GPM Racing 40CR Steel Motor Gear 17T (Module:0.5mm,motor Tooth Diameter:3.175mm) (MG317T/0.5M)
GPM Racing

GPM Racing 40CR Steel Motor Gear 17T (Module:0.5mm,motor Tooth Diameter:3.175mm) (MG317T/0.5M)

£7.49
In Stock — ships today
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 MG317T/0.5M 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

Weight
18 g

About this product

Replacement pinion for compact motors

The MG317T/0.5M pinion is sized for motors that match the specified module and motor tooth diameter. Manufactured from 40Cr steel and finished in hardened black, it aims to reduce wear relative to typical stock gears and help keep drivetrain output consistent in everyday use.

Key specs: 17 teeth at module 0.5mm, motor tooth diameter 3.175mm, round motor bore, retained by two 3×3 set screws. Confirm motor shaft measurements and mesh parameters before purchasing to ensure compatibility.

Application notes: use the pinion when replacing worn gears or when tuning final drive ratios. Install concentrically, set the correct mesh with the spur gear, and tighten the two set screws evenly to maintain alignment. Small adjustments to pinion size will produce predictable effects on acceleration and top speed.

What measurements should I confirm before buying?

Measure your motor tooth diameter and confirm the pinion module is 0.5mm. Also check bore type and available clearance for the two 3×3 set screws to ensure a correct fit.

Is there any break-in required after installation?

After installing and setting the mesh, run the drivetrain at low speed for a short period to confirm alignment and to let the parts seat. Recheck set screws and mesh after the initial run. 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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