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HELIUM SL 1305A

Superlight race bike, approximate weight: 750g. The oversized tube shape is engineered with the use of extremely high modulus carbon. This results in a very light frame, without compromising stiffness. The dual purpose internal cable routing uses the same holes for mechanical and electronic shifting, resulting in a very clean design without excess holes. Flex seat stays increase vertical compliance for additional comfort, without reducing lateral stiffness.

  • Use of extremely high modulus aerospace carbon in combination with nano resin to save weight without reducing stiffness.
  • Tubes, designed following Ridley’s “form follows function” philosophy.
  • Carbon rear dropouts with a reinforced steel plate for increased durability.
  • Specially designed oversized press fit BB30 bottom bracket offers a very high level of stiffness for maximal power transfer.
  • Tapered 1-1/8 1-1/4 head tube with angular contact bearings.
  • Flex seat stays provide comfort without sacrificing stiffness.
  • Compatible with electronic and mechanical shifting
  • Curved fork blades, specially designed to combine good stiffness, low weight and the right amount of comfort.

Frame: 60, 40, 30 ton high modulus carbon

Dura-ace

  • FrameHelium SL
  • Fork4ZA Helium SL
  • Brake shifters leversShimano Dura Ace
  • BrakesShimano Dura Ace
  • Front derailleurShimano Dura Ace
  • Rear derailleurShimano Dura Ace
  • CassetteShimano Dura Ace 11s 12-25
  • ChainKMC X11L
  • CranksetShimano Dura Ace 50/34
  • WheelsFulcrum Red Wind 50mm
  • TyresContinental Grand Prix 4000S 23mm
  • Saddle4ZA Cirrus Pro 145mm
  • Stem4ZA Cirrus Pro
  • Handle bars4ZA Cirrus Pro
  • Seat post4ZA Cirrus Pro 27,2mm

Geometry

  • ASeat tube center
  • BSeat tube center top
  • CActual top tube
  • C'Effective top tube
  • DHead tube
  • ESeat Tube Angle
  • FHead tube angle
  • GChainstay length
  • HBB drop
  • IWheelbase
  • JStand over height
  • SStack
  • RReach
Bike geometry image
SizesABCC'DEFGHIJSR
XS440480510525130747240568974740530375
S470510530545145737340566977750545385
M500540550565175737340566990780575390
L5305705705852057273408631003810602400
XL5606005856002307274408631012840625405

Frame passports