Overview
The Losi 42T Ring and 12T Pinion Gear set (Z-LOS232019) is an essential drivetrain spare part designed for Losi Baja Rey and Rock Rey RC vehicles. Whether you're a dedicated RC enthusiast running your off-road buggy regularly or a weekend basher pushing your machine to its limits, having quality replacement gears on hand ensures your RC car UK setup remains in peak condition. This genuine Losi spare part is engineered to maintain the performance and reliability your vehicle demands, making it an indispensable addition to any RC model spares collection.
Drivetrain components like ring and pinion gears are critical to the performance of any RC vehicle, transferring power from the motor to the wheels with precision and efficiency. The 42T ring gear paired with the 12T pinion gear creates a specific gear ratio that influences your vehicle's acceleration, top speed, and overall handling characteristics. For RC enthusiasts in the UK looking to optimise their ready to run RC or competition-grade machine, having access to genuine OEM parts ensures compatibility and reliability every time you take your Baja Rey or Rock Rey to the track or the bash spot.
This is a genuine Losi component manufactured to the exacting standards you'd expect from one of the industry's most respected RC brands. Replacement gears become necessary through normal wear and tear, or when tuning your vehicle's performance to suit different racing conditions or driving styles. By choosing authentic Losi spares, you're investing in longevity and consistent performance for your RC model.
Key Features
- Genuine Losi OEM Component — This is an authorised Losi spare part engineered specifically for Baja Rey and Rock Rey models, ensuring perfect fit, compatibility and long-term reliability without compromise or risk of fitment issues.
- 42T Ring Gear — The larger ring gear component provides the main driven element of your drivetrain, working in conjunction with the pinion gear to deliver smooth power transfer and precise gear mesh for optimal performance.
- 12T Pinion Gear — The smaller pinion gear is the motor-driven element that meshes with the ring gear, and this 12-tooth configuration directly influences your vehicle's acceleration and top speed characteristics.
- Drivetrain Spares Category — Classified as drivetrain spares, these gears are essential wear items that maintain the efficiency of your RC car's power delivery system, ensuring consistent performance lap after lap.
- Direct Compatibility — Specifically engineered for Losi Baja Rey (BR) and Rock Rey (RR) models, guaranteeing hassle-free installation without modification or fitment concerns.
Technical Performance
The ring and pinion gear set is the heart of any RC vehicle's transmission system, responsible for converting the rotational force from your brushless motor into wheel-turning torque. The 42T ring gear paired with a 12T pinion creates a 3.5:1 gear ratio, a configuration that Losi engineers have optimised for the Baja Rey and Rock Rey platforms to deliver responsive acceleration and controlled top-end speed suitable for both competitive racing and recreational bashing. These gears are manufactured from hardened materials designed to withstand the stresses of high-performance RC driving, whether you're pushing your machine across rocky terrain in the UK countryside or competing in organised races. Proper gear mesh is critical to drivetrain efficiency, and genuine Losi components ensure that tooth engagement is precise, minimising power loss and heat generation. The quality of gear manufacturing directly impacts the longevity of your entire drivetrain system, including the motor, transmission case, and differential components. Regular inspection and timely replacement of worn gears is essential maintenance for any serious RC enthusiast, and having genuine parts available ensures your vehicle remains in competition-ready condition. Whether you're running a stock setup or a tuned electric RC buggy, these gears are engineered to deliver the reliability and performance Losi vehicles are renowned for.
What's in the Box
- 42T Ring Gear
- 12T Pinion Gear
Frequently Asked Questions
- What is the gear ratio of the 42T ring and 12T pinion combination? — The gear ratio is calculated by dividing the ring gear teeth by the pinion gear teeth: 42 ÷ 12 = 3.5:1. This ratio influences how quickly your motor's rotations translate to wheel speed, affecting both acceleration response and top speed capabilities of your Losi Baja Rey or Rock Rey.
- When should I replace my ring and pinion gears? — Ring and pinion gears should be inspected regularly for wear, chipping, or damaged teeth. Replace them immediately if you notice grinding sounds, loss of acceleration, or visible damage to the tooth profiles, as worn gears can damage other drivetrain components and reduce performance.
- Are these gears compatible with my RC car? — Yes, these gears are specifically engineered for Losi Baja Rey and Rock Rey models (Z-LOS232019). Before purchasing, confirm your vehicle matches one of these two platforms to ensure perfect compatibility and proper fitment without modification.
- Do I need any special tools to install these gears? — Ring and pinion gear installation typically requires access to your transmission case and may involve adjusting gear mesh settings. We recommend consulting your vehicle's instruction manual or seeking advice from experienced RC technicians to ensure proper installation and optimal performance.
- What is the difference between OEM gears and aftermarket alternatives? — Genuine Losi OEM gears like the Z-LOS232019 are engineered to exact specifications matching your vehicle's original components, ensuring perfect mesh, durability, and performance. Aftermarket alternatives may vary in quality, material composition, and tooth profile accuracy, potentially affecting reliability and longevity.
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 LOS 42T Ring and 12T Pinion Gear: Baja Rey, Rock Rey Z-LOS232019 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.
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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