Over 2,000,000 Million Customers Served!!!

Need Help? Click the Live Chat to Talk to a Gearhead 💪

Enjoy Free Shipping on Orders Over $75 – Available Within the Lower 48 States!

Load image into Gallery viewer, ethirteen-Helix-ESpec-Crank-170-mm-EBCK0064
Load image into Gallery viewer, e*thirteen Helix e*spec Crank Arm Set - 170mm, BOSCH Gen4-Brose S Mag-TQ HPR50, with Self Extractor, Black
Load image into Gallery viewer, e*thirteen Helix e*spec Crank Arm Set - 170mm, BOSCH Gen4-Brose S Mag-TQ HPR50, with Self Extractor, Black
Load image into Gallery viewer, e*thirteen Helix e*spec Crank Arm Set - 170mm, BOSCH Gen4-Brose S Mag-TQ HPR50, with Self Extractor, Black
Load image into Gallery viewer, e*thirteen Helix e*spec Crank Arm Set - 170mm, BOSCH Gen4-Brose S Mag-TQ HPR50, with Self Extractor, Black

SKU: EBCK0064

e*thirteen Helix e*spec Crank Arm Set - 170mm, BOSCH Gen4-Brose S Mag-TQ HPR50, with Self Extractor, Black

Regular price $92.31
$93.95 Sale price $92.31 Regular price
Sale Sold out
Unit price
/per 
Save 2%
  • Free Shipping Over $75
  • 30 Day Returns
  • Satisfaction Guaranteed!

$10 Gift Card

at 250 points

$25 Gift Card

at 500 points

$75 Gift Card

at 1,000 points

This is a pre order item. We will ship it when it comes in stock.

$10 Gift Card

at 250 points

$25 Gift Card

at 500 points

$75 Gift Card

at 1,000 points

Description
Specifications

Upgrade Your E-Bike Performance with the ethirteen Helix espec Crank Arm Set - 170mm, BOSCH Gen4-Brose S Mag-TQ HPR50

Enhance your e-bike's efficiency and style with the ethirteen Helix espec Crank Arm Set, a premium drivetrain upgrade engineered for durability, performance, and sleek aesthetics. Designed for high-end e-bike applications, this crank arm set is compatible with leading motor systems including Bosch Gen4, Brose S Mag, TQ, Fazua, Yamaha, Maxon, and Specialized Brose, ensuring seamless integration across various e-bike platforms.

Materials & Construction:

Crafted from forged, CNC-machined AL-6066-T6 aluminum, these crank arms deliver exceptional strength-to-weight ratio, ensuring reliability during aggressive riding sessions. The black anodized finish not only provides corrosion resistance but also a refined, stylish look suitable for any e-bike build.

Performance & Engineering:

Built for e-Enduro riding, the Helix core crank arms feature forged resilience designed to withstand the rigors of technical trails and steep ascents. The 170mm crank length offers an optimal balance of power transfer and pedaling comfort, while the 24mm ISIS spindle interface guarantees a secure fit with compatible motor systems. The inclusion of alloy self-extractor bolts and molded impact boots enhances durability, making this crank set a long-lasting upgrade.

Components & Technology:

This crank arm set includes alloy self-extractor bolts and pedal washers for easy maintenance and compatibility with standard 9/16" pedals. Note that the chainring is sold separately, giving riders flexibility to choose the best gearing for their riding style and terrain.

Style & Use Case:

Ideal for e-Enduro riders, trail enthusiasts, and aggressive mountain bikers, the Helix espec Crank Set combines sleek matte black aesthetics with high-performance engineering. Available in 170mm lengths and an alternative 155mm for improved pedal clearance, these cranks are perfect for riders seeking enhanced pedaling efficiency, increased clearance on technical descents, and a stylish upgrade for their electric mountain bike.

Innovative & Differentiating Features:

- Forged CNC aluminum construction for maximum strength and precise machining.

- Compatibility across multiple motor systems including Bosch Gen4, Brose S Mag, and TQ.

- Adjustable crank length options (170mm and 155mm) for personalized fit.

- Impact-resistant molded boots and alloy self-extractor bolts for durability and ease of maintenance.

- Sleek, black anodized finish for an aggressive look and corrosion resistance.

Maximize your e-bike's performance and style with the ethirteen Helix espec Crank Arm Set - engineered for strength, optimized for riding experience, and designed to turn heads on every trail.

