Isaac developed one of the very first, and certainly the most successful, aero carbon-monocoque frameset designs of all time. It has been hailed as a classic icon. Isaac's Efficiency model is the direct descendant - but with added benefits from half a decade of further development and manifold refinements. This is truly a super-light package. It has an aerodynamically developed form and internal cabling, so the faster you go the more benefit you gain, and vice versa. Light, stiff, comfortable, beautiful and practical; it is everything that an Isaac should be.

1250g frame
Internal cable routing
True monocoque
Intermediate carbon 320 GPA
Devised for low weight and high strength