Apico Front Sprocket - A32 520 15SL
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Product Information
Full details
The Apico Front Sprocket (A32 520 15SL) is an essential upgrade for motocross, enduro, and trials riders looking for a reliable, factory-grade replacement for their drivetrain. Designed to meet or exceed OEM specifications, this sprocket offers exceptional durability and precise fitment for a wide range of Kawasaki and Yamaha off-road motorcycles. While it is built for high-performance riding, riders should ensure they verify their specific chain pitch (520) and tooth count requirements before installation to maintain proper drivetrain harmony.
All features
| Model Part Number | A32 520 15SL |
|---|---|
| Brand | Apico |
Extended Product Information
FAQs
What does the 520 in the part number refer to?
The 520 refers to the chain pitch, which is the internal width and distance between the pins of the chain. You must use a 520-pitch chain with this sprocket.
Will this fit a 2020 Yamaha YZ450F?
Yes, the A32 520 15SL is compatible with the Yamaha YZ450F within the 1999-2023 range specified by the manufacturer.
Do I need to replace my rear sprocket when installing this?
It is highly recommended to replace the chain and both sprockets as a set to prevent uneven wear and premature failure of the new components.
Is this sprocket made of aluminum or steel?
Apico front sprockets are typically manufactured from high-tensile steel to ensure the durability required for countershaft applications.
How often should I check the teeth for wear?
You should inspect the teeth for sharp points or 'hooking' during every routine air filter service or chain cleaning session.
Troubleshooting
Excessive chain noise after installation
Check your chain tension. An over-tightened or excessively loose chain will cause noise and premature wear on the sprocket teeth.
Sprocket feels loose on the countershaft
Verify that the sprocket is the correct part number for your model and inspect the output shaft splines for damage or excessive wear.
Chain jumping off the sprocket
Ensure the sprocket is properly aligned and the chain is not stretched beyond its service limit. Check the chain guide and sliders for wear.
Pros and Cons
Pros
- Matches or exceeds OEM specifications
- High durability under racing conditions
- Extensive compatibility across popular dirt bike models
- Excellent value compared to original manufacturer parts
Cons
- Requires specific 520 pitch chain compatibility
- Installation requires specialized tools to torque to specification
- Limited to specific Kawasaki and Yamaha model years
Setup, Compatibility & Care
To install, remove the countershaft sprocket cover, secure the rear wheel to allow for chain removal, and loosen the axle nuts. Remove the old sprocket and inspect the splines on the output shaft for any signs of wear. Slide the new Apico sprocket onto the shaft, ensuring it seats fully. Always use a new tab washer if required by your specific bike model and torque the retaining bolt to your factory service manual's specifications. Maintenance-wise, keep the chain properly tensioned and lubricated with high-quality off-road chain wax to maximize the lifespan of the sprocket teeth. Regularly check for 'hooking' or sharp edges on the teeth after heavy riding sessions.