American Bicycle Group (ABG), the manufacturer of award-winning high-performance bicycles – Litespeed (LS) and Quintana Roo (QR) – this week unveiled its all-new PRsix Disc Series of triathlon bikes at the IRONMAN World Championships in Kona. Disc brakes enhance safety and reliability and are opening the door to improved wheel designs. With the PRsix Disc, there is no longer any restriction on rim shapes and tire sizes. The PRsix Disc is available in five colours – electric blue, neutron, atomic orange, teal, red, black/stealth – and limited colours and sizes are available now. The full line will be available in December 2017.
With no-nonsense braking, easy wheel changes, no rim width adjustments, and thru-axles front and rear, the PRsix Disc is stiffer than ever before and virtually eliminates wheel slip. New internal brake cable routing (front and rear) makes for a clean and more aero overall profile. The PRsix Disc is ready for new levels of aerodynamics, traction, and aero position comfort while racing at any distance.
According to ABG engineer Brad Devaney: “The placement of the callipers is unique and no-nonsense, and avoids gimmicks in the way of shrouds and covers. The rotors are incredibly aero efficient, and because of that, we’ve chosen not to add surface area and complexity. QR remains focused on efficient leading edges of the fork. For the rear brake, we’ve parlayed the LEA technology, which makes the non-drive side chainstay better than invisible. With no leading edge and an optimized ‘sail effect’ surface, we’ve nestled the calliper out of the amplified flow created by our SHIFT+ downtube orientation. I’m super excited to see the linking of technologies integrate so well in our latest design.”
“I’m thrilled about what we have done here,” said Peter Hurley, president, American Bicycle Group. “Our engineering staff has created a bike that is unlike any other in the market. The disc configuration they developed is a huge step and means that changing rim shapes no longer requires brake adjustment. We think it’s the best design ever.”
The PRsix Series, including the Disc, are nearly do-it-yourself bikes when it comes to mechanical fixes and shipping. No need to pay for specialized services when only two sizes of Allen wrenches and a basic knowledge of bike mechanics is needed. Easy to disassemble, ship and reassemble.
The new PRfive and PRsix Series bikes are painted and assembled at ABG’s 40,000 sq. ft. facility in Chattanooga, TN. QR is offering a frameset for $4,295 and has two bike versions – Shimano Ultegra Di2 disc with carbon race wheels for $9,595 and Shimano Dura-Ace Di2 Disc with carbon race wheels for $12,495, all of which can be preordered today.