spark force full exhaust system for yamaha BS90 higher block stiffness and confidence

higher block stiffness and confidence to the rider when cornering

This plug covers the unused seat mounting hole in the rear fender when converting to a solo seat setup

These 13 1/2 Skull bucket helmets are old-school cool

1984 GPZ - 550cc

spark force full exhaust system for yamaha BS90 higher block stiffness and confidenceSpark Force Full Exhaust System for Yamaha Take your Yamaha's performance to the next level with the Spark Force Exhaust System. Developed for top racing teams and tested on world famous tracks, this system delivers maximum power for both professional and amateur riders. You get the perfect balance of weight reduction, performance and pure racing sound. Features: Race proven full exhaust system AISI 304 stainless or titanium collector Lightweight