This high-quality Center Driveshaft provides an ideal optional replacement for your kit supplied item.
Features
- Aluminum construction for weight saving
- Hex shape for positive power transfer
- Not recommended for use with higher powered motors
Includes
1 x 145mm Center Driveshaft
- Brand: ARRMA
- Model Number: Z-ARA311194
- EAN: 5052127047012
- Product Type: Center Driveshaft
- Length: 145mm
- Material: Aluminium
- Design: Hex shape
- Chassis Type: SWB (Short Wheelbase)
- Tune-Up Type: Transmission
- Compatibility: ARRMA 1/18 GRANITE GROM MEGA 380 Brushed 4x4 Monster Truck
- Compatible Models: C-ARA2102T1 (Blue/Red), C-ARA2102T2 (Red), C-ARA2102T3 (Green)
- Motor Recommendation: MEGA 380 Brushed Motor Only
- Not Recommended For: Higher powered motors
- Quantity Included: 1 x 145mm Center Driveshaft
Overview
The ARRMA Center Driveshaft Aluminum 145mm for SWB Chassis is a premium optional replacement component engineered for the ARRMA 1/18 GRANITE GROM MEGA 380 Brushed 4x4 Monster Truck. This high-quality drivetrain upgrade is designed for RC enthusiasts in the UK who are looking to optimise their ready to run RC models with reliable, performance-focused spare parts. Whether you're a dedicated basher pushing your RC car UK limits or a collector maintaining your fleet, this centre driveshaft offers the precision engineering that ARRMA is recognised for across the globe.
Built from lightweight aluminium, this 145mm driveshaft represents a genuine upgrade path for owners of the GRANITE GROM series who want to enhance their vehicle's drivetrain reliability and performance characteristics. As an optional replacement for the kit-supplied item, it's ideal for those who've worn out their original component through extensive use or who want to step up to a more durable solution. The hex-shaped design ensures positive power transfer from the transmission through to the differentials, making it an essential consideration for anyone serious about maintaining peak performance in their 1/18 scale RC monster truck.
ARRMA's commitment to quality means this driveshaft has been engineered to exacting standards and tested in real-world conditions. It's not just a simple replacement—it's an upgrade that reflects years of RC design expertise. When you choose this centre driveshaft, you're investing in genuine ARRMA engineering that will keep your GRANITE GROM running smoothly for countless bashings to come.
Key Features
- Aluminium Construction — This driveshaft is manufactured from lightweight aluminium, which reduces overall drivetrain weight compared to heavier alternatives, contributing to improved acceleration, handling balance and overall vehicle efficiency during intense bashing sessions.
- Hex Shape Design — The precise hexagonal cross-section ensures a secure, positive power transfer between the transmission and axle assemblies, minimising slip and maximising the efficiency of power delivery to the wheels regardless of driving conditions or terrain.
- 145mm Length Specification — Engineered specifically for short wheelbase (SWB) chassis applications, this exact 145mm dimension ensures perfect fitment and alignment with your GRANITE GROM's transmission and differential assemblies without modification.
- Optional Replacement Component — Designed as a direct replacement for your kit-supplied driveshaft, this upgrade is perfect for maintaining or enhancing your RC car when the original component shows wear or if you want to step up to higher-quality ARRMA engineering.
- Not Recommended for Higher Powered Motors — This component is optimally configured for the MEGA 380 brushed motor specification and is not intended for use with upgraded higher-powered motor configurations, ensuring reliability and longevity when used as designed.
Technical Performance
The ARRMA Center Driveshaft Aluminum 145mm represents precisely engineered drivetrain technology tailored for the 1/18 scale GRANITE GROM platform. The use of aluminium as the primary material demonstrates ARRMA's commitment to performance-oriented design—every gram counts in RC vehicles, and the lightweight construction of this driveshaft contributes to improved weight distribution and handling characteristics. The hex-shaped geometry is not arbitrary; it's engineered to provide maximum surface contact area with the transmission output shaft and differential input, creating a robust mechanical connection that resists wear and maintains consistent power transfer through thousands of impacts and terrain interactions. At 145mm, this driveshaft is precision-matched to the SWB chassis geometry, ensuring that suspension articulation, droop, and bump compliance all work in harmony without drivetrain binding or misalignment issues. The component is purpose-built for the MEGA 380 brushed motor system that powers the GRANITE GROM, delivering the ideal balance between durability and performance for serious RC bashers and weekend warriors alike. For UK RC hobbyists running their GRANITE GROM MEGA 380 in 4x4 mode across varied terrain—from tarmac driveways to off-road tracks and garden courses—this driveshaft provides the reliability you need without compromise.
What's in the Box
- 1 x ARRMA Center Driveshaft Aluminum 145mm
Frequently Asked Questions
- Is this centre driveshaft compatible with all GRANITE GROM models? — This 145mm aluminium centre driveshaft is specifically compatible with the ARRMA 1/18 GRANITE GROM MEGA 380 Brushed 4x4 Monster Truck. It works with all three colour variants: Blue/Red, Green, and Red. Always verify your model matches the C-ARA2102 series before ordering to ensure perfect compatibility with your RC car UK.
- What makes this driveshaft better than the kit-supplied component? — The ARRMA upgraded centre driveshaft offers enhanced durability through premium aluminium construction, which resists wear better than standard materials. The hex-shaped geometry ensures more consistent power transfer and reduced slippage compared to some original equipment options, making it an excellent upgrade for bashers who put their RC models through regular heavy use.
- Can I use this with upgraded motors? — No, this driveshaft is not recommended for use with higher powered motors. It is specifically engineered and rated for the MEGA 380 brushed motor system that comes standard on the GRANITE GROM. Installing it with upgraded motor configurations may result in component failure or reduced reliability. Stick with the MEGA 380 specification for optimal performance and longevity.
- How do I know if my driveshaft needs replacing? — Signs that your centre driveshaft may need replacement include visible bending or warping, noise or clicking from the transmission area during acceleration, or loss of power delivery to the wheels. Regular inspection after heavy bashing sessions will help you identify wear early and replace the component before catastrophic failure occurs.
- Is this an easy installation? — Replacing the centre driveshaft on your GRANITE GROM is a straightforward maintenance task that most RC hobbyists can complete in under fifteen minutes with basic hex driver tools. Simply remove the old driveshaft from the transmission output and differential input splines, and slide the new ARRMA component into place until it seats fully at both ends.
- Will this improve my RC car's performance? — Upgrading to this premium ARRMA centre driveshaft won't dramatically increase top speed, but it will deliver more consistent power transfer, smoother acceleration, and improved overall drivetrain reliability. For serious RC bashers, the benefit is peace of mind—knowing your transmission and differential are connected via a premium, wear-resistant component that ARRMA engineers have refined for peak performance.
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 Center Driveshaft Aluminum 145mm for SWB Chassis: GROM Z-ARA311194 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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