This tough steel 32T Mod1 Safe-D8 Pinion Gear is the perfect part to carry in your RC tool box
Features
- Strong and durable steel for long-lasting performance in extreme RC conditions
- Precision manufactured wide tooth profile for smooth operation
- 'D' shaped hole to match motor shaft profile so drive and brakes are not lost if the set-screw backs-out
- Suits 8mm motor shaft diameter
- Precision manufactured threaded set-screw hole
- E-clip supplied for motor shaft pinion retention
Includes
1 x 32T Mod1 Safe-D8 Pinion Gear
1 x Set Screw - M4 x 4mm
1 x E-Clip - 6mm
- Brand: ARRMA
- Part Number: Z-ARA311120
- EAN: 5052127043502
- Product Type: Pinion Gear
- Number of Teeth: 32T
- Gear Pitch: Mod1 (Module 1)
- Bore Type: Safe-D8
- Motor Shaft Diameter: 8mm
- Material: Hardened steel
- Set Screw: M4 x 4mm
- E-Clip: 6mm
- Tooth Profile: Precision manufactured wide tooth profile
- Compatible Vehicles: ARRMA 1/7 LIMITLESS 8S AVC 4X4 RTR BLX Street Speed (White/Blue), ARRMA 1/7 LIMITLESS 8S AVC 4X4 RTR BLX Street Speed (Red/Black), ARRMA 1/5 Outcast 4X4 8S BLX EXB Brushless Stunt Truck RTR (Black)
- Included: 1 x 32T Mod1 Safe-D8 Pinion Gear, 1 x Set Screw M4 x 4mm, 1 x E-Clip 6mm
Overview
The ARRMA Pinion Gear, 32T Mod1 Safe-D8 (Z-ARA311120) is an essential replacement and upgrade component for serious RC enthusiasts running ARRMA brushless RC vehicles. This tough steel pinion gear is precision manufactured to deliver reliable performance in extreme RC conditions, making it the perfect part to carry in your RC tool box for track days, bashing sessions, or competitive racing. Whether you're operating an RC buggy, RC truggy, or high-performance RC street speed car in the UK, having quality replacement gears on hand ensures you're never sidelined by a damaged drivetrain component.
Pinion gears are critical to your RC car's drivetrain, directly affecting acceleration, top speed, and overall performance characteristics. The 32-tooth configuration on this Mod1 pitch gear makes it suitable for a range of ARRMA vehicles, particularly the 1/7 scale LIMITLESS 8S models and the 1/5 scale Outcast 4X4 8S platform. Choosing the right pinion gear ratio is fundamental to optimising your RC vehicle's performance, and ARRMA's engineered solutions ensure compatibility and durability across their entire vehicle range. This makes the Safe-D8 pinion an ideal choice for bashers and racers alike who demand reliability and precision-engineered components.
What sets the Safe-D8 design apart from standard pinion gears is its innovative D-shaped bore profile, which matches your motor shaft geometry to provide fail-safe drivetrain security. This feature is particularly valuable for high-powered brushless RC vehicles running 8S LiPo batteries, where sudden gear slip or loss of drive can result in expensive damage or lost races. Combined with the precision-manufactured wide tooth profile, this pinion gear delivers smooth operation and consistent power delivery, making it an indispensable upgrade for any serious RC car enthusiast in the UK.
Key Features
- Strong and durable steel construction — This pinion gear is manufactured from hardened steel, which provides exceptional durability and longevity even under the extreme stress of high-performance brushless RC driving, ensuring your investment remains reliable through countless bashing sessions and competitive events.
- Precision manufactured wide tooth profile — The carefully engineered tooth geometry ensures smooth meshing with your spur gear, reducing noise, minimising wear, and delivering consistent power transfer throughout each drive cycle, which is critical for maintaining peak performance and extending component lifespan.
- Safe-D8 secure bore design — The distinctive D-shaped hole is engineered to match your 8mm motor shaft profile precisely, preventing the pinion gear from slipping or spinning loose even if the set-screw backing-out, ensuring you maintain drive and braking authority in critical moments.
