Tuning Set of 8 pair fits screw-on type pistons that come on B6, B6D, B64, B64D. Also fits updated screw-on V2 shock shafts for use on B5, B5M, B5M Factory Lite, T5M, and SC5M. Precision CNC machined pistons with each pair in its own labeled Schelle mini snap case. Includes piston tuning guide, bevel piston instructions, and Kurt "Coach" Wenger's tips. The 8 pairs included are: (1.6) = 2 x 1.6 Flat (1.7) = 2 x 1.7 Flat (1.4) = 3 x 1.4 Flat (1.6B) = 2 x 1.6 Bevel (1.7B) = 2 x 1.7 Bevel (1.4B) = 3 x 1.4 Bevel (1.5B) = 3 x 1.5 Bevel (6-7Sp) = 1 x 1.6 and 1 x 1.7 Bevel Bevel pistons have a 45 degree bevel edge on the bottom side which allows for quicker rebound damping. Lighter rebound damping (rebound= extension) means that the shock can more quickly respond after bumps in the track, keeping the tires from hopping. Also on large jump landings, the lighter rebound damping keeps the wheels on the track as the chassis recovers from bottoming. This translates to added stability and predictablility. We recommend: 2wd Stand Up use 2x1.6 with 27.5 wt. silicone shock fluid. 3x1.4 with 27.5 wt. silicone shock fluid. 2wd Lay Down use 2x1.7 with 30 wt. silicone shock fluid OR 3x1.5 with 30 wt. silicone shock fluid. 4wd Rear Suspension use 2x1.7 with 30 wt. silicone shock fluid OR 3x1.5 with 30 wt. silicone shock fluid. Source Schelle Racing: http://www.schelleracing.com/Schelle-Associated-V2-12mm-Piston-Tuning-Set-8pr-SCH1368
