High Flange Rear
The High Flange Rear is a single speed hub with large diameter flanges. Many options are available for threading, axle spacing, and spoke count.
FinishAnodized or Polished
Anodized ColorBlack or Silver
DimensionsAxle Spacing: 120mm or 130mm
Flange Diameter: 65mm
Center to Flange: 32.5mm
Fixed Chainline: 44mm
Freewheel Chainline: 48mm
Spoke Holes24, 28, 32, 36, or 48
Fixed/Freewheel ThreadingEnglish 1.37x24tpi
Lockring ThreadingEnglish 1.29x24tpi
Exploded Assembly Drawing
Axle Bolt Torque21 N·m
We machine these hubs from three inch round bars of 6061 aluminum. The hub shells are put through four different machining processes before they go to finishing, and the end result is something we’re very proud of. The wide flanges have six window cutouts in them to save weight and draw on the influence of classic track hubs.
The hub shells are available with dedicated fixed gear threading on one side only, or in a flip-flop version with fixed threading on one side and freewheel threading on the other. Proper left-handed lock ring threading keeps fixed gear cogs secure, and our heavy-duty stainless steel lock ring is included.
The axle is ground from 7075 aluminum, which has a great strength to weight ratio. The outer lock nut faces are made of knurled steel for a solid grip against dropouts. Two axles are available with 120mm or 130mm outer lock nut spacing. The ends of the axle are threaded to receive our stainless steel axle bolts. Hub Service Parts are available to convert between axle lengths.
We use high-fill sealed bearings in the High Flange Rear, and they can be adjusted with our simple adjuster ring.
The chainline on the High Flange Rear is spaced to 44mm for the fixed cog, and 48mm for the freewheel.
Spoke hole counts are available in 24, 28, 32, and 36, and the spoke holes are chamfered to reduce stress on the head and elbow of the spoke.
Stay in Touch
Our monthly email is an ongoing bike conversation for creative people who spend a lot of time in their garage.