Cyclocross > O'Brien Cyclocross

O'Brien Aluminum/Carbon Cross Frame

The O'Brien is hand built with 7000 series high tensile strength aluminum with the same carbon rear triangle as the Miniluv. Sharing identical geometry with the Miniluv, you'll have a hard time deciding which bike to put in the pit.

All cross frames have a 2 year warranty.
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O'Brien Frame Specifications:

Weight (size 56, frame only)1.5 kg (3.4 lbs)
Tube Set7000 series aluminum front triangle with carbon fiber rear
ConstructionHand welded front with bladder formed carbon rear
Rear Derailluer HangerForged alloy, replaceable
Seat Post Diameter31.6 mm
Front Derailleur Diameter34.9 mm
HeadsetIntegrated Cane Creek (36°×45°), 1 1/8" steerer
Rear Dropout Spacing130 mm

Cyclocross Frame Geometry:

Frame size (CT)5054565860
Horizontal Top Tube (mm)525550570590606
Head Tube Angle717272.572.572.5
Seat Tube Angle7473.5737372
Head Tube Length140155160180200
Bottom Bracket Drop6868686868
Wheel Base10071018102710481053
Fork Length395395395395395
Fork Offset43-4743-4743-4743-4743-47
Chain stay Length432432432432432
Front Center584595606624630