KRC Pro Series R-LOK Serpentine Crank Pulley Only


• 2-piece inter-locking R-LOK modular system design allows you to change drive pulley diameter quicker at the track

• R-LOK crank system allows for an endless amount of crank pulleys to be stacked and locked together providing a more positive and lightweight drive than a conventional mandrel system

• R-LOK system is more concentric and truer than the conventional pin-drive systems

• Crank adapter fits all the pulleys so it reduces cost of replacing damaged pulleys

• Pulleys are stackable and will adapt to pin drive Gilmer and HTD pulleys


4.0" pulley - 1:1 Setup (KRC38240000)

3.5" pulley - 15% Reduction (KRC38235000)

3.0" pulley - 25% Reduction (KRC38230000)


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KRC Power Steering
KRC Pro Series R-LOK Serpentine Crank Pulley Only
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