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POLARIS 120 REAR SHOCK KIT

Kraven

Well-known member
Lifetime Membership
Apr 11, 2009
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PARTS NEEDED

Start with a 77-78 Arctic Cat front ski shock, KIMPEX part # 08-114-14. approx $25.00 from mail order houses, Keep in mind that it's an oil shock, skinny shaft UP (fat body down) in order for it to work.

(1) 10.82" long 5/8" diameter steel shaft, threaded for 5/16" on the ends

(1) 5.28" long 5/8" diameter steel shaft, threaded for 5/16" on the ends

(3) 6" lengths of gas pipe (from the hardware store) serves as some 5/8" I.D spacers to center that shock, or you can use those 5/8" locking collars with a set screw holding 'em in place.

(4) 5/16" coarse thread bolts with flat washers and lock washers

(4) 5/8" I.D. flat washers to fit over the shafts and go up against the shock rubber eye mounts


INSTALLATION


Drill (2) 5/16"DIAMETER holes in the tunnel (just forward of the upper rear bogie wheels) as per pix posted below, make sure you're into the steel back plates and just clear the upper rear bogie wheels

Drill (2) more 5/16" diameter holes in the aluminum rails per pix posted below (APPROX 1" FORWARD OF THE EXISTING 5/16" RAIL holes = drilling approx 14" ahead of the rear axle)

DO NOT CUT/MODIFY the suspension swing arm. As long as you follow the placement of the holes as outlined above, the shock will clear, it's a little close, but still 1/4" + clearance.

TIP: I located and attached the upper shaft and shock first, then temporarily located the lower holes to check clearance prior to drilling.

The shock MUST be mounted with the shaft pointed up, as it's an oil shock, if mounted upside down, it will NOT work!

This kit works GREAT !!!!!!!!!!!!!!!!!

I believe www.recmotors.com wants $160.00 for the rear shock kit, looks amazingly similar to this one.

Hope this helps

120 DRILL ALUM RAILS.jpg 120 REAR SUSP SHOCK (1).jpg 120 REAR SUSP SHOCK (2).jpg 120 TUNNEL HOLES.jpg 120 TUNNEL HOLES #1.jpg 120 TUNNEL HOLES #2.jpg 120 TUNNEL HOLES #3.jpg 120 TUNNEL HOLES #4.jpg 120 TUNNEL HOLES #5.jpg 120 TUNNEL HOLES #6.jpg
 
Last edited:
M
Dec 30, 2022
1
0
1
Rice MN
PARTS NEEDED

Start with a 77-78 Arctic Cat front ski shock, KIMPEX part # 08-114-14. approx $25.00 from mail order houses, Keep in mind that it's an oil shock, skinny shaft UP (fat body down) in order for it to work.

(1) 10.82" long 5/8" diameter steel shaft, threaded for 5/16" on the ends

(1) 5.28" long 5/8" diameter steel shaft, threaded for 5/16" on the ends

(3) 6" lengths of gas pipe (from the hardware store) serves as some 5/8" I.D spacers to center that shock, or you can use those 5/8" locking collars with a set screw holding 'em in place.

(4) 5/16" coarse thread bolts with flat washers and lock washers

(4) 5/8" I.D. flat washers to fit over the shafts and go up against the shock rubber eye mounts


INSTALLATION

Drill (2) 5/16"DIAMETER holes in the tunnel (just forward of the upper rear bogie wheels) as per pix posted below, make sure you're into the steel back plates and just clear the upper rear bogie wheels

Drill (2) more 5/16" diameter holes in the aluminum rails per pix posted below (APPROX 1" FORWARD OF THE EXISTING 5/16" RAIL holes = drilling approx 14" ahead of the rear axle)

DO NOT CUT/MODIFY the suspension swing arm. As long as you follow the placement of the holes as outlined above, the shock will clear, it's a little close, but still 1/4" + clearance.

TIP: I located and attached the upper shaft and shock first, then temporarily located the lower holes to check clearance prior to drilling.

The shock MUST be mounted with the shaft pointed up, as it's an oil shock, if mounted upside down, it will NOT work!

This kit works GREAT !!!!!!!!!!!!!!!!!

I believe www.recmotors.com wants $160.00 for the rear shock kit, looks amazingly similar to this one.

Hope this helps
Do you know the length of the shock? I just did this to my grandson's sled and it now only has about half as much suspension travel as it had before and bottoms the shock out!
 
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