• Kevin Rumley purpose built variable body springs specifically for dirt Late Models
• Designed to provide optimized performance and consistency that has been tested and proven by some of the most successful teams in the industry
• Manufactured with best possible materials for strength, durability, and lightness
RR-2 OR RR-3
I appreciate your interest in offering more detailed information about our Bilstein RR-2 and RR-3 Springs for the Dirt Late Model market. Below is a breakdown of their design and performance characteristics:
Bilstein RR-2 Spring
- 10” tall, 250 lb/in rate spring designed to replicate a 10” 250 lb/in spring with two spring rubbers installed.
- Maintains a 250 lb/in rate until it reaches 420 lbs of load (spring height: 8.32”), ensuring no progression before the install (static) height.
- Once compressed further, the spring’s progressive characteristics begin:
- At 6.82” height (1.5” of travel), the load reaches 940 lbs (34% progressive increase).
- At 6.32” height (2” of travel), the load increases to 1120 lbs (29% further progression).
- Optimized for RR travel in a Dirt Late Model, focusing on 1.5” to 2” of travel load to enhance side bite at corner center.
Bilstein RR-3 Spring
- Designed with the same concept as the RR-2 but replicating a 10” 250 lb/in spring with three spring rubbers installed.
- Load progression:
- At 6.82” height (1.5” of travel), the load reaches 1120 lbs (45% progressive increase).
- At 6.32” height (2” of travel), the load increases to 1380 lbs (42% further progression).
Both springs are engineered specifically for Dirt Late Model RR travel, ensuring optimal performance and cornering stability.
