GPM Racing Aluminium 7075 Rear Hub (Larger Inner Bearings) for Arrma 1/18 Granite Grom (MGG022)
GPM Racing Aluminium 7075 Rear Hub (Larger Inner Bearings) for Arrma 1/18 Granite Grom (MGG022)
GPM Racing Aluminium 7075 Rear Hub (Larger Inner Bearings) for Arrma 1/18 Granite Grom (MGG022)
GPM Racing Aluminium 7075 Rear Hub (Larger Inner Bearings) for Arrma 1/18 Granite Grom (MGG022)
GPM Racing Aluminium 7075 Rear Hub (Larger Inner Bearings) for Arrma 1/18 Granite Grom (MGG022)
GPM Racing Aluminium 7075 Rear Hub (Larger Inner Bearings) for Arrma 1/18 Granite Grom (MGG022)
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GPM Racing

GPM Racing Aluminium 7075 Rear Hub (Larger Inner Bearings) for Arrma 1/18 Granite Grom (MGG022)

£20.99
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No import duty or VAT to pay
We are the importer of record — the price you see is the price you pay.
UK warranty & returns
Handled by us in the UK under the Consumer Rights Act — no sending it overseas.
SKU MGG022 Category GPM Racing Parts
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24hr or 48hr delivery — choose at checkout ✓ Free delivery on orders over £129.99

What our customers say

A selection of recent five-star reviews, as written.

  • Ordered flishrc cobra. Communication was great. Ordered larger batteries but they were the wrong size. Olly shipped the right batteries and gave a refund for the difference I paid. Couldn't ask for more. Thanks for the help with the order.

    Robert, 22 September 2026

  • Very helpful when the vehicle I wanted wasn't in stock. Very fast deliver too.

    Anna Abbott, 17 September 2026

  • Excellent service speedy delivery and good customer service

    GLYN, 10 September 2026

  • Great product and service. I enjoy buying from these guys. Thanks to radio-controllled.co.uk.

    Paul Jordan, 3 September 2026

  • Dealt with customer services over an order I accidently placed, they were prompt and dealt with it will, completely refunded within a small window of time, thanks!

    Oliver Galustian, 23 July 2026

  • Really good online rc store with some great products and sales on. The owner is very knowledgeable as well.

    Simon, 19 July 2026

  • Product delivered promptly and in excellent condition 👍had very helpful and prompt responses from Olly to all my questions, I will definitely be using them again 👍

    Mark Clucas, 30 January 2026

  • The customer service and advice were first class!

    Steve Avery, 9 September 2025

  • The seller knew I was after one and very kindly informed me when they came back into stock so now have a Flywing Bell 206. Fantastic bit of kit. Well worth the wait.

    Pete Goddard, 15 April 2025

  • Great service, car arrived fast and really well packaged. Also, I had a little problem....(which turned out to be me doing it wrong) but someone replied the same evening! Will definitely be buying from them again.

    Graham Rousseau, 10 February 2025

🚚 Calculating…
24hr or 48hr delivery — choose at checkout ✓ Free delivery on orders over £129.99

Key Specs

Scale
1/18
Weight
24 g

About this product

GPM Rear Hub Upgrade for ARRMA Granite Grom Mega

This 7075 aluminium rear hub from GPM is a direct upgrade to stabilise the universal joint and bearing locations on the ARRMA Granite Grom Mega. The component emphasises material strength and straightforward servicing to extend rear end reliability under regular use. Suitable for hobbyists looking for a durable replacement part that keeps the rear assembly controlled during demanding runs.

Packing includes

  • Rear hub – 2pcs
  • Bearing 7x13x4 – 4pcs

Original Name / Part No:

  • ARA320807 / ARA330807

Compatible Model

  • ARRMA-1/18 4WD GRANITE GROM MEGA 380 BRUSHED 4X4 MONSTER TRUCK-ARA2102

Write Product Review Please sign in your account before you can write any review.

Made to order: GPM Racing parts are shipped to us from GPM’s factory, so please allow around 14 days for dispatch.

What our customers say

A selection of recent five-star reviews, as written.

  • Ordered flishrc cobra. Communication was great. Ordered larger batteries but they were the wrong size. Olly shipped the right batteries and gave a refund for the difference I paid. Couldn't ask for more. Thanks for the help with the order.

    Robert, 22 September 2026

  • Very helpful when the vehicle I wanted wasn't in stock. Very fast deliver too.

    Anna Abbott, 17 September 2026

  • Excellent service speedy delivery and good customer service

    GLYN, 10 September 2026

  • Great product and service. I enjoy buying from these guys. Thanks to radio-controllled.co.uk.

    Paul Jordan, 3 September 2026

  • Dealt with customer services over an order I accidently placed, they were prompt and dealt with it will, completely refunded within a small window of time, thanks!

    Oliver Galustian, 23 July 2026

  • Really good online rc store with some great products and sales on. The owner is very knowledgeable as well.

    Simon, 19 July 2026

  • Product delivered promptly and in excellent condition 👍had very helpful and prompt responses from Olly to all my questions, I will definitely be using them again 👍

    Mark Clucas, 30 January 2026

  • The customer service and advice were first class!

    Steve Avery, 9 September 2025

  • The seller knew I was after one and very kindly informed me when they came back into stock so now have a Flywing Bell 206. Fantastic bit of kit. Well worth the wait.

    Pete Goddard, 15 April 2025

  • Great service, car arrived fast and really well packaged. Also, I had a little problem....(which turned out to be me doing it wrong) but someone replied the same evening! Will definitely be buying from them again.

    Graham Rousseau, 10 February 2025

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