They are EN13594: 2015 CP certified

Users who want to simplify everyday life with a magnetic card wallet directly on mobile - With both safety

For Yamaha models

25 | Inner_diameter: ø 132 | Number_of_holes: 5 | Outer_diameter: ø 310 | Thickness_mm: 5 mm

they also come in two sizes to fit almost any rim on the market

NARAKU CYLINDER KIT 155CC NK600.50F gas-gas-ec-250-racing-250-2017-esi9156802 They are EN13594: 2015 CPBig Bore cylinder Kit for Yamaha Cygnus 5ml Engines, The Highlight of This Cylinder Kit is the Forged Piston for Increased Durability and Reduced FRICTION VALUES AND THE RAISED PISTON SKIRT PROVIDES BETTER COMPRESSION, THE BORELEL, KITPRAPS 59MM, KITSURES 59MM, KITE COMPREST Clips and Required Top End Gaskets, Any Replacement Parts Needed For This Kit Can Be Ordered Below