Module Monster Shield MTB Downtube Protector Kit - 5 Piece Weve raised the bar on MTB Frame Protection! The Monster Shield MTB Downtube Protector Kit is a modular 5pc kit which includes two 8x2 Downtube Shields and three 2x1 3/8 Frame shields. With the modular kit you can optimize the protection for your particular frame. Perfectly sized for MTB downtubes offering protection from rocks, sticks and unruly tailgates! Protect your expensive frame from chips and scratches to keep your frame looking new, mile after mile. Made in America, our domed frame protectors feature polyurethane which will actually absorb impact and rebound to its original shape making it more scratch resistant than most metals. With just the right amount of flexibility and super strong adhesive, our protectors fit to your frame and stay in place.