ProTek Declares New CR21 3-port .21 Off-Street Engine

ProTek pronounces new CR21 3-port .21 off-road engine that options the identical DNA because the profitable ProTek Samurai line, however the urged MSRP is below $300.

The CR21 incorporates a newly designed crankshaft to enhance engine response and a light-weight piston that additional assists with a crisp engine response on throttle enter. The combustion chamber design optimizes low to medium RPM ranges, excellent for newer racers, whereas nonetheless providing excessive efficiency output at excessive speeds for extra skilled drivers. And it’s simple to tune and stabilize with a 2-needle carburetor with 6mm and 7mm inserts obtainable.

ProTek RC Announces New CR21 3-port .21 Off-Road Engine

An “EBIS” model of the ProTek RC CR21 can also be obtainable at, that includes the engine break-in providers of RC racing and trade legend Adam Drake.


  • Displacement: 3.49cc
  • Bore: 16.27mm
  • Stroke: 16.8mm
  • Sensible RPM: 4,000-40,000
  • Most Output: 2.45ps/33,000 RPM
  • Weight: 381g
  • Included Customary Tools: T-P3 glow plug, orange 6mm venturi, yellow 7mm venturi, exhaust seal

The budget-friendly ProTek CR21 is now obtainable at or via your native monitor retailer or passion store.

For extra data on the ProTek RC CR21, click on the hyperlinks under:
ProTek RC CR21:
ProTek RC CR21 ‘Drake-In’ Break In Service supplied by Adam Drake:

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