The Optional Noise Damper (SS) for the Evolution Line for the Honda CRF250R/RX and CRF300R/RX was specially developed for use on racetracks where 109dB/A noise levels are required.

Tailor-made to fit the limited space available within the motorcycle, this system combines performance and durability for extreme conditions and the rigors of off-road racing. Constructed from lightweight, high-grade, premium titanium alloys, with different thickness in the sections to ensure perfect protection and to reduce overall weight, the system is 26.5% lighter than the stock...

COMPLETE CYLINDER KIT. CRF 400 R D.92 - Displacement 413 cc - Bore for stroke 92 x 62,1mm - Compresison ratio 13 : 1