Complete Exhaust Line CROSS HM - PRO by Yasuni

The Yasuni Cross HM-PRO is a complete expansion chamber exhaust designed for 70cc engines, handcrafted with welded cones. Its design aims to optimize power across a wide usage range (50–75cc) while facilitating integration with a 28 mm flange and a right-side outlet. Fully road-legal, it is suitable for both urban and off-road use.

Design and Materials

• Expansion chamber specifically designed for 70cc engines, ensuring targeted mechanical adaptation
• Handcrafted process with welded cones, optimizing flow efficiency and engine response
• 28 mm cylinder flange for a mechanical interface compatible with cylinders of the same diameter

Usage and Performance

• Power 18–23 hp depending on cylinder configuration and timing, delivering performance tailored to tuning
• Torque 17 Nm providing sensitive engine response at low and mid-range RPM
• Usage range 50cc – 75cc, suitable for engines and setups within this range

Practicality and Features

• Right-side outlet designed for coherent integration on modern chassis
• Weight 3.1 kg facilitating handling and installation of the exhaust

Safety and Standards

• Fully road-legal, usable on public roads
• Designed to meet the demands of rigorous off-road use and dynamic urban riding depending on vehicle configuration

Advantages

• OEM Reference TUB233TD-D57-PRO
• Universe: Urban, Supermoto, Enduro

Examples of Compatible Motorcycles

• RIEJU MRT 50 SM (2026)
• PEUGEOT XP6 50 SM (2026)
• RIEJU MRT 50 (2026)

Complete list of compatible motorcycles available in the dedicated section below