Norwest first backed the Minnetonka, Minnesota-based company in 2008.
Shock Doctor offers products for hockey, football, baseball, basketball, soccer, martial arts and boxing, and lacrosse, amongst other sports.
Bregal managing partner Robert Bergmann said, “We see a great opportunity for Shock Doctor to continue to revolutionize the $9bn global market for performance and protective equipment with new, innovative, and disruptive products.
“Beyond entering new categories, the company should also benefit from overall market growth and an ability to acquire other industry participants.”
He added that research shows that “sports specialization is leading to higher injury incidence and thus greater focus on injury prevention” and parents and athletes have been increasingly willing to buy products to avoid or minimize injuries.
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