This allows the rear derailleur to drop the chain onto the smallest sprocket where the normal BD403 will not. BOARDMAN REPLACEABLE GEAR DROPOUTS. BD462 for Boardman & Nukeproof is a bolt-thru axle with a thread of M12 x 1.5mm pitch.
GT Bikes Rear Derailleur Hanger - Fits a Range of Models WITH FIXING BOLT
Burton Bikes Rear Derailleur Mech Hanger Extender, 8 colours
Compatible Rear Derailleur Gear Mech Hanger For BOARDMAN and KHS Bikes NEW
Rear Derailleur Gear Mech Hanger For BOARDMAN and KHS Bikes
Cycle Dropout Rear Derailleur Hanger For Boardman Voodoo Carrera Voodoo Bikes
Rear Derailleur Hanger Mech Dropout Carrera Voodoo Boardman Mountain Bikes MTB