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R J.ACK Frameset

A timeless titanium road frameset, available in two
distinct geometries, for the discerning rider

Frame only from £1850.00 // Frame & forks from £2270.00

Every frame is unique. Customisable options include bottom bracket type and bespoke, bead-blasted message.
Every frame shares the R J.ACK’s perfect balance of agility, comfort, speed and style.
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Choose from two geometry options

Race: Our raciest fit puts the rider into a more aerodynamic position, ideal for fast sportive riding, racing, and topping Strava KoM leaderboards.

Classic: Seeking more of a café racer that’s perfectly in tune with long days in the saddle? Our R J.ACK Classic combines elegant style with a more back-friendly riding position, perfect for swift progress on longer rides.

Design Features
THREADED BOTTOM BRACKET

Specify either a press fit or threaded bottom bracket when ordering your frame.

TYRE CLEARANCE

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.

INTERNAL CABLE ROUTING

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.

TAPERED HEADTUBE

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.

R J.ACK Geometry – Race
We’re on hand to help you choose the right size frame. We have access to thousands of stack and reach figures, so by way of comparison to your current bike we can confidently recommend the correct size for you.

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.

WE'RE HERE TO HELP
S – Stack494.6
R – Reach366
HT – Head Tube Length105
HA – Head Angle69.5˚
AC – Fork Axle to Crown367
FO – Fork Offset43
TTE - Top Tube Effective517.2
TT - Top Tube Actual505.4
ST – Seat Tube Length472
SA – Seat Tube Angle73˚
CS – Chain Stay Length415
WB – Wheelbase980.8
FC – Front Centre Distance575.4
BBD – Bottom Bracket Drop68
Rear axle spacing130
Typical stem length80 or 90
Typical handlebar width38 or 40
Typical crank length170
S – Stack509.2
R – Reach373
HT – Head Tube Length115
HA – Head Angle71˚
AC – Fork Axle to Crown367
FO – Fork Offset43
TTE - Top Tube Effective528.7
TT - Top tube Actual515.6
ST – Seat Tube Length487
SA – Seat Tube Angle73˚
CS – Chain Stay Length415
WB – Wheelbase979.8
FC – Front Centre Distance574.4
BBD – Bottom Bracket Drop68
Rear axle spacing130
Typical stem length90
Typical handlebar width40
Typical crank length170
S – Stack526.9
R – Reach378
HT – Head Tube Length130
HA – Head Angle72˚
AC – Fork Axle to Crown367
FO – Fork Offset43
TTE - Top Tube Effective539.1
TT - Top Tube Actual525.1
ST – Seat Tube Length505
SA – Seat Tube Angle73˚
CS – Chain Stay Length415
WB – Wheelbase981.7
FC – Front Centre Distance576.3
BBD – Bottom Bracket Drop68
Rear axle spacing130
Typical stem length90 or 100
Typical handlebar width40 or 42
Typical crank length170
S – Stack538.1
R – Reach384
HT – Head Tube Length140
HA – Head Angle72.5˚
AC – Fork Axle to Crown367
FO – Fork Offset43
TTE - Top Tube Effective548.5
TT - Tope Tube Actual533.9
ST – Seat Tube Length515
SA – Seat Tube Angle73˚
CS – Chain Stay Length415
WB – Wheelbase986.7
FC – Front Centre Distance581.3
BBD – Bottom Bracket Drop68
Rear axle spacing130
Typical stem length100
Typical handlebar width42
Typical crank length172.5
S – Stack557.2
R – Reach390
HT – Head Tube Length160
HA – Head Angle72.5˚
AC – Fork Axle to Crown367
FO – Fork Offset43
TTE - Top Tube Effective560.3
TT - Top Tube Actual545.4
ST – Seat Tube Length535
SA – Seat Tube Angle73˚
CS – Chain Stay Length415
WB – Wheelbase998.7
FC – Front Centre Distance593.2
BBD – Bottom Bracket Drop68
Rear axle spacing130
Typical stem length100
Typical handlebar width42
Typical crank length172.5
S – Stack571.5
R – Reach396
HT – Head Tube Length175
HA – Head Angle72.5˚
AC – Fork Axle to Crown367
FO – Fork Offset43
TTE - Top Tube Effective570.8
TT - Top Tube Actual555.6
ST – Seat Tube Length540
SA – Seat Tube Angle73˚
CS – Chain Stay Length415
WB – Wheelbase1009.2
FC – Front Centre Distance603.7
BBD – Bottom Bracket Drop68
Rear axle spacing130
Typical stem length110
Typical handlebar width42 or 44
Typical crank length175
S – Stack581
R – Reach402
HT – Head Tube Length185
HA – Head Angle72.5˚
AC – Fork Axle to Crown367
FO – Fork Offset43
ST – Seat Tube Length550
SA – Seat Tube Angle73˚
CS – Chain Stay Length415
WB – Wheelbase1018.2
FC – Front Centre Distance612.6
BBD – Bottom Bracket Drop68
Rear axle spacing130
Typical stem length110 or 120
Typical handlebar width44
Typical crank length175
TTE - Top Tube Effective579.6
TT - Top Tube Actual564.3
S – Stack597.1
R – Reach408
HT – Head Tube Length200
HA – Head Angle73˚
AC – Fork Axle to Crown367
FO – Fork Offset43
TTE - Top Tube Effective590.6
TT - Top Tube Actual574.6
ST – Seat Tube Length580
SA – Seat Tube Angle73˚
CS – Chain Stay Length415
WB – Wheelbase1024.1
FC – Front Centre Distance618.5
BBD – Bottom Bracket Drop68
Rear axle spacing130
Typical stem length120
Typical handlebar width44
Typical crank length177.5

Technical Information
Wheels:
Rear axle: 130mm
Front axle: 100mm
Tyres: Max width: 28mm at the front with Enve Carbon Fibre Road Fork 2.0, and 32mm at the rear
Whilst we believe the above information to be accurate there may be compatability issues with some untested combinations of tyres.
Seat post: 27.2mm
Seat clamp: 31.8mm
Front derailleur: 31.8mm, band on.
Bottom Bracket:
Threaded or press fit 30 (PF30)
68mm wide shell
Tapered headtube / headset:
1.125” – 1.5”
Headset bearings – integral
Top integral cup diameter – 44mm
Top integral cup stack height – 8mm (including 3 shims)
Bottom integral cup diameter – 56mm
Bottom integral cup stack height – 6mm
Enve Carbon Fibre Road Fork 2.0:
Weight: 350g
Steerer Tube Length: 350mm
Rake: 43mm
Axle to Crown: 367mm
Brake: Caliper
Quick release
Max Tire Clearance: 28mm
1.125” – 1.5” tapered carbon steerer
5 Year Warranty
  • Elegant design
  • Internal cable routing
  • Choose from two geometry options
  • Electronic groupset ready on request
  • Timeless bead blasted graphics
  • 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

In the press

jlaverack-roadcc

Have a question about this frameset?

Feel free to contact us if you have any questions at all, we’d love to hear from you.

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J.Laverack Bicycles