Heavy Duty, RR Torsion Arm, Offset 1-1/8", 7/8" x 11 1/2", 600cc micro sprint Tools Hyper Racing # 388-398

Hyper Racing # 388-398

0" hex (measured across the flats)

Specify in the Notes field at checkout if you want this rack to be the 2022 updated 3" offset rack

ARS 1074 Aluminum Shock is a 7" stroke

Heavy Duty, RR Torsion Arm, Offset 1-1/8", 7/8" x 11 1/2", 600cc micro sprint Tools Hyper Racing # 388-398Hyper Racing # 40 171HD Heavy duty 3 4" thick version of the standard version of the 40 171 torsion arm. Fits '07 and up Hyper 600cc on the right rear. 1" offset. This arm provides more offset to move the right rear bearing carrier out. This is generally needed for use with longer paddles (11" & 12" paddle for this arm). It also depends on which Jacob's Ladder frame tab hole it is mounted to. Redesigned in 2017. The X4, X6, & X7 Hyper rear torsion