The Seaboard CR05 is a budget-friendly steel road bike frame from AliExpress, praised for its smooth ride quality, corrosion-resistant construction, and practical features like external cable routing and generous tire clearance. However, it is heavier than carbon alternatives and has some build quality quirks, such as a fiberglass-lined steerer tube and missing accessories.
Pros
- Smooth and supple ride quality with springy feel1
- Corrosion-resistant chromium-molybdenum steel with clear coat finish1
- Good tire clearance for 30C tires with room for 32C1
- External cable routing simplifies building and maintenance1
- Includes carbon fiber fork with disc brake mounts and thru-axle compatibility1
- Decent welds with consistent beads and no visible pinholes1
- BSA bottom bracket threads well tapped1
- Barrel adjusters on frame for gear cables1
- Longer head tube for relaxed geometry1
Cons
- Heavier than carbon frames (frame 2.24 kg, complete bike 8.6 kg)1
- Missing bottle cage bolt1
- Seat post not included initially (seller later agreed to send one)1
- Carbon fork has fiberglass liner inside steerer tube, thicker than usual1
- Unusual thru-axle design on fork with no aluminum insert for threads1
- Bottom bearing cup design may make bearing replacement difficult1
- No front derailleur hanger included (requires clamp-on adapter)1
- Long delivery time (two and a half months)1
- Rear brake hose routing challenging due to lack of guide tubes1
- Feels slightly soft when sprinting or climbing out of saddle1
Key Facts
- Frame weight measured at 2.24 kg (XL size)1
- Complete bike weight 8.6 kg (XL size)1
- Price paid: £372 on AliExpress1
- Chromium-molybdenum steel construction1
- Carbon fiber fork with 100x12mm front and 142x12mm rear thru-axle1
- BSA bottom bracket1
- Tire clearance: 700x30C with room for 700x32C1
- External cable routing for gear cables, internal routing for rear brake hose1
Sources
Reviews & Ratings
13:48The reviewer discusses their purchase of a cheap steel road bike frame from AliExpress, specifically the 700Cx30C SEABOARD CR05 Road Bike Frame. They mention the frame's construction from chromium-molybdenum steel, its compatibility with 30C tires, and the inclusion of a carbon fiber fork with disc brake mounts and thru-axle compatibility (100x12mm front and 142x12mm rear). The reviewer notes the frame's clear coat finish, which shows the brushed steel, and its XL size. They also highlight the internal routing for the rear brake hose and external routing for gear cables. The frame's weight is measured at 2.24 kilos, which is noted as average for steel frames.
37:36The reviewer discusses the 700Cx30C SEABOARD CR05 Road Bike Frame Chromium-molybdenum Steel Frame Carbon Fiber Fork Disc Brake 100x12mm 142x12mm Thru Axle in detail throughout the video. They mention purchasing the frame on AliExpress for £372 and highlight its steel construction with a carbon fork. The frame features external cable routing, a longer head tube for a more relaxed geometry, and barrel adjusters for gear cables. The reviewer praises the frame's ride quality, describing it as supple and smooth, with a springy feel that absorbs road vibrations well. They also note the frame's good tire clearance, allowing for 700x30C tires with room for 700x32C. The build process is described as straightforward due to the external cable routing, though the rear brake hose routing was challenging. The reviewer also mentions applying Bow Shield T9 inside the frame for rust prevention.
Where to Buy
700Cx30C SEABOARD CR05 Rennradrahmen Chrom-Molybdän-Stahlrahmen Kohlefaser-Gabel Scheibenbremse 100 x 12 mm 142 x 12 mm Steckachse - AliExpress 18
Specifications
Attributes
Included Components
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