distinct geometries, for the discerning rider
Every frame shares the R J.ACK’s perfect balance of agility, comfort, speed and style.
Specify either a press fit or threaded bottom bracket when ordering your frame.
Wider tyres minimise rolling resistance and maximise comfort, so the J.ACK is designed with clearance for tyres for up to 28mm at the front (with the Enve Carbon Fibre Road fork 2.0) and up to 32mm at the rear.
Both the gear and rear brake cables are routed through the frame. This not only maintains the exquisite elegance of the frame, but also protects cables from dirt, ensuring smooth shifting and razor-sharp braking.
For optimum steering precision, a bike needs unyielding stiffness where the head tube meets the fork. The R J.ACK is designed with a wider head tube to eradicate flex and guarantee pin-sharp steering.
As a guide, we’d suggest:
- 48cm: 152-158cm
- 50cm: 156-164cm
- 52cm: 162-170cm
- 54cm: 168-178cm
- 56cm: 174-184cm
- 58cm: 180-188cm
- 60cm: 186-194cm
- 62cm: 192-200cm
If you are unsure about which size is right for you, please don’t hesitate to get in touch.
- Elegant design
- Internal cable routing
- Choose from two geometry options
- Electronic groupset ready on request
- Timeless bead blasted graphics
- Coordinated laser etched top cap
- Optional threaded or press fit PF30 bottom bracket
- Bespoke painting options
- Tapered head tube
- 28mm tyre clearance
- Durable 3Al-2.5V titanium tubing
- Hope seatpost clamp included