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Get Your High Quality Nitro-Prop Gas filled struts here!
WHY PAY MORE?
Unlike Many Sellers we carry an extensive line of end fittings, mounting brackets and ball studs for our struts
MORE Gas springs listed in our Store
This Listing is a REPLACEMENT SET
for Knaack Storagemaster Chest ' OEM part # KN977-2PK
Example Box Models, 89, 90, 91
TIP: when selecting a replacement unit always compare your old unit in both length and pressure to insure proper fit
You are buying Nitro-Prop brand Struts
Fully extended - 17.2 inches Fully retracted -10.2 inches (center to center of the ball socket)
Diameter rod = 8mm / tube = 18mm
End thread = M6 x 1, Ball size =10mm
You are bidding / buying (2ea) gas spring / shock / strut Manufactured for Nitro-Prop Strut and Spring (NP-REP-977-8) this unit is totally self-contained, hermetically-sealed, a hydro pneumatic linear actuator containing pressurized nitrogen gas, which provides the output force.
This unit and comes complete with threaded removable 10mm nylon ball sockets both on the rod and tube ends (if you are in need of mounting brackets see our selection listed in the store)
The shipping, handling and insurance is a set cost of $12.00 (USPS or FedEx shipping to the Lower 48 states USA ONLY) Shipping and Handling to all other parts of the world please e-mail us for a price quote and to be sure we can ship to your location.
Note: for best results replace both struts (when 2 struts are used)
ALWAYS install with rod down (your struts will last much longer here's the reason all struts contain a bit of oil / that is what causes the damping effect towards the end of the stroke , this oil also lubricates the piston, installing the rod down keeps the oil atop the piston!)
If you do not find the size, length or configuration you are in need of please e-mail us as we have over 100 combinations to choose from
Thank-you for your interest
Watch for MORE items from RV-Trader to come!