The new Roto Grip Rumble is a great addition to the already highly talented line that roto grip has to offer.  The 55M soild reactive coverstock wrapped around the late roll 51 core adds another awesome option to the HP2 line.  I layed mine out with a 40x3 7/8x75 (Axis: 3 3/4 over, 7/8 up)  which gave me a nice predictable motion through the heads, with a smooth arc down lane.  This piece is a PERFECT compliment to its fairly angular brothers (Wrecker and Shatter). When the wrecker and shatter are too hard off the spot down lane, and youre looking for a similar motion without the sharp angle change, drill yourself a rumble.  Are you ready to rumble?

Erik Ramos
Storm/Roto Grip Staff