Signature Open Back Arm Cups

Signature Open Back Arm Cups: The Ultimate Aero Comfort Upgrade

The TriRig Signature Open Back Arm Cups are designed for comfort and performance. Crafted from our ultra-strong, lightweight ThermoPlast™ material, these arm cups offer superior strength and durability at our most affordable price point ever.

Triathletes and time-trial cyclists who use our Signature Open Back Arm Cups stay comfortable in the aero position longer due to the textured neoprene pad that provides the perfect balance of grip and cushion. These cups also feature an increased adjustment range, thanks to additional mounting points and slotted bolt holes, making them the most universal cups on the market. 

For enhanced cockpit compatibility, consider adding Wingspan Extenders to your cart. If you need hardware for Speed Concept compatibility, add it to your cart as well.

• At 365 grams per set, these cups deliver minimal weight with maximum comfort.
• Ergonomic Support: Increases arm wrap and surface area for a more comfortable ride, ideal for extended use.
• Extended Adjustment Range: Features multiple mounting points and slotted bolt holes to accommodate various setups.
• Textured Neoprene Pads: Provides superior grip and cushioning for enhanced comfort and stability.

• ⚙️ Compatibility: Scoops mount using two fore/aft bolts into matching threaded bosses on your arm-pad bracket/aerobar. Check that your bracket’s hole pattern aligns; both bolts must be used for a safe, stable install. Non-standard patterns may require Wingspan Extenders.
• Fits most aerobars on the market, including Alpha Prime.
• Comes with M5 and M6 bolts for easy installation.
• The Open Back SL Carbon Arm Cups are not recommended for use on the Trek Speed Concept Gen 3 (2022+) due to their narrower hole pattern.
• 🔧 Need help with the install? See our install guide.

Orders start processing fast!  We aim to have orders, placed before noon MT on business days (non-holiday Mondays through Fridays), leave the warehouse that same day. Orders placed after noon (MT) on a business day, or on a weekend, will ship the following business day. 

TriRig ships most packages via OSM / USPS and FedEx although we may change these at any time. 

📦 Shipping Insurance:

To add piece of mind to your order, we offer shipping insurance (Checkout+) for domestic and international customers. Checkout+ is a completely optional shipping protection that helps resolve carrier-related delivery issues more quickly. (This service is also combined with free returns). 

⭐What Checkout+ covers:

• Packages that are lost or mis-delivered by the carrier

• Faster replacement or refund without waiting for a carrier investigation to complete

• Coverage applies when the correct shipping address is entered at checkout

❌What Checkout+ does not cover:

• Incorrect or incomplete addresses entered at checkout

• Address changes after an order has shipped

• Packages delivered to the address provided during checkout

• Delays or 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.

🌍 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.

• 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.