S-Bobbin, Rotor Attachment Complete Hardware Kit The Paragon S-Bobbin Rotor Attachment Complete Hardware Kit provides everything needed for a complete rotor attachment setup on floating 2-piece rotors. The corrosion resistant hardware allows secure mounting and smooth expansion and contraction throughout heat cycles. This complete kit includes enough hardware for two rotors. Part Number: PRH.Sx.16/20/24.CK S-Bobbin Options S-Bobbin Flange Thickness Float S-Bobbin (A) 4.35mm - 4.30mm 0.4mm S-Bobbin (B) 4.85mm - 4.80mm 0.4mm S-Bobbin (C) 5.05mm - 5.00mm 0.4mm S-Bobbin (D) 5.65mm - 5.60mm 0.2mm S-Bobbin (H) 5.55mm - 5.50mm 0.4mm S-Bobbin (J) 5.65mm - 5.60mm 0.4mm S-Bobbin (L) 5.65mm - 5.60mm 0.7mm S-Bobbin (M) 6.35mm - 6.30mm 0.2mm S-Bobbin (P) 6.35mm - 6.30mm 0.4mm What's Included Aerospace grade Geomet coated bolts Washers Locking nuts Stainless steel S-Bobbins Cross Reference Direct Replacement of: AP CP2494 Type "Float in disc" standard bobbin hardware Installation Notes Assemble torque specs: 10.5 lbf-ft / 14 Nm We recommend using new hardware every time when replacing rotor rings. If there is no visible wear, bobbins can be reused. A bolt kit that includes bolts, locking nuts, and washers is available for purchase. Available Part Numbers PRH.Sx.16 — 16 bolts (enough for a pair of 8-bolt rotors), Standard S-Bobbin PRH.Sx.20 — 20 bolts (enough for a pair of 10-bolt rotors), Standard S-Bobbin PRH.Sx.24 — 24 bolts (enough for a pair of 12-bolt rotors), Standard S-Bobbin