Genuine GasGas Rear Sprocket Protector, also known as Shark Fin!
This is the later design and made from a more durable plastic.
Fits the following trials models from 2004 onwards:
- TXT Pro 125/200/250/280/300
 - Raga 125/250/280/300
 - Racing 125/250/280/300
 - Factory 125/250/280/300
 - Contact 250 2015
 - School 125
 
Does not include any fixing screws.