ProTek RC Samurai RM.1, RM, S03 & R03 Low Speed Needle O-Ring (2)

RM, S03 and R03 Carburetor Restrictor. Available in 6mm through 8mm diameters, ProTek R/C carb restrictors are an excellent way to tune the power delivery of your Samurai 321B for any track ...

for use with the RM.1, RM, S03 and R03 Nitro Engines. The wrist pin is the small pin that goes through the piston to attach the connecting rod. You will need wrist ...

Carburetor. Package includes one replacement factory assembled S03 carburetor. This can also be used with the Samurai R03 .21 engines as a tuning option when increased runtime and smoother power delivery is needed. ...

Engines High Speed Needle O-Rings. These are compatible with the REDS R5, R5C, R5T and R5TE engines. REDS engines use a dual o-ring needle, with a red o-ring in the upper position, ...