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Planet X Bikes

Holdsworth Helm Shimano Ultegra Di2 Titanium Road Bike

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Eponymous to the Helm, the foreboding wind that roars down the mountain side of Great Dun...

Eponymous to the Helm, the foreboding wind that roars down the mountain side of Great Dun Fell, Britain’s highest paved road. The Holdsworth Helm is a contemporary titanium road bike. Built with Aerospace Grade 9 3AL-2.5V Titanium tubing, with precise handling and clearance for 32mm rubber. Light, strong, responsive, and comfortable. This is the purist’s road machine.


  • Shimano Ultegra Di2 2x12 Drivetrain
  • Aerospace Grade 9 3AL-2.5V Titanium Frame
  • Fulcrum Racing 400 Tubeless Ready Wheels
  • High Modulus Carbon Fork
  • Weight - Medium 8.7kg


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Holdsworth Helm Shimano Ultegra Di2 Titanium Road Bike From £3,999.99
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Clean lines, rounded tubes, uncluttered and unphased, The Holdsworth Helm has been meticulously designed and constructed using Aerospace Grade 9 3AL-2.5V Titanium, for unparalleled lightness and strength. With geometry that retains the high-speed pedigree of a pure road bike, but with modern touches that make it perfect for ultra-endurance expeditions also. This is a bike made for long, fast days in the saddle.

A CNC detailed tapered head tube allows for a large weld platform and bigger bearings. Resulting in a stronger, less flexible, and better handling front end. Hourglass profile chain stays and a 27.2mm seat post give comfort and spring. The bridgeless seat tubes offer sprightliness, whilst offering a clean aesthetic. Power is transferred directly though the creak free BSA threaded bottom bracket, which has been CNC engraved with the coordinates of the radar station at the peak of Great Dun Fell.

  • Versatile Road Geometry
  • Lightweight and High Strength Aerospace Grade 9 3AL-2.5V Titanium
  • Capable 700c x 32mm Tyre Clearance
  • Premium CNC Machined Detailing
  • Lifetime Frame Warranty

The Ultegra is Shimano's fastest, most inspired drivetrain at this level and is packed with innovative game-changing features.

HYPERGLIDE+ technology comes to road cycling for the first time, letting you climb, sprint, or cruise without stopping to think about your next gear change.

The revolutionary wireless integrated Di2 shifting system solves the challenges drivetrains present to the power-delivery equation in cycling. Di2 gives you instant, accurate, lightning-fast shifts the first and every time, at the push of a button. Even in the most extreme conditions, shifting is precise and controlled. you can change gear even under heavy load while climbing or accelerating. With Di2, you are in complete control.

Ultegra showcases a sleek new wireless cockpit brings improved ergonomics, clean aesthetics and easier maintenance.

Quieter and smoother, the Ultegra braking system allows for even more precise modulation and stopping control, every ride, thanks to Shimano's proven SERVO WAVE ACTION technology and enhanced lever ergonomics.

Product Type Default Component
Bar Tape / Grips

Selcof Soft Touch Handlebar Tape / Black

Frame Holdsworth Helm Titanium Road Frame / Medium - 53.5cm
Handle Bar Selcof Zeta V3 Alloy Road Bar / 42cm
Saddle San Marco Shortfit Open-Fit Start-Up Superwide Saddle / Xsilite Rail
Seat Post Selcof Zeta 6061 Alloy Seatpost / 27.2mm / 350mm
Stem Selcof Zeta 6061 Alloy Stem / 100mm / 31.8mm / 7 Degree
Tyre Hutchinson Challenger 700c Folding Tyre / 25mm / Black
Wheel Pair Vision Team 30 Disc CL TL 700c Road Wheelset / Shimano HG
Bottom Bracket Shimano SM-BBR60 BSA Bottom Bracket
Brake spare Shimano RT-MT800 160mm Centrelock Rotor
Brake spare Shimano SM-MA-R160D/D Mount Adapter
Brake spare SRAM Flat Mount Disc Brake Mounting Hardware / 32mm / Single
Cassette Shimano CS-R8100 12-Speed 11-34 Cassette
Chain Shimano CN-M8100-12 Speed Chain 120L
Crank Set Shimano Ultegra FC-R8100 Chainset / 172.5mm / 52/36T
Front Mech Front Mech Band On Clamp For SRAM YAW / 31.8mm / Black
Front Mech Shimano Ultegra Di2 FD-R8150 Braze On Front Mech
Fork Selcof Road Disc Carbon Fork / Matt Black
Head Set Selcof Carbon Steerer Fork Bung MK 4 / 23-24mm ID
Frame Spare Shimano BT-DN300 Battery
Frame Spare Shimano EW-EC300 Charging Cable
Gear cables Shimano EW-SD300-I 1400mm
Gear cables Shimano EW-SD300-I 800mm
Gear Levers Shimano Ultegra Di2 ST-R8170 / BR-R8170 Left Hand Shifter Rear Brake
Gear Levers Shimano Ultegra Di2 ST-R8170 / BR-R8170 Right Hand Shifter Front Brake
Head Set Selcof Headset Spacer Set / 1 1/8" / 15mm + 10mm + 5mm / Black
Head Set Selcof SPORT Integrated Cup Angular Contact Cartridge Bearing V2 Headset For Tapered 1" 1/8th – 1.5" Fork Steerer
Rear Mech Shimano Ultegra Di2 RD-R8150 GS 12-Speed Rear Mech
Seat Clamp Selcof Forged Alloy Bolt Up Seatclamp V3 / 31.8mm / 12mm / Black
Inner Tube Panaracer Inner Tube / 700c / 18-25mm / Presta 48mm

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