Factory Fatty Steel Exhaust Manifold

The Factory Fatty exhaust manifold widens and smooths the torque curve while increasing power across the entire RPM range, offering more low-end, mid-range, and high-end power, with an enhanced over-rev capability.

Construction:

• Steel pipe body made from 20 gauge steel: lightweight and durable.
• Header section made from 19 gauge steel: thicker for heat and pressure resistance.
• Hand-stitched welds for smooth exhaust flow.

Important note: It does not comply with FIM noise regulations for 2025.

Suitable for: BETA RR 300 (13-19).