Headset Specs

2nut™ weight

(g)

total

stack

height

(mm)

lower

stack

height

(mm)

cup

skirt

(mm)

head

tube

I.D.

(mm)

base

plate

I.D.

(mm)

fork

crown

O.D.

(mm)

1" 94 37.4 12.9 30.2 30.1 26.4 26.5
1"BMX 110 39.1 13.7 32.8 32.7 26.4 26.5
1-1/8" 110 38.5 13.7 34.0 33.9 30.0 30.1
1-1/4" 129 40.0 14.2 37.0 36.9 33.0 33.1
GripNut™
weight

(g)

total

stack

height

(mm)

lower

stack

height

(mm)

cup

skirt

(mm)

head

tube

I.D.

(mm)

base

plate

I.D.

(mm)

fork

crown

O.D.

(mm)

1" 93 33.0-38.0 12.9 30.2 30.1 26.4 26.5
1"Ti 99 33.0-38.0 12.9 30.2 30.1 26.4 26.5
1"BMX 107 34.2-39.2 13.7 32.8 32.7 26.4 26.5
1-1/8" 109 33.9-38.9 13.7 34.0 33.9 30.0 30.1
1-1/4" 128 35.0-40.0 14.2 37.0 36.9 33.0 33.1
NoThreadSet™
weight

(g)
total

stack

height

(mm)
lower

stack

height

(mm)
cup

skirt

(mm)

head

tube

I.D.

(mm)
base

plate

I.D.

(mm)

fork

crown

O.D.

(mm)

1" 84 28.0 12.9 30.2 30.1 26.4 26.5
1"Ti 88 28.0 12.9 30.2 30.1 26.4 26.5
1"BMX 99 32.0 13.7 32.8 32.7 26.4 26.5
1-1/8" 98 31.4 13.7 34.0 33.9 30.0 30.1
1-1/8"Ti 102 31.4 13.7 34.0 33.9 30.0 30.1
1-1/4" 113 31.0 14.2 37.0 36.9 33.0 33.1
1.5" 230 36.0 14.8 49.7 49.6 39.7 39.8
1.5" Devolution 250 37.3 14.8 49.7 49.6 30.0 30.1
Devolution™ 115 31.0 14.2 37.0 36.9 30.0 30.1
SteelSet™ 223 31.4 13.7 34.0 33.9 30 30.1

* Please note that the Steelset requires a deeper
bore in the frame (25.6mm or 1.01" deep) due to it's
1" long cup skirts.