Fonzon 40/14T Full Metal Rear Diff Set - 1/10 Losi Baja Rey
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FONZON 40/14T FULL METAL REAR DIFF SET - 1/10 LOSI BAJA REY
Compact design. Heavy-duty performance.
The FONZON Rear Differential is precision-built to handle the demands of high-speed desert and rock racing. Featuring a blend of CNC-machined and powder metallurgy components, this differential delivers smooth helical gear engagement, consistent power delivery, and long-lasting durability—all in a compact, race-ready unit.
Features
- Powder metallurgy planetary gears for reliable strength in a compact form.
- All-helical gear design for smoother, quieter operation under load.
- Metal diff case (center housing) made from 7075-T6 aluminium alloy for high rigidity and low weight.
- CNC-machined nickel-chromium alloy steel bevel gear (helical teeth)(steel makeup#4340).
- CNC-machined nickel-chromium alloy steel drive bevel gear (helical teeth)(steel makeup#4340).
- Nickel-chromium alloy steel drive cups for impact resistance and longevity(steel makeup#4340).
- Grade 12.9 gold-colored, titanium-coated screws for corrosion resistance and secure assembly.
- Fully assembled and ready to install.
Fits
- Direct fit for the rear differential mounting position of the LOSI 1/10 REY platform. (Confirm gear mesh and axle alignment before installation.)
Please Note: Due to the unique internal design of LOSI’s stock differential, it uses grease instead of differential oil. For the latest BAJA REY 2.0 models (LOS03046 and LOS03049), please use FZCSREY01 instead.
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Delivery
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We use two main status's we use on items,
IN STOCK - These items will ship same day if ordered before 2.30pm
AVAILABLE TO ORDER - These items aren't available for same day despatch and will take a day or two to be despatched.
If your order contains both IN STOCK and AVAILABLE TO ORDER items, the entire order will ship as one once all items are available.
Courier options are displayed at the checkout and will effect delivery times once your order is despatched. All transit times are estimates and based on our couriers advised average delivery times.
We offer free delivery to most Mainland UK addresses on orders over £125. Deliveries to any off-shore islands, international addresses and certain parts of Scotland/Highlands may incur delivery surcharges. These charges will depend on your postcode and the product(s) you are purchasing, examples shown below. Please contact us to clarify costs prior to purchasing if you are unsure. If you place an order and a delivery surcharge is required, a member of our team will be in contact by e-mail or phone.
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In addition to a surcharge, deliveries to the above destinations may take an extra day or two for completion.
Collections
If you choose to collect your order, please note the stock status as this will determine if your order will be able to be collected immediately or may be ready in a day or two. We will contact you via email when your order is ready to be collect. Please wait until you have been informed your order is ready to collect before visiting us to avoid disappointment.
Returns
If for any reason you are dissatisfied with your purchase, we offer a 30 day money back guarantee on all our items that are UNUSED and in their original packaging. Should you receive an item from us that you believe to be faulty, please contact us first to allow us to confirm / diagnose the fault and in many cases we can provide an immediate solution.
All refunds are at our discretion and will only be issued once we have received the returned item(s) and are satisfied that they are in unused condition. We advise that all returned items should to be sent recorded / signed for and insured to the correct product value as Make It Build It cannot be held responsible for returned items that are lost or damaged in transit. Please be aware that any refunds will not include your return postage cost.
If you wish to return any item(s) please contact us first at enquiries@makeitbuildit.co.uk. When shipping your item, please ensure your order number is displayed on the return packaging and included with the item inside the returned packaging. This will ensure that your return is dealt with in a prompt manner.
For more information on our returns policy please see our Terms & Conditions | Make It Build it




