1. Soft entry eliminates abrupt changes in chassis dynamics.

2. Progressive rate allows for more consistent performance at different entry/exit speeds.

3. Speedthane has much better durability and consistency over time.

4. Improved consistency from part to part.

5. Easier to install, and more secure when installed.

6. 3 stages of increase available, the most tunable product available.

7. Full coil wrap reduces spring sag due to coil bending.

8. Reduces Wheel Hop by: allowing a softer spring which will rebound less.
     a. Start with a softer spring ( ex. 250 lb/in).
     b. Increase system compression with 1 or 2 spring helpers ( ex. 300lb/in).
     c. System rebounds as a 250lb/in system.
     d. Speedthane also has great damping, so vibration is also absorbed.

8. Tight off:
     a. Lower rate of LR spring (so it rebounds less to right front).
     b. Install Speedthane in LR which will work in compression not rebound.

9. Loose off: install in LR to load LR and tighten car upon acceleration.

10. Still fixes all those well known tight and loose problems, JUST BETTER.