Apico Rear Sprocket - 47T

The Apico Rear Carbon Steel Sprocket is part of the latest performance motocross, enduro and trial...

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GhostBikes.comApico Light Rear Carbon Steel Sprocket - Kawasaki Kx 125/250 1980-2008, Kxf 250/450 2004-23 - 47T
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Product Information

Full details

The Apico Rear Carbon Steel Sprocket is designed for serious motocross, enduro, and trials riders who require a durable, high-performance replacement for their stock equipment. Engineered from aerospace-grade C45 carbon steel, this sprocket offers a perfect balance of strength and weight reduction for competitive use; however, riders must ensure their chain pitch matches the specific sprocket teeth count before installation to maintain optimal drivetrain efficiency.

All features

Model Part NumberBN20S 47T BK
BrandApico

Extended Product Information

FAQs

Is this sprocket suitable for street use?

While designed for motocross and enduro, the high-grade carbon steel construction is durable enough for occasional dual-sport use, provided your chain remains well-lubricated.

Does it come with mounting bolts?

No, this product includes the sprocket only. It is recommended to use fresh sprocket bolts or high-strength thread locker on existing hardware.

What is the benefit of the Cataphoresis finish?

This coating provides an advanced anti-corrosive barrier, ensuring the sprocket maintains its factory look even when exposed to water, mud, and chemical cleaners.

Will this fit a 2007 Suzuki RMZ250?

No, this specific part is compatible with the Suzuki RMZ250 model years 2004-2006 only.

Should I replace my chain when installing a new sprocket?

It is highly recommended to replace the chain and both sprockets simultaneously to ensure even wear and prevent premature damage to new components.

Troubleshooting

Increased chain noise after installation

Check that the chain is correctly tensioned and that the sprocket is aligned perfectly with the countershaft sprocket.

Sprocket appears to have minor surface scratches

Small marks are common during break-in; ensure your chain is properly lubricated to minimize metal-on-metal friction.

Difficulty fitting the sprocket on the hub

Verify that all debris is removed from the hub mounting surface and confirm the MPN matches your bike's specific year and model.

Pros and Cons

Pros

  • Superior durability compared to standard aluminum alternatives
  • Excellent anti-corrosion properties from the electro coating
  • Effective debris management with integrated mud grooves
  • Precise OEM-standard fitment for a wide range of Kawasaki and Suzuki models

Cons

  • Heavier than high-end titanium or lightweight aluminum racing sprockets
  • Requires proper chain tension management for maximum longevity
  • Specific compatibility limited to select Kawasaki and Suzuki models

Setup, Compatibility & Care

Installation should be performed by aligning the sprocket bolt holes exactly with the rear hub mounting points. Always ensure that the mounting hardware is tightened to the manufacturer's specified torque settings to prevent loosening during operation. Compatibility covers various Kawasaki models including the KX125, KX250, KX250F, KX450F, KX250XC, and KX450XC, as well as the Suzuki RMZ250 (2004-2006). To care for the unit, regularly inspect the teeth for signs of hooking or excessive wear. Clean the sprocket after muddy rides with a non-caustic degreaser and apply a high-quality chain lubricant to prevent rust, although the Cataphoresis finish significantly mitigates corrosion risks.

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