PUSH Industries VTX Rear Shock - Standard 230 x 60-65 mm B-Tune 525 - 700 lb/in Springs MTBPUSH Industries VTX Rear Shock Standard 230 x 60 65 mm B Tune 525 700 lb in Springs (MTB). The Push Industries VT X rear shock is designed to offer plushness for the downs and efficiency for the ups. Features such as Ascend Mode Hydraulic Bottom Out and Travel Adjustment provide better traction and better bump sensitivity without comprising how your bike climbs. Mount Kit and Spring sold separately. With Ascend Mode a simple flip of the lever will you