Super-compact backside upright produced from TRICKY super-tough, high-tech composite item features multiple set-up options for upper & lower roll facilities. Upper roll center is adjustable via camber linkage & shims up/down & in/out. Lower roll center is adjustable via eccentric inserts in 9 different positions up/down & in/out. The race-proven, 2-piece design enables fine-adjustment and increases durability additionally performance. Molded from ROUGH composite this upright works for all track conditions, specially low- and medium-traction tracks. The upright fits on both remaining & right edges. Is employed using the Must be used with all the current #325324, #325325 or #325326 drive shafts.