Core RC have introduced new Progressive Big Bore Springs for 1/10th Off-Road. These high quality precision made springs allow the car to float over bumps but not roll too much during cornering. The consistent wire diameter means that the characteristics of each spring in the range is similar, giving a consistent performance across the range. The spring stiffness increment between springs is very small, allowing fine adjustment of the suspension.

See: Schumacher

  • Constant Wire Diameter
  • Close Rate Increment
  • Easy Identification
  • Black Coated
  • Precision Ground Ends
  • Available as pairs or tuning sets of 5 pairs.


To enable the Big Bore Springs to be used on small bore shocks Core RC have release 2 optional converters for the top of the spring, enabling better seating of the spring. The bottom of the spring fits regular small bore shock bottoms.