E-flite 5x2.75 Electric Propeller for UMX Beast Sbach 342 Timber E-EFLUP050275

• Product Type: Electric Propeller
• Diameter: 5 inches (127mm)
• Pitch: 2.75 inches (69mm)
• Hub Inner Diameter: 0.157 inches (4mm)
• Number of Blades: 2
• Material: Black Composite
• Compatible Aircraft: E-flite UMX Beast, E-flite Sbach 342, E-flite UMX Timber, E-flite EFLU1180, E-flite EFLU3950, E-flite EFLU4080, E-flite EFLU4180, E-flite EFLU4850, E-flite EFLU4950, HobbyZone HBZ5400, HobbyZone HBZ5480
• Manufacturer: E-flite (Horizon Hobby)
• Model Number: E-EFLUP050275

Overview

The E-flite 5x2.75 Electric Propeller (model E-EFLUP050275) is an essential replacement spare for ultra-micro electric RC aircraft enthusiasts across the UK. Whether you fly the UMX Beast, Sbach 342, or UMX Timber, this genuine 2-blade propeller is engineered to deliver reliable performance and keep your micro flyer ready for action. As a dedicated RC hobbyist, you know that propellers take a battering during training flights, crashes and outdoor adventures—having quality replacement props on hand is simply part of responsible RC ownership. This black composite propeller represents the genuine E-flite engineering standard and is the perfect choice for anyone serious about maintaining their ultra-micro aircraft in peak condition.

Ultra-micro electric RC aircraft represent a rapidly growing segment of the RC hobby, offering enthusiasts the chance to fly high-performance aerobatic models in spaces where larger RC planes simply cannot operate. The compact size, impressive agility and ease of transport make UMX aircraft perfect for park flying, indoor venues, and weekend adventures. However, the delicate nature of these props means that replacement parts are not optional—they are essential consumables for any pilot. The E-flite 5x2.75 propeller has been specifically designed and tested with multiple UMX platforms to ensure perfect fit, optimal balance, and consistent flight characteristics every single time you take to the air.

If you are new to the RC hobby in the UK and have just purchased your first UMX Beast or are upgrading from a basic trainer to the aerobatic Sbach 342, understanding the importance of genuine spare parts cannot be overstated. Counterfeit or inferior propellers can cause vibration, reduce efficiency, damage your motor bearings and ultimately compromise your flying experience. Choosing the authentic E-flite 5x2.75 propeller from a trusted UK RC retailer ensures you receive a product that meets the original manufacturer's specifications and will perform exactly as intended.

Key Features

• Genuine 2-Blade Design — This propeller features a standard 2-blade configuration that has been optimised through testing with UMX aircraft to deliver smooth, efficient flight with minimal vibration. The two-blade design provides excellent balance characteristics essential for maintaining stable hover and precise aerobatic manoeuvres.
• 5 Inch Diameter with 2.75 Inch Pitch — The specific 5x2.75 dimensions have been carefully chosen to match the motor and airframe specifications of ultra-micro electric aircraft, ensuring optimal thrust delivery, efficient power conversion, and appropriate rotation speeds for safe, controllable flight characteristics.
• Black Composite Construction — Rather than using fragile wood or flimsy plastic, E-flite engineers have selected a durable black composite material that provides excellent strength-to-weight ratio, resists moisture absorption, and maintains structural integrity through repeated flight cycles and crash recoveries.
• 4mm Hub Bore — The 0.157 inch (4mm) inner diameter hole is precision-engineered to fit the standard motor shafts fitted to compatible UMX aircraft, ensuring secure mounting without wobble, play or slippage during high-speed rotation.
• Multiple Aircraft Compatibility — This single propeller model is compatible with numerous ultra-micro platforms including the UMX Beast, Sbach 342, UMX Timber, and a range of HobbyZone and E-flite models, making it an incredibly versatile spare to keep in your flying bag.
• Ready-to-Fit Spare Part — Unlike propellers that require modification, balancing, or testing, this E-flite genuine part can be removed from the box and fitted directly to your aircraft, ready to fly within minutes—perfect for field replacements when accidents happen.

