RC Overhaul Servo Horn Black Aluminium 25T TRX-4M Adjustable G-RCO-TRX009

• Manufacturer: RC Overhaul
• Part Number: G-RCO-TRX009
• EAN Barcode: 5055320229612
• Product Type: Servo Horn
• Horn Design: 3-position adjustable
• Material: Aluminium
• Tooth Count: 25T
• Finish: Anodised black with precision milled silver edges
• Servo Fixing Screw: Countersunk design for flush mounting
• Steering Link Screw: 2.5mm
• Compatible Vehicles: Traxxas TRX-4M Ford Bronco 1/18 RTR 4x4 Trail Truck (black, white, Area 51, blue, red, orange variants), Traxxas TRX-4M Land Rover Defender 1/18 RTR 4x4 Trail Truck (tan, black, silver, green, light blue, pink variants), Traxxas TRX-4M Chevrolet K10 High Trail Truck 1/18 (red, black, blue variants), Traxxas TRX-4M Ford F-150 High Trail Truck 1/18 (blue, black, brown variants), Traxxas TRX-4MT F150 Monster Truck (blue, black variants), Traxxas TRX-4MT K10 Monster Truck (black, red variants)
• Installation Requirement: Thread lock recommended for 2.5mm steering link screw

Overview

The RC Overhaul Servo Horn Black Alum 25T TRX-4M is a precision-engineered upgrade component designed for enthusiasts and competitors using Traxxas TRX-4M scale RC crawlers and trail trucks. Whether you're running a Ford Bronco, Land Rover Defender, Chevrolet K10, Ford F-150, or any compatible TRX-4M platform, this aluminium servo horn offers a critical tuning solution that allows you to fine-tune your steering response with precision. For UK RC car enthusiasts looking to dial in their setup, this component represents a significant upgrade over standard plastic alternatives, delivering both durability and refined aesthetics that showcase the attention to detail expected from serious RC hobbyists.

Manufactured by RC Overhaul, a recognised name in quality RC upgrades, this servo horn combines performance engineering with visual refinement. The 3-position design gives you the flexibility to adjust servo throw to match your driving style and terrain conditions, making it an essential tuning tool for anyone serious about trail performance. Whether you're navigating rocky terrain on a weekend bash or fine-tuning your setup for competitive trail events across the UK, this aluminium horn delivers the adjustability you need without compromise on build quality or longevity.

Unlike basic plastic alternatives that can wear, flex, or strip under load, the aluminium construction ensures reliable performance session after session. The anodised black finish with precision milling creates a striking appearance with perfectly defined silver edges, transforming your servo installation from utilitarian to professional-grade. This is the kind of upgrade that catches the eye of experienced RC competitors who understand that quality components contribute to both performance and reliability.

Key Features

• 3-Position Adjustable Design — The servo horn offers three distinct position points, allowing you to control the amount of steering throw from your servo with precision. This means you can match your steering response to different terrain types, weather conditions, and driving styles without swapping components, making it invaluable for UK trail drivers who face varied conditions.
• Anodised Black Aluminium Construction — Manufactured from high-quality aluminium and finished with anodising, this horn resists corrosion and wear far better than plastic alternatives. The anodising process creates a durable protective layer that maintains its appearance even after extensive use in muddy trail conditions or wet UK weather.
• Precision Milling with Silver Edge Detail — The manufacturing process includes precision milling that creates sharp, defined silver edges against the black anodised surface. This isn't just cosmetic—it demonstrates the engineering precision that went into this component and signals to other RC enthusiasts that you've invested in quality upgrades.
• Countersunk Servo Fixing Screw — The servo attachment screw is countersunk, meaning it sits flush with the surface rather than protruding. This creates a clean, professional flat finish to your servo installation and prevents the screw head from catching on surroundings or interfering with other components during rough trail work.
• 2.5mm Steering Link Compatibility — The horn accepts standard 2.5mm steering link screws, maintaining compatibility with typical TRX-4M configurations. RC Overhaul recommends applying thread lock to this screw to maintain secure positioning during aggressive driving, ensuring your steering geometry remains consistent throughout your session.
• Universal TRX-4M Compatibility — This servo horn is engineered to fit all Traxxas TRX-4M models, including the Ford Bronco (available in black, white, Area 51, blue, red, and orange variants), Land Rover Defender (tan, black, silver, green, light blue, and pink variants), Chevrolet K10 High Trail Truck (red, black, and blue variants), Ford F-150 High Trail Truck (blue, black, and brown variants), and both F150 and K10 TRX-4MT Monster Truck versions (available in multiple colours).
• Professional Installation Finish — When properly installed with thread lock applied to the steering link screw, this horn delivers a finished look that elevates your entire RC setup. The combination of black anodising, silver edge detailing, and flush-mounted hardware creates an appearance consistent with competition-grade RC builds.

