FTX Stinger 42T Main Diff Crown Gear Pair for 1/10 RC Car FTX10522

Overview

The FTX Stinger 42T Main Diff Crown Gear (2pc) is an essential replacement drivetrain component designed specifically for FTX Stinger and FTX EVO30 1/10 scale on-road street RC cars. This precision-engineered spare part is perfect for RC enthusiasts in the UK who demand reliable performance and authentic OEM parts for their brushless RC vehicles. Whether you're a seasoned RC car UK competitor or an enthusiast looking to maintain your high-performance street car, this crown gear is a critical component that ensures smooth power delivery and optimal differential function.

As part of the FTX drivetrain spares range, the 42-tooth crown gear works in conjunction with your vehicle's differential assembly to distribute engine torque evenly between the drive wheels. This pair of precision-machined gears is manufactured to exacting OEM specifications, ensuring perfect meshing with the corresponding pinion gears and delivering the handling characteristics your FTX ready to run RC car was engineered for. Replacement becomes necessary when crown gears show signs of wear, damage, or when you're rebuilding your differential after intensive use or competition.

RC Model Shop stocks this authentic FTX spare part because we understand that maintaining your brushless RC car with genuine components is essential for reliability and performance. This is not a cheap alternative or aftermarket copy—this is the genuine FTX part that your vehicle needs for correct operation.

Key Features

• 42-tooth specification — The 42T rating determines the gear ratio characteristics of your differential assembly, carefully matched to work with the drive pinion gears and deliver the performance envelope that FTX engineered into the Stinger and EVO30 platforms.
• Precision-machined construction — Each crown gear is manufactured to tight tolerances, ensuring consistent tooth profile and smooth meshing with the mating gears, which translates to reliable power delivery and reduced wear on adjacent components.
• OEM-authentic quality — As genuine FTX spare parts, these gears match the exact specifications of the original components fitted to new vehicles, guaranteeing compatibility and correct differential function without modification or adjustment.
• Pack of two pieces — You receive a pair of crown gears, which is the standard configuration needed for a complete differential assembly where one gear is required for each side of the differential case.
• Compatible with multiple FTX platforms — This component fits the FTX EVO30 1/10 brushed and brushless street RTR cars in both red and black variants, as well as the FTX Stinger 1/10 on-road street brushless RTR cars in red and grey, making it a versatile spare part for owners of these models.
• Critical drivetrain component — The crown gears are essential to differential operation; without them, your vehicle cannot distribute power correctly to the wheels, making these gears non-negotiable for any serious RC car UK owner who wants their vehicle running properly.

Technical Performance

The FTX Stinger 42T Main Diff Crown Gear represents the engineering precision that modern 1/10 scale on-road RC cars demand. These gears are the heart of the differential system, working in partnership with the differential bevel gear set to allow independent wheel speed during cornering whilst maintaining equal torque distribution during straight-line acceleration. The 42-tooth specification is a carefully calculated compromise that provides smooth power delivery for street racing applications, avoiding the excessive gear noise and drivetrain stress that can occur with poorly matched ratios. Each gear is manufactured from hardened steel or similar high-strength material selected for its ability to withstand the shock loads and continuous rotation stress that high-performance brushless RC cars deliver, particularly when running at the 3300KV motor output specifications common in the FTX Stinger platform. The precision tooth profile ensures minimal backlash and smooth engagement, critical factors that affect handling precision and traction characteristics on tarmac surfaces. For owners of the FTX EVO30 and Stinger models operating with brushless motors and 60-amp speed controllers, these crown gears are engineered to handle the power levels and acceleration rates these vehicles are capable of producing. Installation is straightforward for users familiar with differential disassembly, making these gears suitable for DIY maintenance and rebuilds.

What's in the Box

• FTX Stinger 42T Main Diff Crown Gear pair (2 pieces)

Frequently Asked Questions

• What is a crown gear and why does my RC car need one? — A crown gear (also called a bevel gear) is the main component of your vehicle's differential system. It sits at the centre of the differential assembly and works with the drive pinion gear to distribute engine power to both drive wheels while allowing them to rotate at different speeds during cornering. The 42-tooth specification is specific to FTX Stinger and EVO30 models, and using the correct part is essential for proper vehicle function and handling.
• When should I replace my crown gears? — Crown gears should be inspected regularly and replaced if you notice any of the following: missing or chipped teeth, worn tooth profiles that appear shiny or polished rather than textured, grinding noises coming from the differential, or if your vehicle has been in a significant impact or collision. Some RC enthusiasts also replace gears as preventative maintenance during a complete differential rebuild, typically after 50-100 hours of regular use depending on driving style and surface conditions.
• Are these gears compatible with other FTX models? — These 42T crown gears are specifically designed for the FTX EVO30 (both brushed and brushless 1/10 street RTR variants in red and black) and the FTX Stinger (1/10 on-road street brushless RTR in red and grey). They are not compatible with other FTX platforms such as the Outback, Kanyon, or crawler models, which use different differential specifications.
• Can I use aftermarket gears instead of genuine FTX parts? — Whilst some aftermarket gears may fit physically, genuine FTX spare parts are engineered and tested to exact specifications that match your vehicle's complete drivetrain package, including motor power output, ESC current rating, and transmission geometry. Using non-genuine parts can result in poor meshing, increased noise, accelerated wear on related components, and compromised handling performance. For maximum reliability and authentic performance, genuine OEM parts like these FTX gears are strongly recommended.
• How difficult is it to replace crown gears? — Replacing crown gears requires disassembling your differential housing, removing the old gears, and installing the new ones before reassembling. Whilst this is a moderately technical procedure, it's well within the capability of most experienced RC hobbyists who have basic mechanical tools and patience. If you're not confident working with differential assemblies, most RC model shops and specialist technicians can handle the replacement for you.
• What tools do I need to replace these gears? — You will need basic RC hobby tools including a hex key set (Allen keys), screwdrivers, and ideally a differential tool or press to assist with gear and bearing removal and installation. A small amount of differential oil or grease will also be needed when reassembling. Refer to your FTX Stinger or EVO30 manual for detailed instructions and specific torque specifications.

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 FTX STINGER 42T MAIN DIFF CROWN GEAR (2PC) FTX10522 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.