Gear 1157207 by Polini

Extended sixth gear Z26 designed for AM6 engines to lower the RPM in sixth gear. Made from alloy steel with precision machining for a positive engagement of the gears. Available in two diameters to fit different output shaft configurations.

Design and materials

• High-strength alloy steel providing good wear resistance for road and sport use
• High-precision machining suitable for AM6 engines for smoother gear shifts
• Manufactured in Italy, useful for identification and tracking of the part

Usage and performance

• Z26 ratio longer than Z25, reducing engine RPM in sixth gear for smoother high-speed riding
• Designed for road, sport, and competition setups to optimise transmission efficiency

Fit and size

• Two versions available Ø18 mm and Ø20 mm to match small and large output shaft bores
• Two non-interchangeable configurations; compare the product image with your motorcycle's output shaft before ordering

Advantages

• OEM reference 202.1433
• OEM reference 202.1434

Examples of compatible motorcycles

• VENT SKATE 50 (2026 - 50 cm3)
• SHERCO 50 SM-RS (2026 - 50 cm3)
• RIEJU MRT 50 SM TROPHY (2026 - 50 cm3)

Complete list of compatible motorcycles available in the dedicated section below