Technical Performance

The servo horn represents a fundamental upgrade in steering precision and durability for TRX-4M owners. Constructed from aluminium rather than plastic, this component withstands the constant mechanical stress of trail driving, rock crawling, and competitive steering inputs without flexing, bending, or developing play over time. The 25-tooth specification (25T) matches the servo specifications used in TRX-4M platforms and ensures proper meshing with your servo's internal spline, delivering predictable, responsive steering input translation. The three position holes allow you to adjust your servo throw from minimal (tight, responsive steering) to maximum (wider steering range), providing the tuning flexibility required to adapt your RC crawler to different trail conditions, wheel sizes, and driving preferences. The anodising process creates a hard, protective surface that resists corrosion from moisture, mud, and salt residue, making it ideal for UK driving conditions where damp weather is common. The countersunk servo fixing screw design eliminates any proud hardware that could catch on obstacles, while the 2.5mm steering link connection point maintains full compatibility with standard TRX-4M linkage systems. Installation requires only basic tools and takes just minutes, making it an accessible upgrade even for hobbyists new to RC component tuning. The precision milling evident in the silver edge detailing indicates manufacturing tolerances tight enough to ensure smooth operation and consistent steering feel without any binding or irregularity.

What's in the Box

• RC Overhaul Servo Horn Black Alum 25T TRX-4M (G-RCO-TRX009)

What You Need to Complete

• Thread lock compound for the 2.5mm steering link screw (thread lock is essential to prevent the screw from loosening during trail use)
• Basic screwdriver or hex tool to install the servo horn onto your existing servo and connect the steering linkage

Frequently Asked Questions

• Will this servo horn improve my TRX-4M's steering response? — Yes, by allowing you to adjust the servo throw across three positions, you can fine-tune your steering response to match your setup and driving style. Reducing throw creates tighter, more responsive steering ideal for technical terrain, while increasing throw provides wider steering range for looser, faster driving. This tuning capability helps you dial in the perfect steering geometry for your specific conditions, which is why it's favoured by UK trail competitors.
• Is this servo horn better than the plastic alternative? — Significantly. Aluminium is considerably more durable than plastic and resists wear, flexing, and failure under the repeated mechanical stress of trail driving. The anodised finish provides corrosion resistance essential in the UK's damp climate, and the precision engineering ensures consistent steering feel session after session. The visual upgrade is also substantial—this looks like a competition-grade component because it is one.
• What does 25T mean? — The 25T specification refers to the number of spline teeth on the servo horn. This matches the servo spline specification used in TRX-4M vehicles, ensuring proper fitment and power transmission from your servo to the steering linkage. Using the correct tooth count is essential for reliable operation.
• Do I need to use thread lock? — RC Overhaul specifically recommends applying thread lock to the 2.5mm steering link screw. During trail driving, vibration and repeated steering inputs can gradually loosen fasteners. Thread lock prevents this loosening, ensuring your steering geometry remains consistent and your horn remains securely attached to the linkage. This is especially important for competitive drivers or those who undertake regular trail sessions.
• Will this fit my specific TRX-4M model? — This servo horn is compatible with all Traxxas TRX-4M variants, including Ford Bronco, Land Rover Defender, Chevrolet K10 High Trail Truck, Ford F-150 High Trail Truck, and both F150 and K10 TRX-4MT Monster Truck models regardless of their colour variant. Check your vehicle's documentation to confirm it's a genuine TRX-4M platform, and this horn will fit correctly.
• How do I install this servo horn? — Installation involves removing your existing plastic servo horn, sliding the new aluminium horn onto your servo's spline, securing it with the countersunk fixing screw, then connecting your steering linkage to one of the three position holes and applying thread lock to the 2.5mm steering link screw. The entire process typically takes under five minutes with basic tools.
• Can I adjust the servo throw after installation? — Yes, this is one of the primary advantages of the 3-position design. Once installed, you can experiment with different position holes to fine-tune your steering response. If you find the steering is too tight, you can move your linkage to the next position hole to increase throw. Conversely, if steering feels too sensitive, you can reduce throw. Simply reposition your linkage and you've transformed your steering characteristics.
• Is the black finish durable in wet conditions? — The anodised black finish is specifically engineered for durability in challenging conditions. Anodising creates a hard, protective oxide layer that resists corrosion from moisture, mud, and salt residue common in UK trail driving. Your servo horn will maintain its appearance and performance even after extended use in damp or muddy environments.

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 RCO Servo Horn Black Alum 25t TRX-4M G-RCO-TRX009 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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