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Half Scale Dragsters CP-105K

Polar Jr Clutch Assembly & Weight Kit Polar Jr Clutch Assembly

Half Scale Dragsters CP-105K

449-CP-105K

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Estimated ship date 08/25/17 if Ordered Today
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Half Scale Dragsters CP-105K Polar Jr Clutch Assembly & Weight Kit Polar Jr Clutch Assembly $743.98
Polar Jr Clutch Assembly & Weight Kit
  • Polar Jr Clutch Assembly
  • Polar Clutch Weight Kit

  • Half Scale Dragsters CP-105K Details

    Complete Polar Clutch System

    Polar Jr Clutch Assembly
    The clutch that started the Jr Dragster performance revolution. Still used by many on cars that run from the 12's to ones in the 7's because of its adjustability. There are many copies on the market, but the original is still the best.
    Supplied with:

  • Ramps: 18-28-22
  • Primary Spring: Purple
  • Secondary Spring: Yellow
  • Weights: 7 Grams
  • Helix: 34 Degree


    Polar Clutch Weight Kit
    This is the simple way to change the RPM's that your motor turns. By adding or subtracting arm weight, you can change the engagement rate of the clutch> By changing the weight on the arm, you change the rate of load on the engine which will control the engines total RPM.

    Kit includes 6 each of the following weights:
  • 5 Grams
  • 6 Grams
  • 8 Grams
  • 9 Grams

  • Specifications:

    Manufacturer's Part Number:
    CP-105K

    This is the first clutch that allowed Jr Dragsters to run into the 7 second zone. Designed for better consistency and faster reaction time, this clutch is fully tunable and has been updated thru the years. Available as either the Polar Jr or the Super Pro. System includes primary, secondary clutch and belt.
    You can modify this clutch to fit the car, motor, and child by changing ramps, weights, springs, and helix.

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