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Planet X


Our Aero Advantage


Competition Busting TT & Triathlon Bike

Stealth TT 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
AHead Angle (°)72.572.572.572.5
BHead Tube Length (mm)95100120130
CEffective Top Tube Horizontal (mm)510530550570
DSeat Angle (°)76767676
ESeat Tube Length Centre to Top (mm)480510540570
IStack (mm)497501510530
JReach (mm)386405420438


Planet X

Stealth range

From £1,099.99
Planet X Stealth SRAM Rival 22 Time Trial Bike

Our legendary carbon framed Stealth is the ideal TT and Triathlon speed weapon.

  • Full carbon frame & forks
  • Selcof Alloy aero bars
  • SRAM Rival 11 groupset
  • Vision Team 35 wheelset
  • Weight: circa 8.6kg, based on size medium

From £1,299.99
Planet X Stealth Pro Carbon Shimano Ultegra R8000 Time Trial Bike

Tried and tested the Stealth keeps getting better and better, and we think this is the fastest Stealth build we've ever put together. With Selcof's Ultra Carbon TT bars, and Vision Team 35 wheelset the Stealth Pro Carbon Shimano Ultegra is designed for pure speed and is perfect for releasing your true full race-pace potential.

  • High quality Mitsubishi carbon frame
  • Shimano Ultegra R8000 Groupset
  • Selcof Carbon Ultra TT Bars
  • Vision Team 35 comp wheelset