Precision Fit. Maximum Stability. The TriRig Scoops Ultimate EVO Open Back Arm Cups are built for aerodynamic efficiency, comfort, and control. Made from ultra-light carbon fiber, they feature an open-back design that provides a secure, stable platform for long rides and aggressive aero positions. Come with hand position extensions. Product Highlights: More Hole Spacing: Greater adjustability for a custom fit. New Cable Routing Channel: Cleaner, more efficient cable management. Higher Sides: Improved aerodynamics and forearm stability. Open and Closed Versions: Choose the design that fits your style and needs. Open Back Optimized for Women & Shorter Forearms: Better comfort and reach. Enhanced Hand Position Adjustability: Fine-tune your aero setup for performance. The EVO Open Back provides unmatched comfort and control - delivering the perfect upgrade for athletes chasing speed, stability, and aerodynamic precision. Key Features Unlimited Reach: Simply cut and install for a perfect fit. Weighs just 892 grams, providing an optimal balance of strength and minimal weight. Fully Integrated Design: Includes wire housing ports for a sleek, seamless finish. Universal Compatibility: Designed with a bolt pattern to fit most aerobars on the market. Open-Back Scoops Ultimate EVO Dimensions Length: 269 mm Width (internal): 95 mm Depth: 76 mm Side Wall Height: 36 mm Weight: 805 g per pair Horizontal Mounting Hole Spacing: 15.5 mm Vertical Mounting Hole Spacing: 20 mm Compatibility Compatible with most aerobars and setups, with a universal bolt pattern for easy installation. Includes pre-cut alloy extensions, ready for immediate use.