Apico Evolite Rear Sprocket - Yamaha YZ125 YZ250 WR125 Up to 1998 - Blue - 48T
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Product Information
Full details
The Apico Evolite Rear Sprocket is designed for motocross, enduro, and trials riders looking for a lightweight, durable, and stylish performance upgrade for their Yamaha motorcycles. Engineered from high-quality 7075 aerospace-grade aluminum, this sprocket provides excellent strength-to-weight performance and a factory-team aesthetic, though it requires regular maintenance common to high-performance aluminum components to ensure maximum longevity.
All features
| Model Part Number | BN3048TBLUE |
|---|---|
| Brand | Apico |
Extended Product Information
FAQs
Is this sprocket compatible with all Yamaha bikes?
No, it is specifically designed for Yamaha YZ125, YZ250, and WR125 models manufactured up to 1998.
What material is this sprocket made from?
It is CNC machined from 7075 aerospace-grade aluminum.
Does it come with new bolts?
No, it is designed to use your motorcycle's existing OEM mounting hardware.
How do I clean the dirt groove?
Use a soft brush and mild degreaser during your routine bike wash to clear out any packed mud or debris.
Is aluminum as strong as steel?
While 7075 aluminum is incredibly strong and lightweight, it will naturally wear faster than hardened steel, making it ideal for racing applications where weight saving is a priority.
Troubleshooting
Increased chain noise after installation
Check the chain alignment and tension. Ensure the chain is not worn, as a new sprocket paired with an old, stretched chain will cause noise and accelerated wear.
Visible wear on teeth after short period
Verify that your chain is properly lubricated and that the chain tension is not too tight, which can cause excessive friction on aluminum.
Pros and Cons
Pros
- Lightweight 7075 aluminum construction
- Self-cleaning dirt groove design
- Easy installation as an OEM replacement
- Professional anodized blue finish
- Increased sprocket and chain lifespan
Cons
- Aluminum is less durable than steel over long-term extreme use
- Requires frequent chain tension checks
- Specific to older Yamaha models up to 1998
Setup, Compatibility & Care
Installation of the Apico Evolite Rear Sprocket is straightforward as it is designed to match OEM specifications for Yamaha YZ125, YZ250, and WR125 models produced up to 1998. To install, remove the rear wheel, unbolt the old sprocket, and attach the Evolite unit using your original hardware. Ensure the sprocket bolts are torqued to the manufacturer's recommended settings. For long-term care, regularly inspect the teeth for hooking or wear, clean the dirt groove during your post-ride wash, and always check that your chain slack is within the manual's specifications to prevent undue stress on the aluminum teeth.