Giant OCR C1 Frame and Fork | Carbon Fiber | Large 57cm, 700c, 3lbs, Excellent

Description

Notes from MyBikeThing

“Engineering Artistry” Serial #GA5C397

This 2007/2008 Giant OCR C1 represents a pivotal moment in carbon frame evolution, when Giant pushed the boundaries of what was possible with composite construction. Serial number GA5C397 marks this as part of Giant’s breakthrough period of carbon innovation, featuring their advanced composite layup techniques and revolutionary tube shaping.

The Ride

This frame delivers an exceptional balance of performance and comfort through its carefully engineered tube profiles. The oversized junctions provide razor-sharp power transfer, while the flattened, wishbone-shaped stays cleverly dampen road vibration. At just over 3 pounds complete, it transforms every watt of power into pure forward momentum while maintaining the kind of all-day comfort that turns regular rides into adventures.

Condition

Frame presents in excellent condition with minimal wear. Minor cosmetic imperfections in logo decal on top tube and racing stripes on rear stays. The carbon weave shows beautifully through the glossy finish. No structural issues or damage.

Before You Buy – A Note from Paul

Every frame I sell has been personally inspected and honestly described, but I want you to be 100% confident in your decision. Please take a moment to watch the detailed video included with this listing. Due to the personal nature of frame fit and the cost of shipping, I cannot accept returns. That’s why I encourage you to reach out to me directly with any questions, whether they’re about dimensions, condition, or build suggestions. I’m Paul – not a chatbot, not a sales team, just a fellow cyclist who wants to make sure this frame finds the right home. Let’s talk about this frame and make sure it’s perfect for you before you buy.

Sizing & Fit

• Top Tube: 57cm (center-to-center)
• Seat Tube: 57cm (top-to-center)
• Down Tube: 66cm (center-to-center)
• Chainstays: 43cm (center-to-center)
• 700c wheels with standard road clearance
• Dropouts (130mm rear, 100mm front)

Frame Details

• Material: Carbon fiber composite
• Rear Spacing: 130mm
• Internal cable routing
• Removable (Brazeon) front derailleur mount
• Original gloss clear coat over visible carbon weave with racing stripe accents

Building Requirements

• Headset: Integrated 40mm (requires Giant-specific FSA shim)
• Bottom Bracket: 68mm BSA (English threading)
• Seatpost: 27.2mm
• Front Derailleur: Braze-on mount
• Brakes: Cantilever rim
• Stem: 1-1/8″ steerer compatible

What’s Included

• Carbon fork with aluminum steerer
• All cable guides
• Rear derailleur hanger
• Front derailleur braze-on mount
• Water bottle cage bolts
• Seat clamp

Is This Your Bike Thing?

For the cyclist who appreciates the perfect balance of speed and comfort, this OCR C1 represents Giant’s masterful approach to carbon engineering. Ready to experience what thoughtful composite design can do for your riding?

Workshop Wisdom

Giant’s proprietary composite layup process creates reinforced junction points at high-stress areas while maintaining incredibly low weight. The oversized bottom bracket area and chainstays form a remarkably stiff platform for power transfer.