American Custom Bicycles in Steel, Titanium and Ti/carbon mix
New technology should lead to a better ride experience. So when we made our category defining Axiom and 622 road bikes available with disc brakes, we wanted to do more than simply offer a different way to stop the bike.
Disc brakes do a few positive things for riders. First, they make it possible to brake later and with more confidence. Second, they make weather, wet or cold, less of an issue. The result is a bike you will descend on more quickly and will ride on more days of the year.
Designing disc brake road bikes is about much more than simply changing the location of the brake caliper. The stopping forces associated with disc brakes are torsional, rather than symmetric, as with rim brakes, so the construction of the disc dropout needs to be stronger than a conventional dropout and the asymmetry that results needs to be counterbalanced with other aspects of the frame, like chainstay diameter and wall thickness, as well as seat stay diameter and compliance.
Another thing to consider is weight. Stronger dropouts and heavier brake calipers make disc bikes heavier than the performance road bikes we've built over the decades. So, we've also developed new build techniques to reduce extraneous weight in the frame, so that the weight cost for going disc is offset to some degree and the bike remains competitively light. Advanced tube butting techniques, more aggressive machining of the tubeset, and some clever parts choices are the ways we deliver a lighter disc road bike.
All of Seven's road bikes are available in disc and rim brake configurations. Consider these three sample builds, or build your own today.
We’ve outfitted this bike with SRAM’s Red AXS group set with wireless shifting, hydraulic brakes, and Industry 9 Disc wheels. This is a real cutting edge titamium disc road bike, extra light, durable, and low service. This bike competes happily with any top-of-the-line carbon road bike, but adds high value features like strategic comfort, custom geometry and long-term durability those bikes can't replicate.
This bike comes with the progressive and super-light SRAM Force AXS group set with bulletproof Chris King handbuilt wheels. Straight-gauge titanium makes this a stiff, yet refined, speed machine with 1” chainstays to boost power transfer and moto seatstays to increase traction and rear end compliance.
The 622 S Super Climber brings our proprietary filament wound carbon fiber into the mix to amplify your uphill effort. A complete Ultegra 8070 group set with electronic shifting and hydraulic brakes provides the most up to date technology.
A frame modification package to dramatically reduce frame weight.more
Larger diameter tubes, with thinner tube walls, increase both bending and torsional stiffness by 32% over our 7/8” stays. We hold the weight down by custom butting the tube stock in house.more
(included with XX) 75% stiffer than the most popular titanium thru-axle disc brake dropout on the market. These custom asymmetric dropouts save 60 grams of weight over our conventional disc brake dropout system.more
($95) With Moto, we’ve been able to improve rear tire traction without reducing frame stiffness. We achieve these traction improvements through a combination of more aggressive bend profile, bending in multiple planes (3D), and a new tube butting process. What you get is a seat stay with a more dramatic shape that dissipates multi-directional force, and minimizes weight.more
(included with XX)We save 40 grams of weight by eliminating the standard, external seat binder and reducing the seat tube extension. more
($295) Our Max Power Seatpost has a 30.9mm diameter with a razor-thin tube wall, so it is both lighter than a conventional 27.2mm post and stiffer at the same time. Despite its trim profile, it far exceeds DIN fatigue testing standards, and each one is custom butted and handmade for its rider’s specific needs.more
($included with XX) When you introduce asymmetry into a frame design, you have to restore balance. Our Synergetic Chainstays serve this function. Their unique design allows clearance for full-sized chainrings and 28c tires. They let us run a sub-41cm chainstay with a 160 mm disc rotor.more
($95) Our Slipstream Di2 wiring upgrade, designed specifically for the newest Shimano Dura Ace 9150 and 9170, and Ultegra 8050 and 8070 components, offers a number of improvements for 2018.more
($95) Great for performance-minded riders that want to use crank-based power meters with oversized axles and Di2 wiring.
($95) This is the industry's first titanium direct mount hanger for Shimano rear derailleurs. About three times stiffer than a typical aluminum hanger, and tough as nails.
Email us at email@example.com to learn more.