Sigma One Carbon Aero Stem

Sigma One: The Pinnacle of Aero Stem Design

The TriRig Sigma One is an advanced carbon aero stem, designed to deliver unmatched integration, aerodynamic efficiency, and versatility for road, triathlon, or hybrid bike setups. Born from the innovative Alpha One aerobar, Sigma One is the only stem on the market that accepts a stack of mono risers, integrating seamlessly with the tilting Dragonfly cup mount system. This unique design allows you to adjust or remove an entire aerobar setup with just two bolts, offering unparalleled convenience.

In its base form, Sigma One is both the lightest and most aerodynamic stem in TriRig's lineup. It features integrated cable management for both cable and hydraulic systems, and front brake cable routing is built into the design without the need for complicated internal routing. This ensures a clean, streamlined look while maintaining full functionality for both rim and disc brakes.

Whether you're aiming to optimize your triathlon performance or refine your road bike setup, Sigma One provides an ideal solution with its unmatched performance and flexibility. Take your ride to the next level with this advanced carbon aero stem.

• Lightweight and Aero Design: The lightest and most aerodynamic stem in the TriRig range, ensuring maximum speed and efficiency.
• Two-Bolt Adjustability: Adjust or remove your entire aerobar setup with just two bolts for ultimate ease of use.
• Integrated Cable Management: Simplified routing for both cabled and hydraulic systems, compatible with both rim and disc brakes.
• Monopost Compatibility Kit: Allows for stack, tilt, and continuous adjustment from -5 to +17.5 degrees.
• Wide Compatibility: Works with any 22.2mm extensions, including TriRig's Gamma lineup, and fits perfectly with Scoops Arm Cups.
  

• Compatible with a variety of setups, including road, triathlon, off road tri, gravel, and hybrid bikes.
• Suitable for both rim and disc brake systems, making it versatile across a wide range of bike configurations.

Add piece of mind to your order with (Checkout+).

Checkout+ is optional shipping protection (along with free returns) designed to resolve carrier-related delivery issues more quickly.

⭐ What Checkout+ covers

• Packages that are lost or mis-delivered by the carrier
  
• Faster replacement or refund without waiting for a carrier investigation
  
• Coverage applies when the correct shipping address is entered at checkout
  

❌ What Checkout+ does NOT cover

• Incorrect, incomplete, or outdated shipping addresses
  
• Address changes requested after an order has shipped
  
• Packages delivered to the address provided during checkout
  
• Delivery issues caused by customer moves, temporary addresses, or expired delivery locations
  

Checkout+ does not override customer responsibility for entering a valid, accurate shipping address.

***Checkout+ does not override customer responsibility for entering a valid, accurate shipping address.

🌍 International Shipping & Import Fees

• We ship anywhere in the world! 
  
• International orders may be subject to VAT, duties, import taxes, and carrier handling fees
  
• These charges are assessed by the destination country and are the customer’s responsibility
  
• TriRig does not collect or reimburse import taxes or VAT unless explicitly stated at checkout
  

⚠️ We are not responsible for delivery delays, holds, or returns caused by unpaid duties, taxes, or customs clearance issues.

📦 Shipping Times

Shipping times depend on the option selected at checkout and your location. Estimated transit times are shown at checkout.

Orders may move through shipping partners before final delivery. Tracking updates can occasionally appear to move “out of direction” before routing correctly to your local carrier facility.

• All returns, exchanges and claims are handled through our self serve portal.
• Items may be returned within 30 days of the original purchase date.
• Item must be in brand new condition, uninstalled with no blemishes and complete with all original materials and packaging.
• Item must be in resell-able/re-stockable condition.
• ⭐With Checkout+: Fee returns and return shipping.
• ❌Without Checkout+: All returns will be subject to a 15% restocking fee.
• We reserve the right to deny any returns who do not meet the return conditions above. 
• If an individual item lists a deviation from this policy (such as no returns), then that deviation applies, and supersedes this return policy.
• International returns: Accepted on a case by case basis. We do not provide return labels for international returns. Orders unprotected by checkout+ are subject to a 15% restocking fee. 
• Limited warranty is valid for 1 year after purchase date. 
• Extended warranty (purchased with Redo) is valid for 2 years after purchase date.
• For more information on our warranty policy, visit our Warranty Policy page.