Overview
The Traxxas Bumper, Chassis, Front (upper & lower) TRX9420 is an essential upgrade component designed specifically for the TRX-4 Sport trail crawler. This replacement bumper assembly combines both upper and lower chassis-mounted bumper elements, delivering the protection and performance enhancements that serious RC enthusiasts demand from their off-road rigs. Whether you're tackling rocky terrain, navigating through challenging trail obstacles, or simply upgrading a worn component, this genuine Traxxas part ensures your TRX-4 Sport maintains its trail-conquering capability and distinctive aesthetic appeal.
As part of the TRX-4 Sport platform, one of the most awarded and recognisable trail crawlers in the ready to run RC car UK market, this bumper assembly plays a critical role in approach and departure angles—two of the most important performance metrics for serious crawlers and competitive off-roaders. The front bumper design has been engineered to work seamlessly with the TRX-4 Sport's chassis geometry, allowing you to optimise clearance and obstacle navigation without compromising structural integrity. For UK RC enthusiasts who demand genuine OEM parts backed by Traxxas engineering, this front bumper assembly represents the ideal choice for replacement or performance modification.
This product is particularly popular among competitors and weekend bashers who recognise that maintaining and upgrading their TRX-4 Sport with genuine Traxxas components ensures reliability, compatibility, and performance consistency. The front bumper assembly is straightforward to install using basic hand tools, making it accessible to both experienced builders and those new to RC modification and maintenance.
Key Features
- Front Upper & Lower Bumper Design — The assembly includes both upper and lower bumper elements, providing comprehensive front-end protection against impacts, obstacles, and terrain contact while maintaining the vehicle's approach angle for optimal trail performance.
- Genuine Traxxas Engineering — Manufactured to OEM specifications, this bumper assembly is engineered and tested by Traxxas to work perfectly with your TRX-4 Sport, ensuring perfect fitment and reliability on the trail.
- Easy Installation — The bumper mounts utilise simple screw-pin fasteners and button-head screws, allowing you to remove, replace, or modify the bumper in just minutes using basic hand tools—no specialised equipment required.
- Flippable Mount Design — The integrated mount system is designed to be reversible, allowing experienced builders to flip the mount for raising the front bumper by approximately 11 millimetres (just under half an inch), unlocking an easy performance mod that improves approach angle and obstacle clearance.
- Performance Modification Compatible — The front bumper assembly integrates seamlessly with other popular TRX-4 Sport performance modifications, including raised rock sliders, body trimming, and weight distribution optimisations recommended by Traxxas engineers for competition-grade crawler setups.
- Trail-Proven Design — As part of the award-winning TRX-4 Sport platform, the front bumper has been proven through countless hours of competitive crawling, weekend adventures, and rigorous testing, making it a reliable choice for serious off-roaders across the UK and beyond.
Technical Performance
The TRX-4 Sport front bumper assembly represents decades of Traxxas crawler design expertise, engineered to maximise approach angle whilst providing robust protection against rock strikes, tree roots, and terrain obstacles. The upper and lower bumper elements work together to create a protective frame around the front end of your chassis, with mounting points strategically positioned to maintain the vehicle's weight distribution and handling characteristics. The assembly uses the same proven fastening systems found throughout the TRX-4 platform—specifically 3x10 millimetre button-head screws for secure chassis mounting and screw-pin fasteners for quick bumper installation and removal. The mount's reversible design means you can flip it to achieve an 11 millimetre lift in the front bumper position, a modification that costs nothing but a few minutes of wrenching time and provides measurable improvements in approach angle without raising the vehicle's centre of gravity significantly. The bumper assembly is compatible with standard TRX-4 Sport body panels, though Traxxas engineers recommend body trimming when raising the bumper to maintain clearance and prevent binding during extreme articulation. The material composition ensures durability through extended crawling sessions whilst maintaining the lightweight characteristics essential for trail performance. This front bumper assembly works in harmony with the TRX-4 Sport's sophisticated suspension geometry, articulation-friendly design, and weight distribution systems that together create one of the most capable and forgiving trail crawlers available to UK RC enthusiasts.
What's in the Box
- Front upper and lower bumper assembly
- Integrated bumper mount with reversible design
- Fastening hardware including 3x10 millimetre button-head screws and screw pins
Frequently Asked Questions
- Can I raise my TRX-4 Sport's front bumper for better approach angle? — Yes, absolutely. The mount integrated with this bumper assembly is designed to flip, providing an 11 millimetre lift to the front bumper in the raised position. To perform this modification, simply remove the screw pins that secure the bumper, pull the bumper out of its mount, remove the 3x10 millimetre button-head screws securing the mount to the chassis rails, flip the mount over, and reinstall everything in reverse. This simple two-minute modification costs nothing but provides noticeable improvements in approach angle and obstacle clearance for trail crawling.
- Will I need to trim my TRX-4 Sport body after raising the bumper? — The TRX-4 Sport body will clear the raised front bumper without modification, though Traxxas recommends trimming the area below the grille to create maximum approach angle. You can use a body reamer to create holes at contact points, then use body scissors to cut straight lines connecting the holes, creating slots that allow the body to sit at the desired ride height without binding on the bumper.
- Is this a genuine Traxxas part? — Yes, the TRX9420 is a genuine Traxxas OEM component, manufactured to exact specifications and guaranteed to fit and function perfectly with your TRX-4 Sport. Purchasing genuine Traxxas parts ensures compatibility, performance, and reliability for your RC crawler.
- What tools do I need to install this bumper? — Installation requires only basic hand tools: a 2 millimetre wrench or hex key for the screw pins and a tool to fit the 3x10 millimetre button-head screws. Most RC enthusiasts will have these in their toolbox already, making installation straightforward and quick.
- Can I use this bumper for body-up building or do I need an assembled TRX-4 Sport? — This bumper assembly is designed specifically for the TRX-4 Sport platform and requires a TRX-4 Sport chassis. It integrates with the chassis rail mounting points and works with the TRX-4 Sport's body panels and clearance specifications.
- What's the difference between the front and rear bumper kits for TRX-4 Sport? — The front bumper provides an 11 millimetre lift when the mount is flipped, whilst the rear bumper provides a more significant 26 millimetre boost (just over an inch). Both use the same flippable mount principle but are designed to different specifications based on the vehicle's geometry at each end. Additionally, you can purchase extra front bumper mounts (8237 TRX-4 bumper mount set) and use them in the rear position for less dramatic lifting if desired.
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 Traxxas Bumper, Chassis, Front (upper & lower) TRX9420 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.
- Model Number: TRX9420
- Brand: Traxxas
- Product Type: Front Bumper Assembly (upper and lower) for TRX-4 Sport
- Compatibility: TRX-4 Sport trail crawler
- Mount Design: Reversible/flippable mount system
- Front Bumper Lift (raised position): 11 millimetres (approximately 0.43 inches)
- Mounting Hardware: 3x10 millimetre button-head screws
- Fastening Hardware: Screw pins for bumper attachment
- Installation Tools Required: 2 millimetre wrench or hex key
- Installation Time: Approximately 2 minutes
- Features: Approach angle optimisation, reversible mount for easy height adjustment, integrated upper and lower bumper elements
- Compatible Modifications: Rock slider raising, body panel trimming, weight distribution optimisation
- Included Components: Front upper bumper element, front lower bumper element, reversible mounting bracket, fastening hardware
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
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