UDI RC U98PRO Rear B-Arm Assembly Quadcopter Spare Part UDI-U98PRO-11

Overview

The UDI RC U98PRO Rear B-Arm Assembly (UDI-U98PRO-11) is an essential replacement and upgrade component for the UDI U98PRO mini drone platform. This precision-engineered rear arm assembly is designed to restore or enhance your drone's structural integrity and flight performance. Whether you're a recreational flyer looking to maintain your investment or an experienced RC enthusiast building a backup rig, this genuine UDI RC spare part ensures your aircraft operates at peak efficiency. As a dedicated spare part for one of UDI RC's most popular compact aerial platforms, it represents quality engineering and reliability that serious drone pilots have come to expect from the brand.

UDI RC specialises in manufacturing high-performance RC vehicles across multiple platforms, from drones to fast-moving ground-based models. The U98PRO mini drone has established itself as a popular choice amongst UK RC enthusiasts and casual flyers alike, offering a lightweight 249g platform with advanced features including 4K camera capability, GPS positioning, and sophisticated electronic stabilisation systems. When components require replacement due to wear, damage from crashes, or when building multiple configurations, genuine spare parts are crucial to maintaining flight safety and optimal aerial performance.

This rear B-arm assembly is manufactured to exacting standards using durable materials selected specifically for the structural demands placed on drone arms during flight, landing, and recovery operations. By choosing genuine UDI RC spares, you ensure compatibility with your existing U98PRO airframe and maintain the performance characteristics that made the drone platform popular. Whether you're replacing a damaged component following a rough landing or building a secondary aircraft for extended flying sessions, this assembly integrates seamlessly with your existing equipment.

Key Features

• Genuine UDI RC Manufacturing — This is an authentic OEM (original equipment manufacturer) spare part produced by UDI RC to the same exacting standards as your original equipment, ensuring perfect compatibility and reliability with your U98PRO mini drone platform.
• Rear B-Arm Configuration — Specifically engineered as a rear arm assembly, this component is essential for maintaining the structural integrity and aerodynamic balance of your aircraft during flight operations.
• Precision Engineering — The arm is manufactured with tight tolerances to ensure smooth motor operation, precise thrust alignment, and balanced flight characteristics across all flight modes and conditions.
• Durable Construction — Built using high-strength materials selected to withstand the rigours of repeated landings, minor impacts, and the stresses of sustained flight operations typical of RC flying in the UK.
• Direct Compatibility — Designed specifically for the U98PRO platform, this rear arm assembly integrates seamlessly with your existing aircraft without requiring modifications or additional hardware purchases.
• Cost-Effective Maintenance — By replacing only the damaged component rather than the entire aircraft, you can restore your drone to full operational capability at a fraction of the replacement cost.
• Brushless Motor Integration — The U98PRO platform utilises brushless motor technology, and this rear arm assembly is engineered specifically to support and protect the brushless motor mounted at its terminus.

Technical Performance

The UDI U98PRO represents a sophisticated mini drone platform that combines portability with advanced flight performance characteristics. This rear B-arm assembly is engineered as part of a quadcopter configuration, meaning it serves as one of four identical or mirrored arm structures that work in concert to provide multi-directional thrust and precise attitude control. The arm itself must maintain structural rigidity whilst remaining light enough not to compromise the overall aircraft's weight and flight duration. The U98PRO platform is powered by brushless motors mounted at the end of each arm, with the rear arms including dedicated motor attachments that allow smooth, vibration-free operation across the entire throttle range. The assembly integrates with the central fuselage and is designed to work in harmony with the drone's 3-axis gimbal system, which relies on balanced weight distribution and symmetrical arm geometry for stable platform flight and smooth video capture. At 249g total platform weight, every gram of the airframe contributes to flight performance, endurance, and manoeuvrability. The rear arms specifically must support the concentrated weight of the brushless motors and propellers, whilst maintaining the precise geometry required for the flight controller's stabilisation systems to function correctly. UDI RC's engineering ensures that this rear arm assembly maintains perfect alignment with the fuselage, creating the symmetrical geometry that allows the sophisticated electronic stabilisation and GPS systems to deliver the platform's renowned reliability and ease of control.

What's in the Box

• 1 x UDI RC U98PRO Rear B-Arm Assembly (UDI-U98PRO-11)

What You Need to Complete

• Complete U98PRO drone airframe for installation (or alternative compatible airframe)
• Appropriate tools for component installation (typically included with main aircraft or separately available)
• Brushless motor unit compatible with U98PRO specifications (if replacing arm with failed motor)
• Propeller assembly matching U98PRO specifications for rear arm mounting

Frequently Asked Questions

• Is this rear arm assembly compatible with my U98PRO mini drone? — Yes, this is a genuine OEM rear B-arm assembly manufactured by UDI RC specifically for the U98PRO platform. It is designed for direct compatibility with all versions of the U98PRO mini drone and will integrate seamlessly with your existing airframe without requiring modifications or additional components.
• What should I do if my drone's rear arm is damaged? — If your U98PRO has suffered damage to the rear arm structure, you have two options: attempt repair using epoxy adhesive or replacement hardware, or install this genuine spare rear arm assembly. Genuine OEM parts are recommended for safety-critical components like arms, as they maintain the precise geometry required for safe flight operations and proper flight controller calibration.
• Can I install this rear arm myself? — Installation typically involves detaching the damaged rear arm from the fuselage and securing the replacement assembly in its place. The process is generally straightforward for users with basic RC experience, though you may wish to consult your U98PRO manual for specific installation guidance and torque specifications for securing bolts.
• What makes this different from generic third-party rear arm replacements? — Genuine UDI RC OEM spare parts are manufactured to the exact specifications used in original aircraft production, ensuring perfect dimensional accuracy and material properties. This precision engineering is critical for drone arms, as even small variations in geometry can affect flight balance, stability, and the ability of the flight controller's gyroscopic stabilisation systems to function correctly.
• How long will a replacement rear arm last before requiring maintenance? — With proper care and normal recreational flying, a genuine UDI RC rear arm assembly should provide years of reliable service. Lifespan depends primarily on flying frequency, landing technique, and environmental conditions. Regular inspection for cracks or stress marks is recommended, particularly after hard landings or crashes.
• Is this rear arm waterproof? — Whilst the arm itself is durable plastic construction, the brushless motor and electronic components mounted on the rear arm assembly are not waterproof and should not be exposed to water or heavy rain. The U98PRO platform is suitable for dry outdoor flying conditions but should not be operated in wet weather or over water.
• Does this assembly include the motor and propeller? — No, this is the structural rear arm assembly only. The brushless motor and propeller are separate components. If your motor or propeller is damaged, you will need to source those items separately from genuine UDI RC spare parts or authorised retailers.

Why Buy from RC Model Shop?

RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the UDI RC U98PRO REAR B-ARM ASSEMBLY UDI-U98PRO-11 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.