FRESCO Raw Expansion Chamber - Steel Shot-peening eliminates residual stresses and

Shot-peening eliminates residual stresses and smoothly blends the rod forging surfaces

without interfering with your driving

Forged from one piece for better resistance

SX or enduro

Maximum power transfer

FRESCO Raw Expansion Chamber - Steel Shot-peening eliminates residual stresses andThe Raw expansion is made of thick sheet steel. This feature provides greater protection in the most exposed parts to damage and maintains a good sound to the exhaust system. Optimized development to reduce bulk and keep the expansion pipe very close around the engine. For the Enduro version, the expansion softens the engine output without penalizing the maximum power. Compatible with the original silencer.