Closed Back Carbon Arm Cups

Closed Back Carbon Arm Cups: Unmatched Aero Comfort and Stability

The TriRig Closed Back Carbon Arm Cups are renowned for aero comfort, providing the ultimate combination of support, stability, and performance. With a length of over 200mm and substantial arm wrap, these arm cups offer more surface area than any other production arm cups on the market. Built from durable, lightweight carbon, the Closed Back Carbon Arm Cups deliver exceptional strength while maintaining an incredibly low weight.

Designed for triathletes and time-trial cyclists, the Closed Back Scoops provide additional support at the back, wrapping behind the elbow—making them ideal for high-hand or upward-tilt aero positions. This unique design keeps you locked into your aero position while allowing your upper body to relax, enhancing both comfort and efficiency during long rides.

Each set of Closed Back Carbon Arm Cups comes with our signature textured neoprene pads, offering the perfect balance of grip and cushion, ensuring you stay comfortable and stable even during the most demanding rides.

Closed Back Carbon Arm Cups represent one of the most significant comfort upgrades you can make to your triathlon or TT bike. The added comfort allows you to stay in the aero position longer, resulting in faster times and improved performance. 

For enhanced cockpit flexibility, consider adding Wingspan Extenders to your cart. Need hardware for Speed Concept compatibility? Add it to your cart for seamless integration.

TriRig designs innovative, aerodynamic products built with elite athletes and proven through real-world performance. With a relentless focus on progress, problem-solving, and minimal design, every product helps athletes push limits and achieve their personal best.

• At 418g 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 One/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. Other Scoops variants are compatible with the appropriate hardware kit.
• 🔧 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.