2年の製作期間と、数多いテストを重ねて完成された、 アルミ素材を使用する最高峰のフレーム、SYNTHESIS （シンセサイズ）。カーボンフレームに肉薄する走行 性能、そして重量。これに加え、金属フレームにしか ない耐久性とコストパフォーマンスを実現する、 JAMISならではのアルミフレームである。
Adaptive Cable Entryの頭文字をとったACEシステム。 変速ケーブル、電動変速のワイヤーをフレーム内蔵に するためのシステムである。将来的に電動変速へのアップ グレードを見越しライダーのため、それぞれに対応する 各種グロメットが付属する。
BBの回転を担うベアリング、そしてリアサスの滑らかな動きを実現するベアリングには、アメリカ製『ENDURO』社のものが使われる。このベアリングは、 リテイナーの表面積を増やしたことで耐荷重性を一般より35~45%アップ。さらにベアリングの両脇をシールで防護しグリスの流出を90%防いでいる。 またカーボンフレームには、磁鉄鉱にて表面加工したMAX BLACK OXI DEを採用。ボールの固さと耐久性を高め、BB、ピボットともに長期間の滑らかな 回転を実現する。
BBスピンドルの直径を30mmまで太くし、ベアリング 全体の直径も上げたことにより、ベアリングとハウジング 接触面での回転抵抗を下げ耐久性を高めるBBシステム。
BBスピンドルの直径を30mmのままに、全体の幅を 86.5mmまで広げた新規格のBBシステム。Qファク ターを変えずにBB周りの剛性を高められたことに 加え、デザインの自由度も上げられた。その結果、 チェーンステー剛性を高めるフレームサイズごとの専 用デザイン、そしてタイヤクリアランスを大幅に広げる （RENEGADE）ことが可能となった。
All our frames and forks are tested continually to meet or exceed (in some cases, well exceed) EN standards 14764, 14765, 14766 and 14781 as well as the new ISO 4210 standards. We conduct these tests at our frame manufacturing facilities, but we also use EN accredited testing laboratories such as Intertek and SGS to verify the results of our own tests. If these tests aren’t telling us everything we want to know about our bikes, we increase the loads and cycles, or we determine another way to test. Where current hydraulic testing machines, jigs and hardware aren’t up to the task of emulating some of the forces and impacts our bikes might be subject to, we’ve designed our own.
We relentlessly cycle test for fatigue from pedaling and torsional forces on every single frame size, with deflection tests for stiffness at every point of the frame. Brutal impact tests with massive weights dropped on fixed frames or forks are performed. Then reversed, with weights attached to the frame, the frame hoisted to a given height depending upon product type, then released.
This destructive testing is enormously instructive and important. And it is in continual process. But it’s our ongoing non-destructive testing of frames and forks fresh off the factory floor that’s just as vital.
For our carbon fiber frames, EVERY frame is weighed to make sure it’s neither resin rich nor resin deficient. We also measure the stiffness of each frame in 6 critical areas as a check on lay-up production. Each deflection test must fall within 5% of the standards our machine and field-testing have established. This weighing and stiffness deflection testing guarantees every single frame we produce meets all Jamis manufacturing protocol and will
deliver the ride qualities we defined and demand.
The ICON series frame was modeled after our top-level Xenith. Think Xenith in butted aluminum instead of carbon fiber and you have the idea. We attempted to replicate EVERY attribute of the Xenith in the Icon and tested numerous protos on both our machines and the road repeatedly to get it right. From the precise and snappy handling in turns, to the out-of-saddle explosiveness in sprints, to the solid descent manners that inspire high-speed confidence. Combining the proven race-winning geometry of the Xenith with the durability and affordability of aluminum makes this an ideal CRIT bike, capable of delivering as much acceleration as you can provide the kick for.
The ICON frame features a larger 34.9mm seat tube, which allows us to spec an over-sized 31.6mm seat post. That larger diameter post flexes less than a 27.2mm post, providing a firmer pedaling platform for faster climbs with less wasted energy. Though the flexy 27.2 post might seem to be a good choice as an offset to the firm ride qualities of aluminum, both the Icon Elite and Pro are spec’ed with 31.6mm carbon fiber seat posts to damp in-saddle road feedback, keeping you fresher, longer.
One of the Xenith attributes we could NOT replicate in the Icon was its ability to damp road vibrations. Aluminum is just not as competent in this area as carbon fiber. But for us, this was a plus. If there is any one word that defines the Icon ride, it’s “immediate”. Step on the pedals and you move NOW. Lean to carve a turn and you’re ON IT like a freight train on tracks. There’s an immediacy in your connection to the road on aluminum. With carbon fiber, you tend to feel a bit more insulated from the road. It’s like listening to music with noise-cancelling headphones instead of LIVE. So while there’s a slight trade-off in comfort in selecting aluminum for the Icon over carbon fiber, many riders prefer that immediate connectedness and the confidence that comes from knowing exactly where you are on the road. We still made sure the frame was designed with just enough “give” for daylong rides. But what you are really going to appreciate is its ruthless efficiency. This is speed stripped down to its essence.
