We need to keep up and maybe even add more. Our new carbon Sterk (gravel in Czech) is a step forward in every way. The lowered seatstays add to the bike's comfort and, together with the very short chainstays, add agility and better handling. We added UDH hanger. Hanger is universal and can be found anywhere in the world. This rebuild will also allow the use of the latest SRAM Transmissions shifting on the bike. All wiring runs through the interior, everything is aesthetically pleasing and the wiring no longer gets in the way of any bag under the handlebars.
We use best possible functional parts for best possible gravel performance, there is not neccessary to change parts just after bike purchase. All is tested before on us.
T47 Bottom Bracket
Most stressed parts of the frame are robust to keep the ideal frame stiffness. Threaded T47 BB is perfect option for power transfers.
Brake Rotors
The frame is ready for flat mount brakes, but directly for bigger brake rotors. Rear is ready for 160mm and front for 160mm or 180mm. For best possible braking performance without adapters.
BB Standard |
T47 |
Headset Standard |
1 1/2" and 1 1/2" |
Frame Max Tire Clearance w/o fender |
700C x 45mm / 650B x 48mm |
Seat Post Diameter |
27.2 mm |
Seat clamp |
Wedge type |
Brake mount front |
Flat mount |
Brake mount rear |
Flat mount |
Rotor clearance front |
160 or 180 mm |
Rotor clearance rear |
160 mm |
Maximum chainring - GRX or Wide |
1x 50T |
Maximum chainring for traditional road crank |
1x 42T |
Front through axle |
12 mm x 100 mm |
Rear through axle |
12 mm x 142 mm |
Front Derailleur Hanger |
Braze on |
Bottle Mounts |
2x |
Fender Mounts |
only on fork |
Rack Mounts |
no |
Frame Geometry (mm)
SIZE | A | B | RC | D | E | F | FC | G | H | H“ | I | J | WB | Reach | Stack |
S | 458 | 546 | 423 | 69 | 395 | 50/45 | 609 | 127 | 74 | 71,2 | 1 1/2'' | 1 1/2'' | 1021 | 389 | 549 |
M | 495 | 560 | 423 | 69 | 395 | 50/45 | 614 | 148 | 73,5 | 71,5 | 1 1/2'' | 1 1/2'' | 1029 | 391 | 569 |
L | 525 | 585 | 423 | 69 | 395 | 50/45 | 624 | 172 | 73 | 71,5 | 1 1/2'' | 1 1/2'' | 1039 | 410 | 591 |
XL | 555 | 592 | 423 | 69 | 395 | 50/45 | 631 | 195 | 72,5 | 72 | 1 1/2'' | 1 1/2'' | 1047 | 397 | 616 |
Recommender Bike Size (cm)
SIZE | S | M | L | XL |
RIDER HEIGHT (cm) | 165-173 | 172-179 | 178-188 | 187-196 |