COG Step Chock Kit

Turtle Plastics

The Turtle Plastics COG Step Chock kit has everything you need to quickly stabilize a vehicle. The COG Step Chock uses a sliding wedge that travels on an incline for quick height adjustment and then locks in place to stabilize the vehicle. If you need a standard step chock simply remove the sliding wedge, flip the chock over and use it as a standard step chock.

The COG Step Chock Kit also includes Lock Blocks. Lock Blocks are 1”, 2” and 3” thick. Lock Blocks “Lego Style” face fits the base of the step chock to increase the height or can be used on the top of the sliding wedge. Lock Blocks can be used together with the COG Step Chock or separately. COG Step Chock Kits include storage/carry bags for easy storage and quick deployment.

  • The Yellow cribbing color has been discontinued by the manufacturer. 
  • All cribbing included in this kit will be Black in color.


COG Chock Specifications
Length 24 3/8"
Width 6 5/8"
Height 10 3/4"
Weight 22 lbs.
WLL w/o COG 3,750 lbs.
WLL w/ COG 6,000 lbs.

View Turtle Plastics Working Load Limit (WLL) Guide [PDF]


Lock Block Kit

(Contains 1 ea. of blocks listed below.  3 blocks per Lock Block Kit)

Thickness Length x Width Weight (lbs.) WLL (lbs.)
1" 9" x 9" 3 68,343
2" 9" x 9" 5
3" 9" x 9" 7


COG Kit Contents
Description COG Kit A (Qty.) COG Kit B (Qty.) COG Kit C (Qty.)
COG Step Chock 2 4 8
Lock Block Kit
3 6 12
Carrying Bag 2 4 8
Kit Weight (lbs.) 89 178 355


SHIPPING NOTE: Due to the size/weight of this product, shipping/truck delivery must be arranged by phone or email. You may complete your order online, however there will be no shipping charges displayed at checkout. A First Out Rescue specialist will contact you to make delivery arrangements and give you the final cost for your order including freight charges.

Grouped product items
SKU Product Name Qty
COGKitA COG Step Chock Kit A
COGKitB COG Step Chock Kit B
COGKitC COG Step Chock Kit C