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Planet X


Our Aero Advantage


Competition Busting TT & Triathlon Bike

The Stealth has carried more cyclists through more seasons of competition than any other TT / Triathlon frame. The Stealth was the first TT-specific carbon frame to bring high-end aero performance to the masses and it's still going strong today

Years of development means the Stealth frame boasts a refined and assured ride. It has a slightly less extreme position than our Exocet TT bike, but still delivers incredible speed to a broad range of cyclists. Being positioned slightly higher is favoured by less flexible riders, as well as by Triathletes who need comfort for endurance, to minimise hip-flexor cramp for the run ahead.

With a wide range of groupsets available, your ultra-fast dream aero bike is here waiting for you. The Stealth is the perfect partner for TT and Triathlon success this season and beyond.


  • Stealth TT/Triathlon Bike
  • Proven Aero Performance
  • Toray T700 IM Carbon Fibre
  • Monocoque Construction Frame and Fork
  • Aero Wheel Options
  • Multiple Groupset Choices
View Range



Size & Specs

Bike frame geometry
    S M L XL
A Head Angle (°) 72.5 72.5 72.5 72.5
B Head Tube Length (mm) 95 100 120 130
C Effective Top Tube Horizontal (mm) 510 530 550 570
D Seat Angle (°) 76 76 76 76
E Seat Tube Length Centre to Top (mm) 480 510 540 570
I Stack (mm) 497 501 510 530
J Reach (mm) 386 405 420 438


If you're unsure about the size you need, please call our customer services team to see if we can help +44 (0)1709 38 66 66

Planet X

Stealth range

Shimano 105 Edition

From £1,199.99
Planet X Stealth Pro Carbon 105 Time Trial Bike

A huge discount on our entry level Time Trial / Triathlon carbon bike. Designed for pure speed, the Stealth Pro Carbon TT bike is perfect for releasing your true full race-pace potential.

  • High quality Mitsubishi carbon frame
  • Shimano 105 5800 drivetrain
  • Vision Team 35 Semi-Aero wheelset
  • Selcof light alloy aero bars

Stealth SRAM Force 11 TT Edition

From £1,499.99
Planet X Stealth SRAM Force 11 Time Trial Bike

Our legendary carbon framed Stealth is the ideal TT and Triathlon speed weapon. Now fully pimped out!

  • Full carbon frame & forks
  • Carbon Stealth aero bars
  • SRAM Force 11 groupset
  • Planet X 52mm carbon clincher wheelset
  • Weight: circa 8.45kg, based on size medium