FAQs – G3ARED

FAQs & Help

Please take a look at the sections below to find the answers you’re looking for. If you can’t find what you’re looking for or have additional questions, please don’t hesitate to contact us. We’re always here to help!

Title

General Information

What is a GTRO?

The GTRO is a 3-speed planetary gearbox, all built compactly into the right crank and made right here in the UK.

Will the GTRO be compatible with my bicycle frame?

The GTRO is compatible with all frames fitted with a traditional BSA/English bottom bracket shell.
The GTRO is not compatible with centre-drive frames or those fitted with a non-BSA/English bottom bracket shell.

The most common applications for the GTRO are, but not limited to: Folding, Cargo, Road, Fat Tyre, Hybrid, etc.

Can I use the GTRO with a rear hub motor/gearbox?

Indeed you can. The GTRO is compatible with almost all motor, internal geared and fixed sprocket rear hubs. Due to this, the GTRO is a quick and simple upgrade anyone can make to their drivetrain.

Non-compatible models are systems which require torque sensing bottom brackets, centre-drive motor/gearboxes, traditional derailleur systems, or rely on the ability to pedal backwards.

Does the GTRO work with chain or belt?

The GTRO works seamlessly with both chain-drive and belt-drive!

So long as your belt/chain-ring is 5-arm 130BCD, then your drive system will be fully compatible.

What is the benefit of using the GTRO?

In short, the key benefit to using the GTRO is the ability to instantly upgrade your bicycle with 3 additional gears, without having to modify your frame or purchase a new drive-train system (i.e. motor, hub, chain, etc.). The GTRO is a low maintenance, easy-to-install solution for those who want to effortlessly upgrade their bike; and excels for adding gears to a rear hub motor system where geared options are limited.

Is the gearing right for me?

The GTRO is equipped with 3 perfectly spaced gears, 1st gear (1:1), 2nd gear (1:1.43), and 3rd gear (1.79).

Input your available front/rear gear options and wheel size to the calculator below to see exactly how they translate into real-world performance. This tool helps you confirm that your specific setup covers the range you need for both climbing and cruising.

Gear Ratio & Inch Calculator

Front Tooth

Rear Tooth

Wheel Diameter (in)

Gear	Equiv. Front	Gear Ratio	Gear Inch
1	-	-	-
2	-	-	-
3	-	-	-

How durable is the GTRO?

The GTRO is ISO 4210-8 tested and certified, meaning it's as durable as any mountain bike rated crank-set on the market. Additionally, we have completed rigorous on-road, off-road, and inhouse laboratory tests for durability (There are no industry norms for front gearboxes).

On top of it's bulletproof durability, the GTRO is equipped with dynamic seals that protect against water, dust, dirt, and salt ingress.

Does the GTRO require a battery or electricity?

No. The GTRO is a fully mechanical device. No batteries, controllers, wires, screens or apps required!

How do I install my gearbox?

To learn how to install your gearbox, please follow the attached link below to our fitment guide.

Fitment Guide

Warranty Information

How do I submit a warranty claim?

If you wish to submit a warranty claim, please reach out to our customer service for further assistance.

What isn't covered under warranty?

Warranty claims will not be upheld if any damage or defects are caused by abnormal use, lack of maintenance, accidental damage, prolonged exposure to moisture or liquid, such as the following

Taking the gearbox apart

Using unofficial oil/grease

Signs of tampering with the gearbox

Using unoffical components, such as bottom brackets or shifters

User inflicted damage to the gearbox such as, but not limited to:

o Incorrect cable management.

o Incorrect belt tension.

o Over/under-tightening the gearbox outside of recommended torque levels.

o Jet washing gearbox seals

o Improper maintenance/servicing

o Accidental damage inflicted by mishandling.

How long is my warranty period?

All GTRO gearboxes are equipped with a standard 1 year out-the-box warranty.

Maintenance & Care

How often do I need to service my gearbox?

We recommend servicing your GTRO with 1ml of GTRO maintenance oil every 1000 miles.

Use the official GTRO maintenance oil that's provided with your order, OR purchased directly off our site.

Failing to use official GTRO maintenance oil will void your warranty.

The crank bolt should be checked as part of routine cycle maintenance. Do NOT tighten beyond 40Nm.

How do I service my gearbox oil?

Servicing your gearbox oil is a quick and easy process. Simply follow the below steps:

Locate and remove the oil service bung from fill hole located on the gearbox body.

Using the pipette provided with your service oil, inject ~1ml of oil (one full pipette) into the fill hole.

Re-insert the oil service bung into the fill hole, and slowly shift through each gear while rotating the cranks.

To finish, wipe away any remaining excess oil from the service.

What's the best way to clean my GTRO?

DO gently clean with a microfibre cloth and warm soapy water to maintain the
appearance and prevent the buildup of road grit and dirt

DO NOT jet/power wash. This can potentially damage the gearbox seals and can
wash out gearbox lubrication. Doing so will void gearbox warranty.

DO NOT use harsh cleaning chemicals. This may cause damage to the exterior
paint of the gearbox.

Shipping & Returns

How do I track my order?

