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: Honda, ATC250R, Engine, TRX250R, Engine, HPI Ignitions Description Description Non resistor spark plug cap. Related products EngineHonda TRX250R Top End Gasket Set HondaIntake 1987-89 TRX250R Stainless Steel Intake For 1987-89 TRX250R only. ExhaustHonda TRX250R Big Bore Pipe 350D LED 350D exhaust. For use with motor sizes of 330-390 For cross country, MX and trail riding applications. Price is for the pipe only. HondaTransmission & Clutch Hinson CR125 Fiber Clutch Plates Individual Plates sold individually.