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- USA
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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
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Description
Neutron Crank ArmENGINEERED FOR: Weight Weenies Upgrade Specialists Custom Bike Builders Lighter. Stiffer. Faster. The Ultimate Crank Arm Upgrade. Experience a tangible performance boost with the Neutron Carbon Crank Arm. Meticulously engineered from full carbon fiber, this crankset is a testament to our obsession with stiffness, low weight, and rider friendly design. It represents a significant leap forward, offering a 25% increase in stiffness and a 12% reduction in
ENGINEERED FOR: Weight Weenies | Upgrade Specialists | Custom Bike Builders
Lighter. Stiffer. Faster. The Ultimate Crank Arm Upgrade.
Experience a tangible performance boost with the Neutron Carbon Crank Arm. Meticulously engineered from full carbon fiber, this crankset is a testament to our obsession with stiffness, low weight, and rider-friendly design. It represents a significant leap forward, offering a 25% increase in stiffness and a 12% reduction in weight over our previous generation.
At a mere 335 grams (for a set of two arms and spindle), the Neutron Crank Arm is the perfect foundation for a featherlight build, providing the rigidity needed for explosive sprints and efficient climbing.
The Neutron Advantage: Designed for the Rider
We focused on the details that matter most to mechanics and discerning cyclists:
•Effortless Installation: Built with a 24mm aluminum spindle and a SRAM 8-bolt mount, installation is straightforward. No proprietary tools or heavy-duty torque wrenches required.
•Seamless Integration: A Q-factor identical to Shimano standards means no need for biomechanical adjustments. It’s a true plug-and-play upgrade.
•Clean & Simple Setup: Forget fumbling with extra spacers. Our design ensures a faster, cleaner, and more precise installation right out of the box.
Build Your Perfect Drivetrain
The Neutron Crank Arm is the versatile heart of your custom setup. Choose your path:
•Power-Ready: Select the SIGEYI AXO power meter spider for world-class, dual-sided power measurement with +/- 1.0% accuracy.
•Power-Optional: Opt for the standard spider and upgrade to a power meter later.
•Pure Lightweight: Choose the "Spider WITHOUT powermeter" option for the absolute lightest configuration.
Tech Specs
•Crank Arm Material: Full Carbon Fiber
•Spindle: 24mm Aluminum
•Mount: SRAM 8-Bolt Direct Mount
•Weight: 335g (L/R arms + spindle)
•Available Arm Lengths: 165mm, 167.5mm, 170mm, 172.5mm
•Power Meter Spider (Optional): SIGEYI AXO (+/- 1.0% accuracy)
Compatibility
•Frame: Compatible with most road frames using a 24mm bottom bracket standard.
•Chainrings: Compatible with any SRAM 8-bolt direct mount chainring or power meter spider.
The foundation of speed is stiffness and low weight. Build your dream bike starting with the Neutron Crank Arm.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
great
great fit and worked flawless
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 4, 2024
★★★★★ 5
Perfect fit
As advertised perfect match and cheap.
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Reviewed in the United States on October 6, 2024
★★★★★ 5
Good
Works great!
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Reviewed in the United States on November 5, 2024
★★★★★ 1
Cheap
Cheaply made
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Works for my 2011 115hp Etec
Size: For 75-250 HP
Exact fit and cheaper than a trip to a repair shop. Make sure you have the proper gasket sealer, a good scrapper that's not going to dig into the sealing surface, and tools for the job.
I went on my computer and downloaded a video that walked me through the process. I'm a mechanic by trade but wanted to ensure everything was correct. I've been running the motor now for a couple of months. Peeing just as it's supposed to.
No more delivering, waiting, and retrieving my boat from the shop for its routine service.
Just follow your owner's manual to make sure you do all the necessary maintenance.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2025
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