Wiseco forged piston:

Wiseco forged pistons (high-quality steel) are fitted as standard to a large range of motorbike brands.
The manufacture and anti-friction treatment of forged Wiseco pistons give them a longer lifespan, better engine response and reduce the risk of seizure.
The Wiseco forged piston is an essential component for maintaining and repairing motocross bikes.
Three-ring piston
Standard compression
Replacement piston ring product no. YC7700
The piston kit includes:

• 1 piston diameter (76.95 mm)
  
• 1 gudgeon pin
• 1 set of piston rings
• 2 circlips

(Actual product may differ from photo)