The .21 RZ - custom
engineered for serious racers.
- Pressure regulation
system increases transitional throttle response.
crankshaft design blends engine performance
ingenuity and high-tech CNC machine work.
- Polished intake
ports allow smoother air flow.
- Custom shaped
piston reduces weight for quicker acceleration
and better cooling.
- Con rod features
lighter, more durable bushing material.
- Crankcase backplate
features an O-ring for a better seal.
RZ performance features:
- Insulating thermal
plastic ring on carb mounting helps to hold
settings and simplify tuning.
- Large flow-thru bar
stock aluminum cooling head is standard.
- Bearings have
rubber seal and larger balls for durability.
- Cylinder features
hard chrome-plated brass sleeve (ABC).
- Carburetor stop
prevents the rotor from sliding too far.
- Mounting hole
pattern matches RX Series engines for easy