Tracking details will be sent to you via email once your order has reached dispatch. We recommend seeing the courier site for further details on tracking the status of your delivery.

Do you ship internationally?

Yes we do! Please reach out via our contact page for further assistance.

What if I change my mind?

You can cancel any order within 14 days of receiving your original order*.

A nominal fee of £2 will be deducted from your refund for each unwanted parcel returned.

You will receive a refund for the full amount of your order, minus the returns fee, plus up to a maximum of £3.99 for the original delivery cost.

Goods must be returned in their original packaging in the same condition that it was when received, and will be inspected on return.

Goods remain your responsibility until they reach our warehouse, so make sure they’re properly packed and can’t get damaged on the way.

Please do not use any additional tape to secure the original box/packaging. You may wrap the parcel(s) in some kind of additional packaging i.e. refuse sacks or boxes.

How do I return my order?

For all returns, please contact our aftersales team prior to sending anything back to us. Contact Us

Regardless of the method by which you return any item/s to us, you must fill out the returns label that arrived with your order indicating which items you are returning and why, and place this within your parcel.

Please note, we do not accept returns for incorrectly specified cable lengths.

Customer Arranged Delivery

If you are arranging the return, then please use a tracked and insured service. Please retain receipt of postage as we cannot take responsibility for your parcel if it does not arrive back to us. In such circumstances, we would, unfortunately, not be able to offer a refund.

Return address:

G3ARED Returns Dept, Unit 3 Hillridge Road, Martland Park Industrial Estate, Wigan WN50LS

Arranged Collection

If you wish for us to arrange a collection from your home or business address, there will be a charge of £19.99 per box. The collection charge will be deducted from your refund. Our aftersales team will arrange the collection at your convenience.

More information

We regret that we cannot issue refunds or exchanges after the 14-day period, as outlined in the Consumer Contracts Regulations. We understand that goods need to be examined and, in some cases, assembled; however, you as the consumer have a duty to take reasonable care of the goods.

Where returns are accepted, please be aware that the process typically takes 5-7 working days to complete. You will be notified via phone or email as soon as we have inspected the returned item. Once assessed, you will be issued with a replacement (if the item cannot be repaired) or a refund.

If the item is not faulty, G3ARED will contact you to discuss the next steps. Under some circumstances—usually when a product is no longer within the warranty period—we may be able to offer spare parts. Please note that products sold as spare parts have a 3-month warranty.

This returns policy does not affect your legal rights. Details of your legal rights are available from the Citizens’ Advice Bureau or Consumer Direct.

My order has arrived damaged

In the unlikely event that one of your G3ARED products is damaged during delivery or develops a fault then please report this to our customer service so we can take appropriate action.

If an item arrives damaged or faulty this must be reported within 7 days of receiving the item. Beyond this period, any fault to the product must be reported as soon as is reasonably possible. We may ask the customer to provide details of the fault or damage so we can assess the best way to deal with the problem.

Orders & Payments

How long will it take to build my order?

All orders are built and dispatched within 5 working days of placing the initial order.

Accepted Payment Methods

We accept all card, digital and bank transfer payments.

I need a bottom bracket width that isn't listed

If your bottom bracket width is not listed, please reach out to our customer service team for further help. We stock some non-standard sizes which are subject to availability and additional costs.

Does the GTRO come in other colours?

As of this moment in-time the GTRO only available in black and silver.

If you are a business with additional requirements, please enquire via our B2B page.

B2B Page

Can I make changes to my order?

Providing that your order has not yet reached dispatch, adjustments and additions can be made to your existing order. We recommend contacting our customer service team as quickly as possible to make any necessary changes.

If your order has been dispatched, additional items will have to be shipped separately to your primary order. If you needed to make an adjustment to your cable length, you will have to complete this yourself using our gearbox fitment guide.

Please note, we do not accept returns for incorrectly specified cable lengths.

Troubleshooting

"My gearbox feels tight to turn"

Check belt/chain tension, and the belt/chain-line, to ensure this isn’t too tight and putting the gearbox under tension. Also check the condition of the belt and beltring for damage.

"The belt is skipping"

If you experience belt skipping, check the condition of the beltring and belt. Common signs of a damaged beltring are a consistent clunking noise and significant vibration through the gearbox.

"There is play in the beltring, Is this normal?"

Yes, the gearbox features a free-floating spider that allows the belt-ring to find its natural line and move to suit the rear sprocket. As a result side-to-side movement is completely normal and is no cause for concern.

“My gearbox is making some noise, is this normal?”

Yes it is. Due to the mechanical nature of the gearbox, with multiple components moving, shifting, and causing friction, a small amount of noise is normal.

If a significant amount of noise is coming from the gearbox, grinding, high pitched noises etc. Please contact customer support for further assistance.

“My gearbox is difficult to shift/not shifting.”

Reduce pedal pressure during a shift to allow for a smoother, faster shift. Applying more pressure will prevent the gearbox from falling into gear.

“Why is there oil leaking from my gearbox?”

The gearbox is equipped with multiple seals which will allow for oil to expel when levels inside exceed the required amount; therefore, a small amount of oil leaking can occur for a small period after manufacture or maintenance.