- 8mm motor shaft compatibility — Suits brushless motors with 8mm diameter output shafts, which are standard across many modern ARRMA brushless RC vehicles, making this a universal fit for compatible platforms.
- Precision manufactured threaded set-screw hole — The expertly machined M4 x 4mm set-screw hole allows for secure fastening while remaining easy to adjust or replace, critical for tuning gear mesh and maintaining optimal drivetrain efficiency.
- E-clip supplied for motor shaft retention — The included 6mm E-clip provides secondary retention security on your motor shaft, adding an extra layer of protection against accidental gear removal during aggressive driving or after impacts.
Technical Performance
The ARRMA Pinion Gear, 32T Mod1 is engineered to deliver exceptional performance across ARRMA's range of brushless RC vehicles. With 32 teeth and Mod1 pitch (module 1), this gear is designed to mesh perfectly with ARRMA spur gears, delivering precise gear ratios that optimise acceleration and top speed characteristics. The 8mm Safe-D8 bore is specifically designed for use with modern ARRMA brushless motors found in high-performance 8S LiPo-powered vehicles such as the 1/7 LIMITLESS 8S AVC 4X4 brushless street speed cars and the 1/5 Outcast 4X4 8S brushless stunt truck. The hardened steel construction ensures this gear can handle the extreme torque and RPM demands of powerful brushless electric motors, delivering reliability that matches the performance expectations of modern RC bashers and racers throughout the UK. The precision-manufactured wide tooth profile minimises backlash and ensures smooth, quiet operation, whilst the innovative D-shaped bore eliminates the risk of drive loss if your securing set-screw were to vibrate loose during aggressive driving or high-impact collisions.
What's in the Box
- 1 x 32T Mod1 Safe-D8 Pinion Gear
- 1 x Set Screw M4 x 4mm
- 1 x E-Clip 6mm
Frequently Asked Questions
- What ARRMA vehicles is this 32T pinion gear compatible with? — This Safe-D8 pinion gear is compatible with the ARRMA 1/7 LIMITLESS 8S AVC 4X4 RTR BLX Street Speed models (both White/Blue and Red/Black versions) and the ARRMA 1/5 Outcast 4X4 8S BLX EXB brushless stunt truck RTR. Always verify your vehicle's motor shaft diameter is 8mm before purchasing to ensure proper compatibility.
- Why would I need a replacement pinion gear? — Pinion gears are wear items that can become damaged through normal use, impacts, or accidents during RC driving sessions. Carrying spare pinion gears in your RC tool box ensures you can quickly swap a damaged gear and get back to driving rather than facing extended downtime. Having multiple gear ratios available also allows you to tune your vehicle's performance for different tracks or driving conditions.
- What does the Safe-D8 bore design do? — The Safe-D8 D-shaped bore is engineered to match your 8mm motor shaft profile, preventing gear slip or rotation if your set-screw accidentally backs out during driving. This fail-safe design is particularly important for brushless RC vehicles where loss of drive could result in expensive damage or a lost race.
- How does gear ratio affect my RC car's performance? — Pinion gear tooth count directly influences your vehicle's speed and acceleration characteristics. Fewer teeth on the pinion (lower numbers) result in higher top speed but lower acceleration, whilst more teeth (higher numbers) increase acceleration at the cost of reduced maximum speed. The 32T configuration offers a balanced setup suitable for general-purpose driving on street and track surfaces.
- Is this suitable for beginners? — Whilst this pinion gear is a straightforward replacement component, it is best suited for RC enthusiasts with basic mechanical knowledge of their vehicle's drivetrain. Beginners should ensure they understand their vehicle's specification and motor shaft diameter before attempting gear replacement.
- What tools do I need to install this pinion gear? — You will typically need an Allen key or hex wrench to tighten the M4 x 4mm set-screw, and basic mechanical tools for removing your old pinion and installing the new one. Always consult your ARRMA vehicle manual for detailed installation instructions specific to your model.
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 ARRMA Pinion Gear, 32T Mod1 Safe-D8 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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