NRP specialise in carburettor diaphragms, air cut-off valves [or coaster enrichment valves] carburettor overhaul kits and spares for all Japanese carbs. NRP manufacture and supply a large range of main diaphragms for Honda, Kawasaki, Suzuki, Yamaha, Triumph, Aprilia, Benneli, Bimota, Beta, Cagiva, Ducati and Sachs motorcycles, as well as Vespa, Hyosung, and other scooters, only available from us. We have been producing diaphragms since 1988, and take pride in not being constrained by genuine part supply. We are the only source of many discontinued parts for older models, at much more reasonable prices. We cover Mikuni, Keihin, Hitachi, Tokei and TK Kikaki carbs from 1970's to 00. Where as an original part the diaphragm is only available as a complete sealed unit, we offer a service where we refit a new diaphragm to your original slide. Where the original part can be improved to ensure long and trouble free service, this is incorporated into the design.