Super-compact backside upright made from TRICKY super-tough, high-tech composite item features many set-up alternatives for top & 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 various roles up/down & in/out. The race-proven, 2-piece design allows fine-adjustment and increases durability furthermore performance. Molded from HARSH composite this upright works for all track conditions, particularly low- and medium-traction songs. The upright fits on both staying & right edges. Is employed using the is required with all the current #325324, #325325 or #325326 drive shafts.