TITANIUM steering stem nut. Part:51631-28000 Part:51631-31F00 4 pronged socket tool number: 09940-14911 The tool is made from stainless steel so will last a lifetime. Don’t use the tool on the swingarm lock nut because the prongs will snap off. The correct tool is available on the site M25 x 1.00mm thread type Fits: SV650 2008-2013 SV650S (up to 2002. Changes to the 2 washer version from 2003 onwards) 1981 GSX1100S Katana GSF400 1997 LS650 GSX1400 GSX-R600 (1997-2000) GSX-R750(1988-99) GSX-R1100 RF600 RF900 RGV250 VJ22 Aprilia part number: AP8203588