Technical Performance

The E-flite 5x2.75 Electric Propeller represents the culmination of years of ultra-micro aircraft development and real-world testing by pilots across the globe. The 127mm diameter and 69mm pitch dimensions have been precisely calculated to work in harmony with the brushless electric motors found in contemporary UMX aircraft. These ultra-micro motors, typically in the 8-10mm can size range, operate at relatively high RPM to generate sufficient thrust for the lightweight airframes, and this propeller's pitch is optimised to extract maximum efficiency at those rotation speeds without causing excessive current draw that would deplete your battery prematurely. The black composite material selection demonstrates E-flite's commitment to practical engineering—composites resist the water absorption that plagues wooden props in humid British climates, they absorb impact energy during inevitable crashes rather than shattering into splinters, and they maintain their dimensional stability through temperature variations experienced during indoor and outdoor flying. The 4mm hub bore is manufactured to tight tolerances, ensuring that when you slide the prop onto your motor shaft, it sits perfectly centred without runout or wobble. This precision is absolutely critical because any imbalance in propeller rotation translates directly into vibration, which damages motor bearings, degrades flight stability, and reduces the overall lifespan of your aircraft's mechanical components. The composite construction also means this propeller won't delaminate like cheaper alternatives, won't splinter when it strikes obstacles during landing mishaps, and maintains its aerodynamic profile throughout its service life.

What's in the Box

• 1x E-flite 5x2.75 Electric Propeller with 4mm hub bore

Compatible Aircraft Models

• E-flite UMX Beast
• E-flite Sbach 342
• E-flite UMX Timber
• E-flite EFLU1180
• E-flite EFLU3950
• E-flite EFLU4080
• E-flite EFLU4180
• E-flite EFLU4850
• E-flite EFLU4950
• HobbyZone HBZ5400
• HobbyZone HBZ5480

Frequently Asked Questions

• Is the E-flite 5x2.75 propeller suitable for beginners learning to fly ultra-micro aircraft? — Absolutely. This is the genuine factory replacement propeller fitted to UMX aircraft when they are first manufactured. If you are just starting your RC flying journey with a UMX Beast or similar model, having a spare E-flite 5x2.75 propeller available is one of the smartest purchases you can make. Beginners inevitably experience crashes as part of the learning process, and having an immediate replacement ready means you can swap out a damaged prop in seconds and continue flying rather than waiting days for parts to arrive from online retailers.
• What battery does the UMX Beast or Sbach 342 require, and is this propeller compatible with all battery types? — While this propeller itself is battery-agnostic (it simply responds to the motor rotation), the aircraft it powers typically use small LiPo packs in the 1S, 2S or 3S voltage ranges depending on the specific model. The E-flite 5x2.75 propeller is compatible with all battery types used in UMX aircraft—the propeller will operate efficiently with whatever battery your aircraft manufacturer specifies for your particular model.
• How often should I expect to replace my propeller? — This depends entirely on your flying style and how frequently you crash. Careful pilots who focus on smooth flying and gentle landings might use the same propeller for dozens of flights before needing replacement. Pilots who are learning aerobatics or flying in challenging conditions should expect to replace props more frequently—perhaps after every few flights or after any noticeable impact. Having multiple spares ensures you never have to abandon your flying day due to propeller damage.
• What is the difference between genuine E-flite propellers and cheap Chinese alternatives I see online? — Genuine E-flite propellers are manufactured under strict quality control standards, use superior composite materials that resist moisture and temperature degradation, maintain precise dimensional tolerances that ensure perfect balance, and are designed specifically through extensive testing with E-flite aircraft. Cheap alternatives often use inferior plastics that become brittle in cold weather, are manufactured without quality control standards resulting in imbalance, absorb moisture which degrades performance, and may not fit securely on your motor shaft. The difference in price between genuine and counterfeit props is minimal (typically just a pound or two), making it simply not worth the risk to your aircraft and flying experience.
• Can I use this propeller on aircraft other than those listed in the compatibility section? — The listed compatible models represent the aircraft that E-flite has specifically tested and approved for this propeller. Other aircraft with 4mm motor shafts and similar operating specifications might technically fit, but we recommend sticking to the listed models to ensure optimal performance and safety. If you have a different aircraft model and want to confirm compatibility, contact our team for expert advice.
• How should I store my spare propellers to keep them in perfect condition? — Store propellers in a cool, dry environment away from direct sunlight. A small plastic box or bag is ideal for preventing dust accumulation. Avoid storing props in damp environments like sheds or garages without climate control, as moisture absorption can slightly warp composite propellers. Keep them away from extreme heat sources which might soften the composite material.

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 E-flite 5x2.75 Electric Propeller 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.

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