“As good as it gets” is never good enough at Jamis. And our all-new, totally redesigned Xenith proves it. The Xenith was already a multiple awards-winning, race-vanquishing powerhouse that many on Jamis/Hagens Berman p/b Sutter Home didn’t want us to tamper with. But our engineers and designers weren’t content with today’s accolades and podiums when tomorrow’s beckoned. The development effort on this bike wasn’t just about tweaking what we had; it was about starting from scratch to create what we could. The result? A radically new frame and fork design and wholly new manufacturing process that has delivered the lightest, stiffest, most aero road bike we’ve ever produced.
Ride-Tuned Seat Stays
Having direct-mount/dual-pivot calipers bolted to the chainstays frees the seatstays from their traditional role as a brake system reinforcement. So we can focus on designing and tuning the seatstays for their primary purpose: ride compliance and torsional stability.
Windshield II Fork
The aerodynamic advantages of the original Windshield fork, which shrouded the rear-facing front brake on our Xenith T2 time trial bike within the fork blades, has been proven time after time in the wind tunnel and on the race course. And it led us to develop a lighter version for use on the new Xenith SL, Team and Pro. This new fork design, with trailing direct-mount brake, reduces drag by nearly 4% compared to last year’s fork with leading caliper brake. An advantage you’ll appreciate the next time you’re pulling a breakaway or closing the gap solo.
Tapered, Tri-oval Tubing Profiles
The top and down tubes of the Xenith frame are tapered and tri-ovalized for optimal stiffness in the lightest possible package. This tubing design orients the axis of each of the ovals to increase lateral and torsional stiffness while optimizing vertical compliance in the precise location it is needed.
We've Ace'd It
Every 2014 Xenith is equipped with our new Adaptive Cable Entry (ACE) system that allows our frames to cleanly manage the internal routing of brake and derailleur cables or electronic Di2 wiring. Xenith models specified with standard cable-actuated drivetrains will be outfitted with ACE plates with integrated cable stops. But we also include with every bike an extra set of ACE plates for Di2 wiring should you ever wish to make the jump to electronic shifting.
BB386 EVO Shell
The BB386 EVO bottom bracket design amplifies the benefits of the proven BB30 system. It takes the lighter, stiffer 30mm alloy spindle from the BB30 design, incorporates press-fit bearing cups instead of direct-fit bearings and marries both to a wider 86.5mm BB shell. All without changing Q-factor. Why a wider shell? It allows us to increase the diameter of our seat and down tubes at the BB shell a full 30%, for increased stiffness where you really need it. We can also optimize chainstay design with an increased diameter that doesn’t crowd the rear tire.
SST For the Right Ride
Size specific tubing optimizes ride quality and assures the lightest possible weight for each frame size. SST engineering applies not only to the main frame – our 56, 58 and 61cm frames are designed with top and down tubes 10% larger than on the 44 – 54cm -- but to the seat stays as well. The result is a bike that handles precisely, accelerates explosively and offers compliance for EVERY rider.
Chainstay design is critical for the efficient transfer of power from pedal to wheel. But simply beefing up the entire area to prevent frame flex under pedaling torque can yield unnecessary weight gain and stiffness. The Xenith chainstay design maximizes stiffness while minimizing weight through asymmetrical design - the driveside chainstay is 15% larger and 30% stiffer to offset drivetrain induced flex.
Direct Mount Brake System
The rear-facing, post-mount, linear-pull TTV brakes on the SL, Team and Pro offer not just an aerodynamic advantage when bolted to our Windshield II fork, but a performance advantage as well. These brakes are powerful! The Dura Ace BR-9010 or Tektro T740R direct mount/dual-pivot calipers mounted on the chainstays of all Xenith models reside symmetrically over the wheel, with arm placement closer to the rim. When coupled with equal cable pull on each side of the rim, modulation is increased significantly. We include an inline QR so wheel changes are no sweat.
Near Net SPV Molding
We’ve taken our revolutionary Near Net dual-molding manufacturing process, that utilizes both silicone and polystyrene internal cores to support the frame shape while it is being pressurized within the steel mold, and added a vacuum purge procedure before molding that compresses and eliminates all air between carbon plies. Compaction is absolutely optimized. Not only is weight reduced while stiffness and strength are increased, but over-reliance on fragile and harsh-riding super-high modulus fiber is minimized. The result is lighter, faster, stiffer, stronger frame that simply rides better. A dual-molding manufacturing process that yields near perfect compaction and eliminates fiber wash and wrinkles during the molding process.
XENITH PRO FEMME
XENITH RACE FEMME
XENITH COMP FEMME