Below is a general manufacturer product group description. Please note the information below is not item specific. Item specifics are above in product details.

The NF210 coil spring features a tasteful drop, and produces the best overall ride quality and comfort for a performance lowering spring. The lowered stance of the NF210 gives the car an elegant pose, while the spring rates, which are only slightly raised (up to 5% over stock) retain factory ride quality settings.
This coil spring is extremely popular with luxury tuned vehicles, as well as those with larger diameter wheels that want to eliminate fender gap, but maintain excellent driveability while reducing the risk of damage to wheels that is associated with stiffer suspensions.
Comfort especially important on daily driven vehicles, and their passengers. The NF210 provides the best driving experience for all types of roads.
For those who demand the best comfort from a lowering spring.