AS3 Performance Factory Series rear sprockets offer the best of both worlds: the toughness of steel and the lightness of aluminium. This makes them the ultimate long - lasting rear sprockets for your bike. The outer ring, crafted from hardened steel with a nickel coating, lasts up to 3 times longer than an aluminium sprocket. The inner ring, made of aircraft - grade 7075 - T6 aluminium, is up to 50% lighter than a standard steel sprocket.
**Teeth**: 51
**Compatibility**: Fits 2021 - 2023 Fantic XX 125, 2021 - 2023 Fantic XE 125, 2022 - 2023 Fantic XX 250, 2022 - 2023 Fantic XXF 250, 2021 - 2023 Fantic XEF 250, 2022 Fantic XXF 450, 2022 - 2023 Fantic XEF 450. Note: Will not fit the XEF 250 Trail.
**Features**:
- The hardened steel outer ring outlasts aluminium sprockets by up to 3 times.
- The aircraft - grade 7075 - T6 aluminium inner ring is up to 50% lighter than steel sprockets.
- It's less likely to bend or get damaged compared to aluminium sprockets, perfect for enduro riding.
- Comes with an anodised finish and AS3 Performance branding.
- Manufactured by one of the world's leading sprocket makers.
- Tested on some of the world's toughest sand tracks.
- A UK - based company offers a 12 - month warranty.
- The sprocket you receive will be exactly the same style as shown in the picture.



Using this AS3 Performance Factory Series rear sprocket is straightforward. First, make sure your bike is one of the compatible Fantic models as listed. Then, carefully install the sprocket following the standard procedures for sprocket installation on your bike. When riding, you'll notice the difference in performance right away due to its light weight and durability.
As for maintenance, it's a good idea to clean the sprocket regularly, especially after riding on dirty or sandy tracks. You can use a mild cleaner and a soft brush to remove dirt and debris. Check the sprocket for any signs of wear or damage from time to time. If you spot any issues, like a bent tooth or excessive wear, it might be time to replace it.
Remember, this sprocket is not designed to fit the XEF 250 Trail, so always double - check your bike model before installation. With proper use and maintenance, this sprocket will serve you well for a long time, thanks to the 12 - month warranty provided by the UK company.