Team Corally 32DP Pinion Gear Short Hardened Steel 21 Teeth 3.17mm C-71521

Overview

The Corally 32 DP Pinion Short Hardened Steel 21 Teeth is a precision-engineered pinion gear designed for serious RC enthusiasts who demand the absolute best performance from their electric RC cars and trucks. Whether you're running a competitive 1/10 scale buggy, truck, or stadium racer, this 21-tooth pinion gear delivers the gearing flexibility needed to fine-tune your vehicle's acceleration and top speed for any track condition. Manufactured by Team Corally, a brand recognised for delivering professional-grade RC components across Europe, this pinion gear represents the pinnacle of gear engineering and is compatible with all vehicles equipped with 32DP transmission systems.

If you're serious about RC racing or bashing in the UK, understanding gearing is absolutely crucial. The tooth count on your pinion gear directly affects your vehicle's performance characteristics—more teeth means higher top speed but lower acceleration, while fewer teeth deliver incredible acceleration at the cost of top speed. With this 21-tooth option available, you have the flexibility to dial in the perfect setup for your specific track, weather conditions, and driving style. This makes the Corally 32 DP Pinion an essential component for anyone running a competitive RC car or truck.

What sets this pinion gear apart from budget alternatives is the engineering excellence behind every tooth. Corally's commitment to precision manufacturing means you get vibration-free operation, consistent performance lap after lap, and durability that won't let you down during crucial races. UK-based RC enthusiasts trust Corally components because they deliver results when it matters most.

Key Features

• Hardened Steel Construction — Manufactured from special hardened steel specifically engineered for maximum toughness and durability, this pinion gear can withstand the extreme forces generated during acceleration and high-speed driving without stripping, cracking, or wearing prematurely, ensuring consistent performance across countless racing sessions.
• CNC-Cut Teeth for Perfect Geometry — Every tooth is cut using computer numerical control machinery to achieve flawless tooth shaping and concentricity, eliminating the vibration, noise, and wear that comes from poorly manufactured gears and delivering smooth, silent power delivery to the spur gear.
• 32DP Pitch Standard — This pinion gear is manufactured to the 32DP (32 Diametral Pitch) standard, making it compatible with all vehicles in the 32DP gear family, allowing you to build modular setups and swap components between different platforms without compatibility issues.
• Ultra-True Running — Corally's precision manufacturing ensures each pinion runs true without wobble or runout, delivering vibration-free operation that translates directly into improved handling, reduced mechanical noise, and extended component lifespan.
• 21-Tooth Configuration — With 21 teeth, this pinion offers a balanced gearing option that provides strong acceleration whilst maintaining respectable top speed, making it an excellent choice for mixed-surface racing or when you need versatility across different track layouts.
• 3.17mm Motor Shaft Compatibility — Engineered specifically for 3.17mm diameter motor shafts, this pinion fits directly onto standard brushless RC motors without adapters, ensuring secure, vibration-free power transfer with no slippage or runout.
• Easy Identification Marking — Each pinion is clearly marked with the tooth number for instant and accurate identification, eliminating confusion when swapping gears and making it easy to track which gear ratio is installed in your vehicle.
• Made in Europe — Manufactured to European engineering standards by Corally, you can be confident in the quality, consistency, and reliability of every component produced.
• Compact Short Design — The short pinion profile minimises weight whilst maintaining structural integrity, helping to keep your vehicle's rotational mass low and improving acceleration response and handling agility.

