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SKU: FW8999

Shimano Nexus 21-Tooth Silver Cog for 3-Tab Coaster Brake & Internal Gear Hubs | Compatible with 1/8" & 3/32" Chains | Durable Steel Construction, Precision Engineering, and Seamless Performance

Regular price $9.37
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Description
Specifications

Upgrade your bicycle's drivetrain with the Shimano Nexus 21T Cog in sleek Silver - the perfect component for enhancing performance and durability in internal hub systems. Designed to deliver smooth shifting and reliable power transfer, this cog is an essential upgrade for urban commuters, mountain bikers, and casual riders alike.

Materials & Construction:

Manufactured from high-quality steel, the Shimano Nexus 21T Cog offers exceptional durability and resistance to wear, ensuring long-lasting performance even under rigorous riding conditions. The silver finish not only provides a sleek, modern aesthetic but also offers corrosion resistance for added longevity.

Performance & Engineering:

Engineered for precision, this 21-tooth cog optimizes gear ratios for efficient pedaling and effortless climbs. Compatible with both 1/8" and 3/32" chains, it provides versatile integration with various drivetrain setups. Its compatibility with Shimano's internal hubs ensures smooth engagement and reliable power transfer, making every ride more comfortable and efficient.

Components & Technology:

Designed to fit most 3-tab coaster brake and internally geared hubs with spline pattern drivers, this cog ensures a secure, snug fit for seamless shifting performance. The standard 21-tooth size strikes a balance between speed and torque, catering to diverse riding styles and terrain.

Style & Use Case:

With its sleek silver finish, this cog adds a touch of modern style to your bicycle's drivetrain. Ideal for urban cycling, trail riding, or casual commuting, the Shimano Nexus 21T Cog enhances your bike's internal gear hub system by providing consistent performance and maintenance-free operation.

Innovative Features:

Shimano's commitment to quality delivers a product designed for easy installation and long-term dependability. Its compatibility with both coaster brake and internal gear hubs makes it a versatile choice for various bicycle models and riding preferences.

Upgrade your bike today with the Shimano Nexus 21T Cog Silver - a durable, performance-driven component that ensures a smooth, reliable ride every time.

  • High-performance 21-tooth steel cog designed for durability and long-lasting wear, ensuring smooth drivetrain operation on commuter and city bikes.
  • Engineered to fit most 3-tab coaster brake and internally geared hubs, providing versatile compatibility with both 1/8" and 3/32" chains for seamless integration.
  • Constructed with high-quality materials and precision manufacturing standards, this Shimano Nexus and Alfine cog offers reliable performance under daily riding conditions.
  • Ideal for urban cyclists and commuting bikes, the sleek silver finish adds a stylish touch while optimizing gear engagement and shift efficiency.
  • Features innovative spline pattern compatibility, allowing easy installation on coaster brake hubs and increasing overall bike performance and maintenance ease.
Tooth Count21
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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!

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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.

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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!

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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.

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Ben Berman Founder & CEO of 365 Cycles


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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. 

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Customer Reviews

Based on 9 reviews
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T
Tim o Tee

Arrived quickly sprocket works very well feels like high quality;

L
Lewis Green

Easily installed. It does improve my lower end however I’m getting a 22 tooth.
Giving up top speed is not problematic.
Getting up steeper hills was my goal steeper=greater heart rate;

D
Dino L.

works well;

D
D. Holland

Running on SRAM 2 speed hub for commuter bike and this along with a 48 tooth front provides good climbing and good top-end speed. One downside is that on the SRAM hub it's a little loose side-to-side...a little wiggle but you don't feel it when peddling. Overall the build quality is pretty good.;

D
DH

Perfect Thanks!;