Home / Honda / ATC250R / Engine / Spark Plug Cap Spark Plug Cap$10.00 Non resistor spark plug cap. Spark Plug Cap quantity Add to cart Categories: ATC250R, Engine, Engine, Honda, HPI Ignitions, TRX250R Description Description Non resistor spark plug cap. Related products ATC250RHonda TRX250R Transmission Shift Fork Kit For 86-89 TRX250R and 85-86 ATC 250R. Complete shift fork set. HondaTransmission & Clutch TRX250R Transmission Bushing Kit For 87-89 TRX250R. ExhaustHonda TRX250R LED Big Bore Silencer Round Small Body For motor sizes 330-430. Round muffler small body. For use with LED 350G, 350D, and Puma exhaust. ExhaustHonda TRX250R LED Big Bore Silencer Round Big Body For motor sizes 330-430. Round muffler big body. For use with LED 350G, 350D, and Puma exhaust.