BILSTEIN "RSR" STRUTS / SHOCKS INDIVIDUAL fits '72-'89 911 all and 911 Turbo with "A" or "S" Caliper.
161/160 valving with spindle raised 12mm. 220/110 valving with spindle raised 19mm.
Both require 8" x 2-1/4" springs.
Rear Shocks: Available in either of the two configurations:
Available in 180/170 "Racing RSR" valving. Available in 220/180 "Racing 934" valving.
Uses 9" x 2-1/4" springs.