Technical Performance

This Corally pinion gear represents the convergence of material science and precision manufacturing. The hardened steel construction provides exceptional durability compared to lighter aluminium or softer steel alternatives, making it the choice of racers who prioritise reliability over marginal weight savings. The special steel compound has been selected specifically for its ability to resist deformation, pitting, and tooth breakage even under extreme torque loads generated by high-performance brushless motors running on 3S or 4S LiPo batteries. When installed on a standard 3.17mm motor shaft, it delivers perfectly centred power transmission with zero runout, eliminating the vibration that can cause premature wear in spur gears, differential components, and suspension bearings. The teeth width of 4mm and overall gear length of 9mm provide an optimal balance between strength and efficiency, whilst the 1.5mm hex key size indicates this is a genuine precision component designed to professional standards. Whether you're running this in a high-speed 2WD buggy, a competitive 4WD truck, or a stadium racer, the 21-tooth configuration sits in the sweet spot for most UK racing conditions, offering the flexibility to achieve strong acceleration without sacrificing too much top speed.

What's in the Box

• Corally 32 DP Pinion Short Hardened Steel 21 Teeth Shaft Dia. 3.17mm (C-71521)

What You Need to Complete

• RC car or truck with 32DP transmission and 3.17mm motor shaft diameter
• Spur gear compatible with 32DP pitch (sold separately)
• Brushless motor with 3.17mm shaft
• Electronic speed controller and battery system

Frequently Asked Questions

• What does 32DP mean and why is it important? — DP stands for Diametral Pitch, which is a standardised measurement of gear tooth density. 32DP refers to 32 teeth per inch of diameter, meaning gears with this specification have smaller, more closely-spaced teeth than lower DP ratings. This standard is universal across the RC hobby, so a 32DP pinion works with any 32DP spur gear, regardless of brand. Using mismatched DP ratings will cause serious damage to your transmission, so always ensure your pinion and spur gear have the same DP specification.
• How do I choose between different tooth counts like 19T, 21T, or 23T? — The tooth count determines your vehicle's gear ratio, which directly affects performance. Lower tooth counts (such as 19T) provide stronger acceleration but lower top speed, making them ideal for tight, technical tracks with lots of corners. Higher tooth counts (such as 23T) deliver higher top speed with slightly reduced acceleration, suiting faster, more open tracks. The 21-tooth configuration sits in the middle, offering a balanced approach that works well across most UK racing tracks and provides versatility when conditions change.
• Will this pinion work with my motor? — This Corally pinion is designed specifically for motors with a 3.17mm diameter shaft, which is the standard size found on most competitive 1/10 scale brushless motors. Check your motor's specifications to confirm the shaft diameter matches 3.17mm before purchasing. If your motor has a different shaft diameter (such as 2.5mm or 4mm), you'll need a different pinion gear.
• Is hardened steel pinion better than aluminium? — Yes, hardened steel is significantly more durable than aluminium for pinion gears. Whilst aluminium is lighter, it's considerably softer and more prone to stripping, cracking, and wearing out quickly under the high torque loads from brushless motors. Hardened steel resists deformation and tooth damage far better, meaning you'll get many more racing sessions before needing replacement. For competitive racing where reliability is paramount, hardened steel is the only sensible choice.
• How often should I replace my pinion gear? — With proper maintenance and regular lubrication, a hardened steel pinion like this Corally unit can last for dozens of racing sessions. Inspect your pinion regularly for signs of chipping, cracking, or excessive wear. If teeth appear flattened or damaged, replacement is necessary to prevent catastrophic spur gear damage. Always pair your pinion with a new or freshly-serviced spur gear when replacing either component.
• Can I use this pinion on different cars? — Yes, as long as your vehicle has a 32DP transmission system and a 3.17mm motor shaft, this pinion will fit. Many modern 1/10 scale buggies, trucks, and stadium racers use this standard, so you can move this pinion between different vehicles for testing and comparison.
• What makes Corally pinions better than budget alternatives? — Corally pinions are manufactured using CNC precision machinery and special hardened steel, ensuring perfect tooth geometry and concentricity that you simply cannot find in budget pinions. This precision translates to vibration-free operation, extended component lifespan, and improved overall vehicle performance. Racing competitors across the UK trust Corally because the difference in quality is immediately noticeable in how smoothly their vehicle runs.

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 CORALLY 32 DP PINION SHORT HARDENED STEEL 21 TEETH SHAFT DIA. 3.17mm C-71521 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.