Complete Exhaust Line CROSS HM - PRO by Yasuni

The Yasuni Cross HM-PRO is a complete expansion chamber exhaust system, handcrafted for engines around 70cc and suitable for 50–75cc. It optimises response and power across a wide usage range, making it ideal for demanding off-road conditions as well as dynamic urban riding.

Design and Materials

• Expansion chamber system with hand-welded cones for effective flow and optimised engine response.
• 28 mm cylinder collar for a precise fit to compatible cylinders.

Usage and Performance

• Usage range 50cc – 75cc, specifically designed for 70cc engines for targeted compatibility.
• Power 18–23 hp depending on cylinder configuration and timing, useful for assessing compatibility with your engine setup.
• Torque 17 Nm, contributing to strong acceleration and better responsiveness.

Practicality and Features

• Right-side outlet, facilitating integration into modern chassis designs intended for right-side exhaust.
• Weight of 3.1 kg, making handling during installation and maintenance easier.

Advantages

• OEM Reference TUB233TD-D72-PRO
• Fully road legal

Examples of Compatible Motorcycles

• SHERCO 50 SM-RS (2026)
• SHERCO 50 SM-R (2026)
• SHERCO 50 SE-RS (2026)

Complete list of compatible motorcycles available in the dedicated section below