Ibis Silk SL Geometry
NOMINAL SIZE (A) 470 500 530 550 580 610
SEAT TUBE LENGTH (B) 420 450.8 472.6 493 529.2 554.5
CHAINSTAY LENGTH C 406 406 406 406 406 406
FRONT CENTER (D) 580.3 576.8 580.2 589.5 599.8 602.1
WHEELBASE (E) 972.4 979 985.2 995.6 998.1
EFFECTIVE TOP TUBE (F) 52.6 53.0 53.7 56.0 57.4 59.0
OFFSET (G) 43 43 43 43 43 43
DROP (H) 70 70 70 70 70 70
FORK LENGTH (I) 370 370 370 370 370 370
HEAD TUBE LENGTH (J) 110 115 145 160 195 200
HEAD TUBE ANGLE (K) 72 72 72 73 73 73.5
SEAT TUBE ANGLE (L) 74.6 74.5 74.5 73.5 73 73

Measurement in millimeters unless otherwise noted
Seat Post Diameter: 31.6 mm
Front Derailler: 34.9 mm band clamp
Headset: Campagnolo Hiddenset™ standard
BB: 68mm (BSA) English thread
Chainline: 43.5MM