  • High-performance forged AL-6066-T6 crank arms offer exceptional strength and durability for e-bike applications, ensuring reliability on challenging trails and daily commuting.
  • Optimized for Bosch Gen4, Brose S Mag, TQ, Fazua, Yamaha, Maxon, and Specialized Brose motors with a versatile 24mm ISIS spindle interface, providing seamless compatibility across leading e-bike systems.
  • Enhanced engineering includes molded impact boots, alloy self-extractor bolts, and pedal washers, delivering superior protection, easy maintenance, and a secure fit for reliable power transfer.
  • Sleek black finish combined with a lightweight design makes these 170mm crank arms ideal for e-Enduro riding, while the available shorter 155mm length improves pedal clearance and rider comfort.
  • Innovative self-extractor technology simplifies crank arm removal and installation, enabling quick upgrades and maintenance, making these cranks the perfect choice for performance-conscious e-bike riders.
ColorBlack
Crank Length (mm)170
Pedal Spindle9/16"
Designed for ebikeYes
Defined ColorBlack
Shipping
Returns
About Us
Contact Us

We pride ourselves on our ability to ship and deliver your gear with excessive speed! We ship from 22 locations throughout the United States and most orders will arrive in 3 days or less with Free Shipping on orders over $75!

The nitty gritty, for specific delivery timelines please pay attention to the delivery timelines on the product pages and the time frame estimated in the carts. If you need a part by a specific day, please contact us by chat, phone, or

Chat

Talk with a representative

Start Chat

Email

info@365cycles.com

Send Email

Phone

603-968-5797

Call Now

Most orders placed during the workweek before 1:00 PM Eastern time ship the same day, but during peak/holiday season or depending on inventory location handling time can take up to 48 hours. If you have questions regarding shipping estimates, don't hesitate to get in touch with us before placing the order. There is a direct signature requirement for all orders over $500.

We provide the you the ability to utilize multiple shipping & billing addresses, based upon what fits your current needs. However you are responsible to maintain and update any new address changes, as 365 Cycles will not be held liable for orders being shipped to an incorrect address.

  • Our Mistake: If we messed it up you can rest assured we are going to make it right. Contact us by email, phone, or chat and we will make your head spin with how quick we fix it
  • Warranty: We are an authorized retailer for everything we sell, so rest assured your product is covered under the manufacturer's warranty. Contact Us if you are having an issue and we will make sure you are taken care of
  • Just don't want it anymore: We have a 30-day return policy for orders within the US. We offer refunds on returned items that are brand new and in their undamaged, original packaging. Customers are responsible for the cost of return shipping. Damaged, installed, and used items as well as those without original packaging are not eligible for returns. If it's returned in this condition it may be denied and sent back to you

If you need to return your order please email us at info@365cycles.com, call us at 603-968-5797, or use the live chat on our site.

Chat

Talk with a representative

Start Chat

Email

info@365cycles.com

Send Email

Phone

603-968-5797

Call Now

*Please allow up to 3 business days for us to process your return*

365 Cycles puts the customer above everything. Our number one goal is your satisfaction. When you press the shift lever you want the gears to shift, and when you buy bicycle parts, you want the bicycle parts to arrive on time in new condition. With over 60,000 products and 22 warehouse locations throughout the country, we have the parts you need and they are coming in hot!

Living an active lifestyle is just that, a lifestyle that never goes away and our goal is to always exceed your expectations so we can take this lifelong journey together. We strive to have the parts you need, at competitive prices with unmatched shipping speeds!

If there is ever an issue with an order we will work at warp speed to fix our mistake and make sure you never go a day without a bicycle! If you are not receiving the quality of service you need from one of our exceptionally qualified bicycle experts, tell them Ben Berman told you to tell them "Customer Loyalty" and then name your terms.

Our team is waiting to help you 7 days a week and they are more qualified to help than I am but if you ever feel like you're not getting the service you need I’m personally asking you to email me at ben@365cycles.com with "CUSTOMER LOYALTY" in the title and I will personally handle your order.

Over the years we have served millions of satisfied customers and continue to serve many of them today. With your feedback, we are confident we can take this lifelong journey together and build a friendship that goes beyond parts and accessories.

“If you want to go fast, go alone, if you want to go far, go together.” -Someone Smart

Ben Berman Founder & CEO of 365 Cycles


Company Core Values: 

These were established by the members of our team and we use them every week to call out team members who have shined in one of these areas. Feel free to let us know at info@365cycles.com if someone you worked with has gone above and beyond in one of these areas. 

Customer Loyalty

Put yourself in their shoes and support those who support us.

You Control the Outcome

If it is to be, it’s up to me" You are personally responsible for controlling the outcome.

Seek Understanding

Understanding the answer is more important than the answer.

Progress Not Perfection

Pick a direction, analyze the results, and be willing to change course.

Will to Win

Customers, 365 Team, Partners, all need the will to win. Bring the Will to Win to every conversion.

Keep Moving

Move the body, move the mind, and remove any hurdles to achieving an active lifestyle.

Do the Right Thing:

Doing the right thing is more important than doing the thing right.

Stronger together:

If you want to go fast, go alone, if you want to go far, go together. Get your team involved and become stronger together.

Chat

Talk with a representative

Start Chat

Email

info@365cycles.com

Send Email

Phone

603-968-5797

Call Now

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)