-17-20-23-27-31-36-42-50 t
Sprocket Material:
steel, aluminium
Freehub Compatibility:
SRAM XD

Technical Information:

Series:
Helix Plus

Features:

  • suitable for E-Bikes
  • pinion 1 to 10 made of steel, pinion 11 and 12 made of aluminium, optimised interface between the clusters
  • two-piece design allows replacement of the aluminium pinions
  • suitable for 12-speed drivetrains from Shimano or SRAM
  • improved shifting performance
  • large 556% gear range due to the smallest sprocket with 9 teeth, making a smaller chainring possible
  • lightweight

Manufacturer Number:
FW2HPA-100

Contents:

  • 1 x e*thirteen Helix Plus cassette

Manufacturer:

Perigeum Development Inc. DBA e*thirteen
1445 Technology Lane STE A9
Petaluma
CA 94954
USA
support@ethirteen.com

Distributor:

Cosmic Sports GmbH
Leyher Straße 47
90763 Fürth
Germany
info@cosmicsports.de

Models:

  • black | 9-50, Shipping in 1-3 business days
    84.99€

Customer Reviews (4)

3.8

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Customer Reviews (4)

3.8/5.0
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  • 5 out of 5 stars
    by Dirk M. on 21.09.2026 (modified on 21.09.2026) item: black | 9-50

    Bin super zufrieden. Schaltet nicht wirklich schlechter als eine hochwertige Sram Eagle Kassette. Vielleicht minimal härter ab und zu aber das 9er Ritzel ist ein totaler Gamechanger. Ansonsten ist die Kassette auch noch stylisch ubd 50g leichter als Sram. Habe echt lange überlegt aber für den Preis von 99 Euro im Angebot unschlagbar und habe den Wechsel keine Sekunde bereut.
    Hab die auf Trails auch schon böse gequält und scheint mir robuster als die Sram.
    Schnurrt nach mehreren Hundert Kilometern wie am ersten Tag. Klingt übrigens auch nice u unaufdringlich. Fahre Sram AXS, Eagle Kette , Carbon Kurbeln mìt 34er Blatt und läuft super.

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  • 4 out of 5 stars
    by Maxime B. on 08.06.2025 item: black | 9-50
    2 of 2 customers found this review helpful.

    Quality sure is there, it looks good, feels good. The gear changes are not as quiet as with cassettes specially designed for the drivetrain. I would say it is brutal, yet it is efficient.
    Really light.

    Only downside : installation process. I thought it was pretty easy, but it actually was not !
    DO NOT put too much grease, the tolerance are extremely tight. So if you put too much of it you won't be able to mount it.
    Even by removing the grease, I has to file down the hole for the last bolt in order to get it properly mounted ! Hours lost.

    I'd say tolerances need to be checked by e-thirteen.

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  • 1 out of 5 stars
    by Tom S. on 16.10.2024 item: black | 9-50
    0 of 1 customers found this review helpful.

    Habe die Kasette montiert und dazu eine neue Kette verwendet!! Nach 3x fahren Rutschen die Ritzel 2,3,4 und 5 durch….schlechteste Kasette bis jetzt….

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  • 5 out of 5 stars
    by Jürgen C. on 11.05.2023 item: black | 9-50

    Gute Haltbarkeit und Schaltperformance in Verbindung mit einer KMC X12 Kette auf einem Eagle AXS Antrieb.

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