Reviews & Ratings
The SPCycle G028 is a new carbon gravel frameset offering massive tire clearance up to 700x57C or 29x2.25 inches, making it suitable for monster-cross or drop-bar MTB builds. It features Toray T1000/T1100 carbon, T47 threaded bottom bracket, UDH hanger, full internal routing, and flat mount disc brakes. Frame weight is around 1000-1050g (size M unpainted) and fork ~450g. It has passed ISO 4210 testing. Sizes M and L are available now; S and XL expected mid-May 2026. Pricing is not yet public but expected to be competitive. Some users noted paint overspray and a polarizing aesthetic. The frame can be ordered without rivets on fork/seatstays upon request.
AI Summary
Pros
- Very large tire clearance (700x57C / 29x2.25")
- Lightweight carbon frame (1000-1050g) and fork (450g)
- Modern standards: T47 BB, UDH hanger, full internal routing
- ISO 4210 certified
- Option to order without rivets on fork/seatstays
Cons
- Long chainstays (435mm) may be a negative for some
- Paint overspray in BB area and rear brake mount
- Aesthetic: angled headtube design seen as unnecessary by some
- Longer top tube than some prefer
Key Points
- Material: Toray T1000 + T1100 carbon fiber
- Tire clearance: 700x57C or 29x2.25"
- Bottom bracket: T47 threaded, 85.5mm shell width
- Rear derailleur hanger: UDH
- Seatpost: 27.2mm
- Headset: 1-1/2" top and bottom
- Brakes: Flat mount disc, 160mm rotor
- Axles: 142x12mm rear, 100x12mm front
- Cable routing: Fully hidden internal
- Compatible with Di2 and mechanical drivetrains
- Frame weight: ~1000-1050g (size M unpainted), fork ~460g
- Sizes: S, M, L, XL (M and L available now, S and XL mid-May 2026)
- ISO 4210 tested
Where to Buy

Spcycle G028 Carbon Gravel Bike Frame 700x57C UDH Hanger Full Internal Cable Gravel Bicycle Carbon Frameset
Specifications
Attributes
Included Components
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