Stage6 Piston (Size B) 50mm Big Streetrace 88cc AM6 / Derbi — Replacement Piston High-performance replacement piston engineered for Stage6 Streetrace 88cc cylinder kits.

When power drops or seizure occurs, this OEM-matched spare restores full performance. Identical specification to factory Streetrace components.

Pair with fresh gaskets for optimal results

• Diameter : 50mm
• Classification : Size B
• Piston rings : 2x
• Pin diameter : 12mm
• Circlips included