BOYESEN REEDS 624 YZ250 YZ490

Improves throttle response and fuel economy, enhances acceleration and top-end speed

Revolutionary dual-stage reeds outperform and outlast any stock reed

Yamaha

WR500 1992 - 1993

YZ250 1984 - 1988

YZ490 1984 - 1990

Part No. 05-624 (phoenixmotos.com)