Ritchey Comp 2-Bolt Seatpost: 27.2mm 400mm Black 2020 Model ModelNumber=K4931 Shimano derailleurs require a longer

Shimano derailleurs require a longer B-tension screw (use WQ-2299)

Front/Rear RR Cassette Body/Freehub 1s FW/FW Hole Count 36H Spacing/Axle B/O-NUT 14mmx1 Material Aly Color Blk Weight Brake Type RIM Spacing PCD-L PCD-R LTF-L LTF-R CTF-L CTF-R

6 ISO 622 Bead TBLS - Fold Tread/Sidewall Color Bk/Bsk PSI 30 Weight (Grams) 659 TPI 120 Durometer 70a/60a Features RS3/KSCT/TLR Reflective Sidewall No

Boost 148 x 12mm rear spacing Color Yellow Mfg Size Large Rear Axle 12mm Thru x 148mm Platform Ultra TT (Effective) 628

Convenient to use with thumb or any finger Color Polished Brass Material Brass

Ritchey Comp 2-Bolt Seatpost: 27.2mm 400mm Black 2020 Model ModelNumber=K4931 Shimano derailleurs require a longerRitchey Comp 2 Bolt post is compatible with multiple rail types and features and extra secure 2 bolt clamp. Internally ovalized to maximize strength Two bolt design for easy to adjust vise like grip Low profile clamp reduces stress on lightweight rails and wont bottom out Bolts oriented to the axis of the rails for greatest contact area with the saddle Defined Color Black Diameter 27. 2Mm