The Fast Adjuster V4.0 kit is designed to suit cadet and senior of 4 different kart brands. See list below. Cadet & Senior Arrow Deadly Monaco MGM The kit includes: 2 x V4.0 adjusters 2 x adjusting side plates All bolts, nuts, washers and accessories required for Fast Adjuster kit fitment Weight (no fixings): 473g (16.7oz) It is recommended that Fast Adjuster kits are used in conjunction with a secondary set of side plates, if you use seat stay/struts. This will achieve maximum efficiency when adjusting the seat position. All karts are based off current models as of 03/2021