These cushion subs are hard to get in this condition and this one is selling way below replacement cost. This Foremost cushion sub had done 500 hours from new and recently it was fully stripped with new seals fitted and appears to be in excellent condition. Please see the full Foremost PDF on this listing to see the specifications.
Threads are – 6 and 5/8 API Regular
Length of sub uncompressed – 850 mm long
Total width of sub – 450 mm