Ships twice a month. Estimated delivery 2–4 weeks from order date. The Why The Hell Not Gearing Kits provide you with all the gearing setups most riders would want for the Aero Pro at a discount so you can experiment all you want. Refer to the Aero Pro User Manual for recommended E.P.I.C. Drivetrain configurations. What's included Kegel Complete 32T, 36T, 40T, 45T Kegel pulleys (1 pair of each with bearings) 340, 350, 360, 375 Continental belts (1 pair of each) ABEC Complete 32T, 36T, 40T, 45T ABEC pulleys (1 pair of each with bearings) 340, 350, 360, 375 Continental belts (1 pair of each) Kegel + ABEC Complete 32T, 36T, 40T, 45T Kegel pulleys (1 pair of each with bearings) 32T, 36T, 40T, 45T ABEC pulleys (1 pair of each with bearings) 340, 350, 360, 375 Continental belts (2 pairs of each) All belts included are genuine Continental belts imported from Germany that last 2–5x longer than typical off-the-shelf belts.