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Planet X Bikes

Holdsworth Helm Shimano Dura-Ace 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 Dura-Ace Di2 2x12 Drivetrain
  • Aerospace Grade 9 3AL-2.5V Titanium Frame
  • Selcof Carbon Tubeless Ready Wheels
  • High Modulus Carbon Fork
  • Weight - Medium - 8kg


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Holdsworth Helm Shimano Dura-Ace Di2 Titanium Road Bike From £5,499.99
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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

Now featuring SERVO WAVE ACTION brake technology, the new DURA-ACE ST-R9270 brake lever delivers modulation and control like never before. Wireless shifting keeps your bike looking clean while offering the fastest, most precise gear changes available. All of this resides in a dual control lever to employs the most advanced materials to offer light weight and refined ergonomics that provide comfort and control for the most demanding conditions.

With an all-new mono-body construction design, high performance braking has reached a new peak. The BR-R9270 caliper drops weight while also providing increased pad clearance, ensuring a quieter ride. Lastly, a new bleeding process makes maintenance easier than ever.

The DURA-ACE FC-R9200 crank performs two vital functions; transferring your pedalling effort into the drivetrain and ensuring the fastest, most precise front shifting available. With HOLLOWTECH II crank arms to ensure light weight and Shimano's class-leading chainring designs, the FC-R9200 won't let you down.

Product TypeDefault Component
Bar Tape / Grips

Selcof Soft Touch Handlebar Tape / Black

FrameHoldsworth Helm Titanium Road Frame / Medium - 53.5cm
Handle BarSelcof Zeta V3 Alloy Road Bar / 42cm
SaddleSan Marco Shortfit Open-Fit Start-Up Superwide Saddle / Xsilite Rail
Seat PostSelcof Zeta 6061 Alloy Seatpost / 27.2mm / 350mm
StemSelcof Zeta 6061 Alloy Stem / 100mm / 31.8mm / 7 Degree
TyreHutchinson Fusion 5 Performance 700c Folding Tyre / 28mm / Black
Wheel PairSelcof 45 Carbon Disc Wheels / Shimano Road 11/12 Speed
Bottom BracketShimano BB-R9100 BSA Bottom Bracket
Brake spareShimano RT-MT900 160mm Centrelock Rotor
Brake spareShimano SM-MA-R160D/D Mount Adapter
Brake spareSRAM Flat Mount Disc Brake Mounting Hardware / 32mm / Single
CassetteShimano CS-R9200 12-Speed 11-34 Cassette
ChainShimano CN-M9100-12 Speed Chain 120L
Crank SetShimano Dura Ace FC-R9200 Chainset / 172.5mm / 52/36T
Front MechFront Mech Band On Clamp For SRAM YAW / 31.8mm / Black
Front MechShimano Dura Ace Di2 FD-R9250 Braze On Front Mech
ForkSelcof Road Disc Carbon Fork / Matt Black
Head SetSelcof Carbon Steerer Fork Bung MK 4 / 23-24mm ID
Frame SpareShimano BT-DN300 Battery
Frame SpareShimano EW-EC300 Charging Cable
Gear cablesShimano EW-SD300-I 1400mm
Gear cablesShimano EW-SD300-I 800mm
Gear LeversShimano Dura Ace Di2 ST-R9270 / BR-R9270 Left Hand Shifter Rear Brake
Gear LeversShimano Dura Ace Di2 ST-R9270 / BR-R9270 Right Hand Shifter Front Brake
Head SetSelcof Headset Spacer Set / 1 1/8" / 15mm + 10mm + 5mm / Black
Head SetSelcof SPORT Integrated Cup Angular Contact Cartridge Bearing V2 Headset For Tapered 1" 1/8th – 1.5" Fork Steerer
Rear MechShimano Dura Ace Di2 RD-R9250 GS 12-Speed Rear Mech
Seat ClampSelcof Forged Alloy Bolt Up Seatclamp V3 / 31.8mm / 12mm / Black
Inner TubePanaracer Inner Tube / 700c / 18-25mm / Presta 48mm

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