The Icon is not just a lighter, faster version of our aluminium Venturas. When we put this project on the design board, we knew we didn’t just want to make a bike that could make a difference. We also wanted to MAKE it differently. Which is what Synthesis is all about: small batch manufacturing. A process that understands a great riding experience begins with a great building experience, one frame at a time.
Scrap the thought that you have to buy carbon fiber to get a bike that’s light enough to race. The beauty of the Icon frame is that it’s lighter than our carbon fiber Xenith Comp (a raw 56cm Icon frame weighs in at 1150 grams!) yet costs much less to manufacture than a carbon fiber frame. So the Icon parts package can be considerably up-spec’ed over a comparably priced carbon fiber bike, ensuring that the Icon will ALWAYS be lighter and faster.
By enlarging the bottom bearing of the head tube from 1 1/8” to 1.5”, not only are head tube stiffness and steering precision increased, but we have sufficient room in the crown to produce a truly hollow fork from the dropout, up through the crown and steerer tube. It’s significantly stronger and stiffer for precise steering while still providing the perfect amount of vertical compliance for comfort.
• Shimano 105 11-Speed group including 105 FC-5800 crankset
• Mavic Aksium Race wheelset
• Tektro R540 forged alloy dual pivot calipers
|Frame||Synthesis double-butted 6061 aluminum, tapered top tube, ovalized down tube, butted chainstays, twin seat stays, 1 1/8-1.5" tapered head tube, Press Fit 30 BB shell, 34.9mm seat tube and replaceable derailleur hanger|
|Fork||Jamis Road carbon composite fork, 1.5” hollow formed crown, monocoque one-piece forming technology, carbon dropouts with stainless axle interfaces|
|Headset||FSA integrated, sealed bearing with nylon upper Compression ring, 1 1/8-1 1/2”|
|Wheels||Mavic Aksium Race wheelset, 20H, 24mm rim profile with UB Control and H2 technology, Mavic alloy hubs with QRM bearings and FTS-L freehub and Self Locking straight pull aerodynamic spokes|
|Tires||Vittoria Zaffiro Slick, 700 x 23c, folding|
|Derailleurs||Shimano 105 RD-5800 rear and 105 FD-5800 braze-on front with 34.9mm alloy clamp|
|Shiftlevers||Shimano 105, ST- 5800 Dual Control STI, 22-Speed|
|Cassette||Shimano 11-Speed 11-28T|
|Crankset||Shimano 105 FC-5800, 50/34T, 165mm (44), 170mm (48/51), 172.5mm (54/56)|
|BB Set||Enduro PressFit 30 with Wheels MFG adaptors|
|Brakeset||Tektro R540 forged alloy dual pivot calipers with cartridge pads and Shimano 105 ST-5800 STI brake levers|
|Handlebar||Ritchey Comp Logic Curve, 6061 aluminum, 31.8 x 380mm (44), 400mm (48/51), 420mm (54/56)|
|Stem||Ritchey 4-Axis, 3D forged 6061 alloy, 6º x 80mm (44), 90mm (48/51), 100mm (54/56)|
|Tape||Fizik Superlight Microsoft Touch with Fizik logo and end plug|
|Seat Post||Jamis carbon fiber micro-adjust, 31.6 x 300mm with Jamis 7075-AL CNC aluminum 1-bolt seat post clamp|
|Saddle||Selle Royal Seta S1 with Integrated Clip System, embossed cover and steel rails|
|Sizes||48, 51, 54, 56cm|
|SIZE||TOP EFFECTIVE||HEAD ANGLE||SEAT ANGLE||CHAIN STAY||WHEEL BASE||FORK RAKE||BB DROP||HEAD TUBE||STANDOVER||STACK||REACH|
|48||20.27 / 515||71.5˚||73˚||15.94 / 405||37.72 / 958||1.97 / 50||2.69 / 68||3.94 / 100||28.15 / 715||19.53 / 496||14.29 / 363|
|51||20.82 / 529||72˚||73˚||15.94 / 405||38.11 / 968||1.97 / 50||2.69 / 68||4.72 / 120||29.33 / 745||20.35 / 517||14.61 / 371|
|54||21.42 / 544||73˚||73˚||15.94 / 405||38.07 / 967||1.69 / 43||2.69 / 68||5.51 / 140||30.16 / 766||21.30 / 541||14.92 / 379|
|56||22.24 / 565||73˚||73˚||15.94 / 405||38.90 / 988||1.69 / 43||2.69 / 68||6.30 / 160||30.90 / 785||22.09 / 561||15.51 / 394|
FIT & SIZING