Apico Front Sprocket - KTM SX 85/105 - Husqvarna TC85 - Gas Gas MC85 - 14T

The Apico Front Sprocket is part of the latest performance motocross, enduro, and trials motorcycl...

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GhostBikes.comApico Front Sprocket - Ktm Sx 85/105 2003-24, Husqvarna Tc85 2014-24 - 14T
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Product Information

Full details

The Apico Front Sprocket (A55 428 14SL) is designed for motocross, enduro, and trials riders who need a reliable, cost-effective replacement for their KTM, Husqvarna, or Gas Gas motorcycles. Engineered as a high-quality alternative to original equipment, it ensures consistent power delivery and durability across demanding terrain. While it provides an exact fit for specific 85cc and 105cc platforms, users should verify their chain pitch requirements before installation to ensure full compatibility with their specific drive system.

All features

Model Part NumberA55 428 14SL
BrandApico

Extended Product Information

FAQs

Is this sprocket compatible with a 520 chain?

No, this specific part number (A55 428 14SL) is designed for a 428 pitch chain. Do not attempt to use it with different chain sizes.

Does this include the locking clip?

The product is the sprocket itself. It is recommended to use the existing factory retainer or replace the clip if it shows signs of wear.

How often should I replace this sprocket?

Replace it when you notice the teeth starting to hook, thin out, or show signs of missing material, typically when installing a new chain.

Can I use this on a bike not listed in the compatibility guide?

Only use this on the listed models, as the spline count and dimensions are specific to those manufacturer hubs.

Does the sprocket have a specific orientation?

Yes, ensure the flat side and the offset match the original OEM sprocket removed from your bike.

Troubleshooting

Excessive noise from the front sprocket area

Check chain tension and alignment. Ensure the sprocket is fully seated and the retaining clip or bolt is secure.

Chain jumping or skipping

Inspect both front and rear sprockets for worn teeth. If the teeth are hooked, replace the chain and sprockets as a matched set.

Pros and Cons

Pros

  • Exact fitment for specified KTM, Husqvarna, and Gas Gas models
  • High-grade steel construction for long-term wear resistance
  • Cost-effective alternative to OEM parts
  • Easy to install with standard shop tools

Cons

  • Specific to 428 pitch chain systems
  • Requires regular maintenance and lubrication for peak longevity
  • Compatibility limited to 85cc/105cc model ranges

Setup, Compatibility & Care

To install, ensure your motorcycle is secured on a stand and remove the sprocket cover. Use the appropriate circlip tool or retainer bolt wrench to swap the old sprocket with the new Apico unit, ensuring the flat side faces the correct orientation specified by your service manual.

Compatibility: This part is compatible with:

  • KTM SX 85/105 (2003-2024)
  • Husqvarna TC85 (2014-2024)
  • Gas Gas MC85 (2021-2024)

Care: Regularly inspect the teeth for signs of hooking or excessive wear. Always maintain proper chain tension as per your owner's manual to prevent premature sprocket fatigue, and clean the drive assembly after muddy or sandy riding conditions to prolong the life of both the sprocket and the chain.

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