Muc-Off Big Bore Hyrid Tubeless Valve Stems - Large 45mm Blue Model-Dropout 561 and here are instructions on

and here are instructions on how to measure your BCD

model 20P-2 fork/frame mount (PM) 74mm caliper post mount 74mm size +20mm color black/stainless

Machined surface of paddle provides extra grip

50 Tire Diameter/ISO 29/622 TPI 60x2TPI Bead Folding e-Bike approved No Tire Width Range 2

Muc-Off Big Bore Hyrid Tubeless Valve Stems - Large 45mm Blue Model-Dropout 561 and here are instructions on245% higher air flow than traditional presta valves thanks to the straight through bore deisgn Precision CNC machined from 7075 aircraft grade aluminium Stainless steel ball valve with seals and O rings 4 way tyre insert air flow base is compatible with most tubeless inserts 4mm machined hex key slot for easy installation removal Available in 25, 35, 45mm valve stems to suit different rim depths TECH SPECS Valve Hybrid Valve Length 75mm