Xray have a new progressive spring set for the XB808 off-road buggy available. The ultimate-match front and rear springs sport progressive characteristics for a soft initial feel and increasing hardness while the spring compresses. This makes for a sensitive damper behaviour but enough stiffness to retain a precise overall feeling. The springs are recommended for medium-high traction tracks, are available as a pair, are measured, controlled, inspected and matched to provide identical damping characteristics. The front progressive C=0.7-0.8 mimics a hardness 0.7 spring at the beginning of the compression and a hardness 0.8 spring at the end. The rear progressive C=0.5-0.6 behaves like a hardness 0.5 to hardness 0.6 spring.