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The Cobra HeadMD plate’s objective is the elimination of a good portion of the snowmobile’s darting. Moreover, its procedure requires less friction between the snowmobile and the ground than the one used by its counterpart, the dual carbide runner.
There is a Cobra HeadMD for each type of driving:
Conventional
Basic drive, easily comparable to a family outing.
Recommended Cobra HeadMD: 4 inches carbide. Look for parts number ending by -04 (ex.: B08-220-04).
The exception: the B08-220 has 8 inches of carbide, but the angle formed by their point is 90°, which makes it perfect for conventional and intermediary driving.
Intermediary
A type of drive somewhat more aggressive than the simple unorthodox escapade on a trail yet without being typically sports-like.
Recommended Cobra HeadMD: 6 inches carbide. Look for parts number ending by -06 (ex.: B08-220-06).
The exception: the B08-220 has 8 inches of carbide, but the angle formed by their point is 90°, which makes it perfect for conventional and intermediary driving.
Aggressive
A veritable sports-like drive.
Recommended Cobra HeadMD: 6 or 8 inches carbide. Look for parts number ending by -06 or -08 (ex.: B08-220-06).
Extreme
As its name indicates, this type of drive is reserved for professionals. High speeds and narrow turns are the norm.
Recommended Cobra HeadMD: 8-10 inches carbide. Look for parts number ending by -08 or -10 (ex.: B08-220-08).
The more aggressive the drive, the more the snowmobile operator will expect enhanced surface adherence from the snowmobile. As the operator increases his speed, his need for added friction with the frozen ground in order not to skid out of control while negotiating turns will also increase.
Understand how it works
Each product possesses different characteristics, allowing it to be self-sufficient and adequate for all type of driving habits. Among these, we find the square or diamond-shape carbide stopper’s length, the angle subsequently formed by the carbide’s tip added to the total length of the carbide on the runner.

The length of the stopper generally measures between 1/8” and 3/16”. Extending its length will increase the regular runner’s resistance. However, since this procedure requires an additional amount of carbide, runners equipped with 3/16” stoppers will be more expensive.
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