1 kg over the stock exhaust

It is advised to set torque to its lowest setting for maximum product life

unit (see explanations above)

Iconic Dickies label on the chest

spark force full exhaust system for yamaha Fits:15-24 YZF R1 (stainless steel collector with Force Evo muffler) (GYA8881T) 1 kg over the stockSpark 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