The APS - Additional Progressive Spring set is designed for use in the Awesomatix A800R touring car.Progressive conical tapered springs of the APS set press on the lower suspension arms and add a progression into the suspension spring rate. Test results showed more consistent laptimes with improved overall feeling on the low-med grip asphalt and carpet tracks.Two types of springs are included in the APS set:SPR-P1 spring, adding ~13 gf/mm average suspension rate on the wheel and a slight progressionSPR-P2 spring, adding ~20 gf/mm average suspension rate on the wheel and increased progressionThe SPR-P1 spring is mainly recommended on the rear end of the car, while the SPR-P2 is recommended for the front end of the car.It's also possible to add only the progression into suspension rate without increasing the total average suspension rate. In that case you should soften the main leaf springs settings by 13gf/mm when using SPR-P1 and 20gf/mm in case of SPR-P2 usage.
