Holdsworth Helm Shimano Ultegra Di2 Titanium Road Bike Holdsworth Helm Shimano Ultegra Di2 Titanium Road Bike Holdsworth Helm Shimano Ultegra Di2 Titanium Road Bike Holdsworth Helm Shimano Ultegra Di2 Titanium Road Bike Holdsworth Helm Shimano Ultegra Di2 Titanium Road Bike
Frame
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
Groupset
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
Frame
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
Groupset
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
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📏 Sizing and Geometry

Rider Height Suggested Frame Size
5′4″ to 5′7″ XSM
5′6″ to 5′8″ SML
5′7″ to 5′10″  MED
5′9″ to 6′1″ LRG
6′0″ to 6′4″  XLG

    XSM SML MED LRG XLG
A Head Angle (degrees) 71.5 72 72 72.5 72.5
B Head Tube (mm) 100 120 140 160 180
C Top Tube  Effective(mm) 500 520 540 560 580
D Seat Tube Angle (degrees) 74 74 73.5 73.5 73
E Seat Tube C-T (mm) 485 515 535 555 575
F Chainstays (mm) 415 415 415 415 415
G BB Drop (mm) 74 74 72 72 70
H Stack (mm) 505 526 543 564 581
I Reach (mm) 355 369 379 393 402
J Front Centre (mm) 552 568 584 600 615
K Wheelbase (mm) 955 972 988 1004 1020

🔧 Build Kit

SRAM Flat Mount Disc Brake Mounting Hardware / 32mm / Single
Selcof Road Disc Carbon Fork / Matt Black
Selcof Carbon Steerer Fork Bung MK 4 / 23-24mm ID
Selcof Forged Alloy Bolt Up Seatclamp V3 / 31.8mm / 12mm / Black
Bike Build Packaging Rear Derailleur Protector
Selcof Headset Spacer Set / 1 1/8" / 15mm + 10mm + 5mm / Black
Token Omega Headset For Tapered 1" 1/8th – 1.5" Fork Steerer
Front Mech Band On Clamp For SRAM YAW / 31.8mm / Black

🔧 Groupset

Shimano Ultegra Di2 ST-R8170 / BR-R8170 Left Hand Shifter Rear Brake
Shimano Ultegra Di2 ST-R8170 / BR-R8170 Right Hand Shifter Front Brake
Shimano SM-BBR60 BSA Bottom Bracket
Shimano Ultegra FC-R8100 Chainset / 172.5mm / 52/36T
Shimano CS-R8100 12-Speed 11-34 Cassette
Shimano Ultegra Di2 RD-R8150 GS 12-Speed Rear Mech
Shimano Ultegra Di2 FD-R8150 Braze On Front Mech
Shimano CN-M8100-12 Speed Chain 120L
Shimano RT-MT800 160mm Centrelock Rotor
Viner Settanta Di2 Spares / Battery Holder
Shimano SM-MA-R160D/D Mount Adapter
Shimano BT-DN300 Battery
Shimano EW-EC300 Charging Cable
Shimano EW-SD300-I 1400mm
Shimano EW-SD300-I 800mm

Finance with Newpay and Planet X

You could enjoy a credit limit of up to £5000, and once you’ve bought something, you can choose a payment plan to suit you. It’s super-easy to apply and we’ll even do a no-risk check first to see if you're eligible

Easy Assembly

Assembling your new bike couldn't be easier. Every bike comes expertly packed at least 95% pre assembled, with step by step instructions to get the bike ready to roll. 

So you can get out on that first ride without delay! 

Hand Built in South Yorkshire

All Planet X, On One, Holdsworth and Titus Bikes are expertly hand built to order in South Yorkshire.

Every bike is comprehensively inspected before shipping to ensure your bike is perfect when it arrives at your door.

Not sure on your size? Get Fitted!

Get fitted to your bike at Planet X Headquarters by one of our trained fitters. 

With our Mini Bike Fit, we can advise on sizing, optimise your ride for maximum comfort and efficiency and help you make the right component choices. all for a refundable deposit of £25.

Customer Reviews

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