e*thirteen Helix R espec E-bike Crank for Bosch CX Gen4 -5/ Brose S Mag - bronze/160,0 mm

e*thirteen Helix R espec E-bike Crank for Bosch CX Gen4 -5/ Brose S Mag

Item number: 91713
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Product Description

The e*thirteen Helix R e*spec Crank for enduro e-bikes
This Helix R e*spec e-bike crank is suitable for e-bikes with 24 mm ISIS interface, including fourth-generation Bosch CX motors, Brose S Mag and other brands. It is intended for enduro use and scores with low weight and a resistant, CNC-manufactured design. It is equipped with a self-extractor crank puller so that you can easily remove the crank when replacing the chainring, for example.

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.

Product Specifications:

Mounting:
  • crank arm only
Application:
Enduro, All Mountain, MTB

black/155,0 mm:

Crank speed:
Single-speed
Crank Arm Length:
155,0 mm

black/160,0 mm:

Crank speed:
Single-speed
Crank Arm Length:
160,0 mm

black/165,0 mm:

Crank speed:
Single-speed
Crank Arm Length:
165,0 mm

bronze/155,0 mm:

Crank speed:
Single-speed
Crank Arm Length:
155,0 mm

bronze/160,0 mm:

Crank speed:
Single-speed
Crank Arm Length:
160,0 mm

bronze/165,0 mm:

Crank speed:
Single-speed
Crank Arm Length:
165,0 mm

silver/155,0 mm:

Crank speed:
Single-speed
Crank Arm Length:
155,0 mm

silver/165,0 mm:

Crank speed:
Single-speed
Crank Arm Length:
165,0 mm

silver/160,0 mm:

Crank speed:
Single-speed
Crank Arm Length:
160,0 mm

Technical Information:

Crank Arm Material:
Aluminium
Recommended Inner Bearing:
ISIS
Compatible Hub Spacing:
Boost, Non Boost

Compatibility:

  • 24 mm ISIS mount - Bosch Gen4+5 - Brose S Mag

Product Features:

  • strong e-bike crank arms for enduro e-bikes tested according to EN17406 Category 4
  • light and robust
  • CNC manufactured
  • integrated crank removal tool
  • short length for high ground clearance

Manufacturer Number:

  • black/155,0 mm: CS4EAA-100
  • black/160,0 mm: CS4EAA-101
  • black/165,0 mm: CS4EAA-102
  • bronze/155,0 mm: CS4EAA-103
  • bronze/160,0 mm: CS4EAA-104
  • bronze/165,0 mm: CS4EAA-105
  • silver/155,0 mm: CS4HAA-102
  • silver/165,0 mm: CS4HAA-104
  • silver/160,0 mm: CS4HAA-103

Contents:

  • 2 x e*thirteen Helix R e*spec e-bike crank arms
  • 2 x e*thirteen Crank Protectors

Weight:

  • bronze/160,0 mm: 431 g

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/155,0 mm, available from 30.11.2025
    137.99€
  • black/160,0 mm, Shipping in 1-3 business days
    147.99€
  • black/165,0 mm, Shipping in 1-3 business days
    147.99€
  • bronze/155,0 mm, currently not available
    144.99€
  • bronze/160,0 mm, currently not available
    148.99€
  • bronze/165,0 mm, Shipping in 1-3 business days
    144.99€
  • silver/155,0 mm, currently not available
    147.99€
  • silver/165,0 mm, currently not available
    142.99€
  • silver/160,0 mm, Shipping in 1-3 business days
    145.99€

Customer Reviews (2)

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Customer Reviews (2)

5.0/5.0
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Give us your opinion on this product.

  • 5 out of 5 stars
    by Christoph H. on 24.07.2025 item: bronze/165,0 mm

    Montage war sehr simpel, Passgenauigkeit auf meinem Bosch CX Gen 4 Smart scheint perfekt zu sein. Optisch in Bronze mit schwarzem Kettenblatt und goldener SRAM Kette ein absolutes Highlight. Es liegen noch Schutzfolien für die Kurbeln bei. Die Staubkappe an der antriebsseitigen Kurbel funktioniert perfekt zusammen mit einem ethirteen Kettenblatt.

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  • 5 out of 5 stars
    by Raymond S. on 19.06.2025 item: bronze/160,0 mm

    Super Qualität, Passt klasse und sieht Mega aus!!

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