from http://www.factorypipe.com/media/instructions/yamaha/701SJ03.pdf
Insert the Factory Pipe headpipe into the coupler. Use Windex or soapy water to help installation. Install the headpipe gasket, three 10 x 1.25 x 40mm bolts and 10mm lock washers (items #14,13,16). Loctite and torque to 30...