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Fonzon 43T 13T Metal RC Front Rear Diff Upgrade ARRMA 6S FZCS64313T
The Fonzon FZCS64313T is a fully assembled metal front or rear differential upgrade for compatible ARRMA 6S RC vehicles. Featuring 43T/13T gearing with a 3.31:1 ratio, CNC-machined 4340 steel gears, a 7075-T6 aluminium differential case and factory-filled 100,000 cSt silicone oil, it provides a durable drivetrain solution for high-performance bashing and speed-focuséd setups.
Features
- 43T/13T Differential Gearing: Provides a 3.31:1 ring-and-pinion ratio intended for higher wheel-speed applications when compared with higher numerical differential ratios.
- 4340 Alloy Steel Gears: Nickel-chromium alloy steel gear construction is designed to handle demanding drivetrain loads in compatible ARRMA 6S vehicles.
- 7075-T6 Aluminium Differential Case: Machined alloy housing provides rigidity and strength while helping manage component weight.
- Front or Rear Installation: Designed for use in either differential position on supported ARRMA 6S drivetrain configurations.
- Matched 13T Input Gear: Supplied with a matching bevel input gear for use with the 43T differential main gear.
- Extended Steel Drive Cups: Nickel-chromium alloy drive cups feature a 1.5mm extension intended to help minimise drivetrain misalignment under load.
- Titanium-Coated Hardware: Grade 12.9 screws feature a corrosion-resistant gold-coloured titanium coating.
- Sealed Bearings: Quality sealed drive-cup bearings support smooth rotation and consistent differential operation.
- 100K Differential Oil: Factory-filled with 100,000 cSt silicone oil to provide controlled internal differential action.
- Factory-Assembled Unit: Supplied assembled and tested to simplify installation compared with building a differential from individual components.
- Split Differential Construction: Serviceable metal differential housing supports future inspection and maintenance.
- Gear Mesh Adjustment: Supplied shim set allows fine-tuning of the ring-and-pinion gear engagement during installation.
- Wide ARRMA 6S Application: Manufacturer-listed platforms include Kraton, Outcast, Notorious, Talion, Mojave, Infraction, Felony, Fireteam and Typhon 6S models.
Specifications
- Brand: Fonzon
- Manufacturer Part Number: FZCS64313T
- SKU: FZCS64313T
- Product Type: Metal Front or Rear Differential Upgrade Set
- Vehicle Platform: Compatible ARRMA 6S RC Vehicles
- Installation Position: Front or Rear
- Differential Main Gear: 43T
- Matched Input Gear: 13T
- Ring-and-Pinion Gear Ratio: Approximately 3.31:1
- Gear Material: 4340 Nickel-Chromium Alloy Steel
- Differential Case Material: 7075-T6 Aluminium Alloy
- Drive Cup Material: Nickel-Chromium Alloy Steel
- Drive Cup Extension: +1.5mm
- Hardware: Grade 12.9 Titanium-Coated Screws
- Bearings: Sealed Drive-Cup Bearings
- Factory Differential Oil: 100,000 cSt Silicone Oil
- Assembly: Factory-Assembled and Oil-Filled
- Quantity: 1 Front or Rear Differential Upgrade Set
- Manufacturer-Listed Vehicle Families: ARRMA Kraton 6S, Outcast 6S, Notorious 6S, Talion 6S, Mojave 6S, Infraction 6S, Felony 6S, Fireteam 6S and Typhon 6S
- Application: High-Performance RC Bashing and Speed-Oriented Drivetrain Tuning
Includes
- 1 x Fonzon 43T Fully Assembled Front or Rear Differential
- 1 x Matched 13T Bevel Input Gear
- 1 x Differential Shim Set
- 1 x LSD Clutch Plate Set
- 100,000 cSt Silicone Differential Oil (Factory-Filled)
FAQ
Does FZCS64313T include both a front and rear differential? No. The package contains one assembled differential suitable for the front or rear position of a compatible ARRMA 6S vehicle. It also includes a matched input gear and installation accessories.
Will the 43T/13T Fonzon differential increase my ARRMA's top speed? The 3.31:1 ratio is designed for speed-focuséd gearing compared with higher numerical ratios such as 4.30:1. However, actual speed depends on the vehicle's existing gearing, motor, battery and tyre size. Higher-speed ratios can reduce wheel torque and increase motor load.
Can I install this differential in an ARRMA Kraton 6S or Typhon 6S? Fonzon lists both Kraton 6S and Typhon 6S among its supported vehicle families. Check the exact chassis generation, differential housing and original gear ratio before installation. Older and newer drivetrain variants may require different components or setup adjustments.
Is the differential ready to install, or does it need to be filled with oil? The differential is factory-assembled and pre-filled with 100,000 cSt silicone oil. The installer should still check the gear mesh, shimming and compatibility with the vehicle's surrounding drivetrain components.
Important Notes
- This is one front or rear differential upgrade assembly, not a pair and not a centre differential.
- The 43T differential main gear must be uséd with the matching 13T input gear. Do not assume compatibility with the vehicle's existing input pinion.
- The 3.31:1 gear ratio may differ from the factory ratio. Confirm that the gearing is appropriate for the exact vehicle and intended use before installation.
- On a four-wheel-drive vehicle, the front and rear differential ratios must match. Do not mix the 43T/13T ratio with a different axle ratio.
- Manufacturer-listed vehicle families cover multiple generations and configurations. Verify exact model fitment and differential housing clearance before purchasing.
- Higher-speed gearing can increase motor and ESC temperatures and reduce low-speed pulling power. Monitor the vehicle after installation.
- Inspect and adjust the differential gear mesh using suitable shims before driving.
- The differential contains 100,000 cSt silicone oil. Alternative oil viscosities may change differential behaviour.
- This is an aftermarket Fonzon upgrade and not a genuine ARRMA replacement component.
- Vehicle, drivetrain housing, motor, ESC and installation tools are not included.
Shipping info
Orders are shipped Monday to Friday only. Orders placed on Fridays or over the weekend may ship the following Monday. We do not ship on public holidays.
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Additional delivery notes
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Additional Information
Our messages are monitored Monday to Friday, 10:00am - 5:30pm (Brisbane time). We are closed on public holidays. Messages received outside these hours will be responded to the next business day.
All orders are shipped via Australia Post. Dispatch occurs Monday to Friday only. Orders placed on Fridays, weekends, or public holidays will be shipped the next business day.
Accepted Payment Methods
Immediate payment is required upon selecting "Buy It Now" or upon checking out through the cart.
We accept payment via All Major Credit Cards (Visa, Mastercard, AMEX, Discover), Google Pay, PayPal, & Apple Pay (on mobile & eBay App).
Thank you for shopping with us on eBay!
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