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Boundary IS Headset

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Type

Type S.H.I.S Frame Diametermm Fork Steerermm Top Stackmm Weight±5%
IS5-Upper IS41/28.6 41 28.6(1-1/8 inch) 5.55 33.3g
IS15-Upper IS41/28.6 41 28.6(1-1/8 inch ) 15 39.3g
IS99-Upper IS42/28.6 41.8 28.6(1-1/8 inch ) 4 40.2g
IS100-Upper IS42/28.6 41.8 28.6(1-1/8 inch ) 12 53.3g
IS101-Upper IS42/28.6 41.8 28.6(1-1/8 inch ) 7 42g
IS5-Lower IS42/30 41 30(1-1/8 inch) 22.8g
IS99-Lower IS42/33 46.9 33(1-1/4 inch) 35.2g
IS101-Lower IS42/40 51.8 39.8(1.5 inch) 38.8g

*Upper Headset and Lower Headset sold separately.
*Expander and star nut excluded and sold individually.

Tech Specs

Material Alloy
Bearing Cartridge
Screw Black M6 alloy screw

In The Box

Upper Headset

1 Screw
1 Top cap
1 Split ring
1 Height cap
1 Headset bearing
2 Bearing spacer

Lower Headset

1 Headset bearing
1 Crown race