Hub Measurements
Using these measurements, in addition to the ERD (Effective Rim Diameter) of the rim you intend to use, you can calculate, using the online spoke calculator from United Bicycle Institute (link), what length spoke you’ll need.
Hub Style |
Center to Drive Flange |
Center to Non-Drive Flange |
Drive Flange Diameter |
Non-Drive Flange Diameter |
|
|
Mini BMX Front,
Totem Front, Elite BMX Front, Madera Pilot V2 |
32mm
|
32mm
|
43mm
|
43mm
|
|
|
Mini BMX Rear,
Totem Rear, Madera V2 Cassette |
28mm
|
33mm
|
54mm
|
43mm
|
|
|
Elite BMX
Cassette Rear |
27mm
|
33mm
|
59mm
|
43mm
|
|
|
MTB Elite
Non-Disc Front |
30mm
|
30mm
|
43mm
|
43mm
|
|
|
MTB Elite
Disc Front |
32mm
|
19mm
|
58mm
|
58mm
|
|
|
MTB Elite
Single Speed |
31mm
|
32mm
|
60mm
|
58mm
|
|
|
MTB Elite
9-10 Speed |
18mm
|
32mm
|
58mm
|
58mm
|
|
|
Road/CX
Elite Front |
33mm
|
33mm
|
33mm
|
33mm
|
|
|
Road/CX
Elite Rear |
17mm
|
36mm
|
58mm
|
60mm
|
|
|
Track Front,
Track Front Smooth |
32mm
|
32mm
|
58mm
|
58mm
|
|
|
Fixed/Free
Track Rear |
30mm
|
33mm
|
58mm
|
58mm
|
|
|
Fixed/Fixed
Track Rear |
31mm
|
31mm
|
58mm
|
58mm
|
|
|
Track Smooth
Rear |
31mm
|
40mm
|
58mm
|
58mm
|
|
|
High Flange
BMX Front |
32mm
|
32mm
|
54mm
|
54mm
|
|
|
High Flange
BMX Rear |
34mm
|
31mm
|
54mm
|
54mm
|
|
|
Classic MTB
Front Disc 20mm |
31mm
|
23mm
|
59mm
|
59mm
|
|
|
Classic MTB
Front 20mm |
37mm
|
37mm
|
53mm
|
53mm
|
|
|
Classic MTB
Front Disc 3/8” / QR |
34mm
|
24mm
|
59mm
|
59mm
|
|
|
Classic MTB
Single Speed |
33mm
|
31mm
|
59mm
|
59mm
|
|
|
Classic MTB
9/10 Speed |
21mm
|
33mm
|
59mm
|
59mm
|
|
|
Classic MTB
9/10 Speed 150mm |
27mm
|
28mm
|
57mm
|
57mm
|
|
|
Zcoaster & Gulf Coaster BMX
|
32mm
|
32mm
|
66mm
|
50mm
|
|
|
MTB Zcoaster
|
32mm
|
32mm
|
66mm
|
58mm
|
|
| Profile Nomad Rear Freewheel Hub |
26mm
|
32mm
|
44mm
|
||
| Profile Rear BMX Disk Hub |
18mm
|
32mm
|
58mm
|
58mm | |
| Gyro-Lite Hub Front |
35mm
|
35mm
|
62mm
|
62mm | |
| Gyro-Lite Hub Rear |
27mm
|
30mm
|
62mm
|
62mm | |
| Boost MTB Front Hub |
36mm
|
24mm
|
58mm
|
58mm | |
| Boost 11-Speed Rear Hub |
23mm
|
35mm
|
58mm
|
58mm | |
| Boost 1-Speed Rear Hub |
39mm
|
36mm
|
60mm
|
60mm |