SEVEN
The Grand Touring Gravel
Built for the Long Road
The "7" on the head tube once made passersby think our brand was called 7. The client needed a reliable heavy-duty touring bike, equipped with custom titanium racks, tubeless tires, and electronic shifting.
After checking SRAM inventory, we went with GRX825 and DT SWISS GRC1400. The total weight came in at just over 9kg — the rear rack contributing its fair share. As always, we designed the frame based on the client's fitting data, modifying the STR values from his existing road bike to achieve a reach and stack that matched his personal handling style.
The Custom Titanium Rack
For the custom rack, we repeatedly simulated installation positions and load forces in 3D modeling. Balancing lightweight and design language, the rack avoids excessive tube stacking.
A reinforcing loop bar was added at the rear to prevent deformation under heavy pannier loads — a detail that emerged from the transition from 3D model to fabrication drawing.
Component Selection
DRIVETRAIN
Shimano GRX 825
2×11 Electronic
WHEELSET
DT SWISS GRC 1400
Gravel Aero | Tubeless
SEATPOST
VFV DeepV
Voicevelo | Suspension
SADDLE
SELLE ITALIA BOOST
3D Printed
HANDLEBAR
飞鸟 H200
Graphene | 400×90 | 221g
BAR TAPE
Brooks Leather
Pure Leather
TECHNICAL SPECIFICATIONS
TYPE
Gravel Touring
DRIVETRAIN
GRX 825 Di2
WHEELSET
GRC 1400
TIRE SYSTEM
Tubeless Ready
SEATPOST
VFV DeepV
SADDLE
S-Italia BOOST 3D
HANDLEBAR
飞鸟 H200
TOTAL WEIGHT
9.0kg+