IFS sold in pairs, F/T and R/T sold individually.
IFS - Comfort 1.75" Velocity Series 7046077 - Use Stock Spring
IFS - Aggressive 2.0" Velocity Series 7045773 - Requires New Spring Part# 7045298-453 and new hardware 5136530 - 8 pcs, 5412290 - 4 pcs.
Front Track Indy SP - Comfort Velocity Series 7045430 - Use Stock Spring Part# 7045374-453
Front Track Indy SP - Aggressive Velocity Series 7045771 - Use Stock Spring
Front Track Adventure - Comfort Velocity Series 7045430 - Requires New Spring Part# 7045374-453
Front Track Adventure - Aggressive Velocity 7045771 - Requires New Spring Part# 7045374-453
Rear Track - Comfort Velocity Series 7045431
Rear Track - Aggressive Velocity Series 7045772