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Arrma (ARA)
SKU:ARA311051
Spur Gear 39T (ARA311051)
Spur Gear 39T (ARA311051)
This 39-tooth spur gear in Mod 1 (1.0 module) tunes the gear ratio on ARRMA model vehicles, letting you tailor how power is delivered from the motor to the drivetrain to suit your driving style.
Made from strong steel with a precisely machined tooth profile, it delivers smooth power transfer and consistent performance, even under the demands of large brushless motors driving the drivetrain.
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Parts List
Product Manual
Product Manual

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Overview
The Spur Gear 39T (ARA311051) is an essential component for tuning the gear ratio of your ARRMA model, ensuring optimal performance on the track.
Engineered from strong steel, this high-quality spur gear offers long-lasting durability across all conditions. Its precision-manufactured tooth configuration ensures smooth power transfer and consistent performance, allowing for reliable operation even when paired with large-scale brushless motors in your vehicle's drive line.
This product includes one Spur Gear with 39 teeth and features a 1.0 module gear pitch, making it an excellent choice for enhancing your model's operation.
Features
- Tuning capability for ARRMA models
- Strong steel construction for durability
- Precision manufactured tooth configuration for smooth power transfer
- Consistent performance with large-scale brushless motors
- 39 teeth design
- 1.0 module gear pitch
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Specifications
- Product Name: Spur Gear 39T (ARA311051)
- Tooth Count: 39T
- Gear Pitch: 1.0 Module
- Material: Strong Steel
- Compatibility: ARRMA Models
- Features: Precision manufacturing, Durable, Smooth power transfer
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Vendor:VendorRegular price $41.99Regular priceUnit price / per$34.99Sale price $41.99 -
Example product title
Vendor:VendorRegular price $41.99Regular priceUnit price / per$34.99Sale price $41.99 -
Example product title
Vendor:VendorRegular price $41.99Regular priceUnit price / per$34.99Sale price $41.99 -
Example product title
Vendor:VendorRegular price $41.99Regular priceUnit price / per$34.99Sale price $41.99
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