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Jamis Portal A2

Jamis Bikes

Jamis Portal A2

Available In-Store Only

Superbike. We’re not the first to make the promise, we will be the first to make good on it. Today, a mountain bike needs to be capable of everything from all day epics to lift-assisted shuttle laps and anything in between. Both the Portal and Hardline fit the bill.

Frame MaterialsLightweight and strong triple-butted 6061 series aluminum tubing, featuring custom over-sized & tapered tubing for increased frame stiffness and durability.One and OnlyThe 1x drivetrain philosophy is to make it simpler, lighter and more durable. Specific chainring tooth profiles, clutch-type rear derailleurs and wide range cassettes are developed for an incredibly wide gear range and maximum control without the need to chain tensioning devices or guides.Tapered Head TubeRiding fast with control requires steering precision, which starts with the front of the bike. Stiffening this area results in less wheel deflection, more wheel control. A full 1.5 head tube and steerer would achieve this, but would add unnecessary weight and bulk, and limit stem choices. But a tapered 1 1 /8 to 1 1 /2 head tube serves up a significant increase in rough terrain tracking and stability without much of a weight penalty compared to standard 1 1 /8 systems.Enduro BearingsUSA made Enduro Max sealed bearings sustain 40% more load capacity than standard radial bearings & provide more lateral support for the multiple forces associated with mountain bike pivots. MAX bearings use CRC Marine Grease that will not wash out or breakdown under extreme circumstances.10mm Shock HardwareOur 10mm shock hardware is NOT the standard from our rear shock suppliers. We have to pay more for it and our productions lead times are usually increased because we specify it. But the increase in lateral and torsional stiffness for our frames and the rear shock durability and performance is worth every extra dollar and every extra delivery day.Short ChainstaysThe rear wheel tucks in with short chainstays. With a 12x148 rear hub, youve got a stiff and responsive rear end.Why Thru Axles?Securing the rear wheel to the frame by threading a 12mm axle into the rear drop-outs is not only safer, its stiffer. The rear wheel tracks directly in line with the frame, for more precise handling, so you can go faster with more confidence. The increase in stiffness of a 15mm fork axle improves steering & handling significantly. It also puts less stress on the forks internals, improving fork durability and performance. The hub drop outs provide a self centering feature for the wheel for fast, easy installation.

Frame

Triple-butted 6061 aluminum, 130mm travel 3VO suspension, Enduro® Max sealed bearing pivots, 1.5 - 1 1/8” tapered head tube, 12x148mm thru-axle, Internal dropper post routing, Custom Jamis upper chainguide mounts, ISCG05 lower chainguide mounts, Rock Shox Deluxe R DebonAir shock, 10mm hardware, replaceable derailleur hanger
Fork Rock Shox Revelation RC 29",15x110mm axle, air spring compression, rebound adjust, tapered alloy steerer, 130mm travel
Wheels WTB ST i25 TCS 29" tubeless rims, 32H, Formula sealed bearing 15x110mm front & 12x148mm rear 6-bolt disc hubs, stainless spokes
Tires Vittoria Martello 29 x 2.35", TNT tubeless
Derailleurs Shimano SLX Shadow Plus, 11-speed
Shiftlevers Shimano SLX, 1x11-speed
Chain KMC X11, 11-speed
Cassette N/A
Pedals N/A
Brakeset Shimano MT500 hydraulic disc, 180mm 6-bolt rotors
Handlebar Race Face Ride, 760mm x 20mm rise, 35mm diameter
Stem Race Face Ride, 50mm extension, 35mm clamp diameter
Seat Post KS E10i Internal Dropper, Southpaw remote
Saddle WTB Volt
Sizes XS (14.5), S (15.5), M (17), L (19), XL (21)
Weight N/A

 

SIZE

TOP EFFECTIVE

HEAD ANGLE

SEAT ANGLE

CHAIN STAY

WHEEL BASE

BB DROP

HEAD TUBE

STANDOVER

STACK

REACH

14.5

22.0/560

LO 67.5 HI 68

LO 74.5 HI 75

17.2/437

44.2/1122

LO 1.3/33 HI 1.0/26

3.7/95

LO 28.7/731 HI 29.1/738

15.6/397

23.5/597

15.5

23.0/585

LO 67.5 HI 68

LO 74.5 HI 75

17.2/437

45.2/1148

LO 1.3/33 HI 1.0/26

4.1/105

LO 29.7/754 HI 29.9/761

16.5/418

23.9/606

17

24.0/610

LO 67.5 HI 68

LO 74.5 HI 75

17.2/437

46.2/1173

LO 1.3/33 HI 1.0/26

4.5/115

LO 29.5/749 HI 29.8/756

17.3/439

24.2/615

19

25.0/635

LO 67.5 HI 68

LO 74.5 HI 75

17.2/437

47.2/1198

LO 1.3/33 HI 1.0/26

4.9/125

LO 29.7/754 HI 29.9/761

18.2/461

24.6/625

21

26.0/660

LO 67.5 HI 68

LO 74.5 HI 75

17.2/437

48.2/1224

LO 1.3/33 HI 1.0/26

5.3/135

LO 30.5/774 HI 30.7/781

18.9/482

24.9/634

SIZE

TOP EFFECTIVE

HEAD ANGLE

SEAT ANGLE

CHAIN STAY

WHEEL BASE

BB DROP

HEAD TUBE

STANDOVER

STACK

REACH

14.5

22.0/560

LO 67.5 HI 68

LO 74.5 HI 75

17.2/437

44.2/1122

LO 1.3/33 HI 1.0/26

3.7/95

LO 28.7/731 HI 29.1/738

15.6/397

23.5/597

15.5

23.0/585

LO 67.5 HI 68

LO 74.5 HI 75

17.2/437

45.2/1148

LO 1.3/33 HI 1.0/26

4.1/105

LO 29.7/754 HI 29.9/761

16.5/418

23.9/606

17

24.0/610

LO 67.5 HI 68

LO 74.5 HI 75

17.2/437

46.2/1173

LO 1.3/33 HI 1.0/26

4.5/115

LO 29.5/749 HI 29.8/756

17.3/439

24.2/615

19

25.0/635

LO 67.5 HI 68

LO 74.5 HI 75

17.2/437

47.2/1198

LO 1.3/33 HI 1.0/26

4.9/125

LO 29.7/754 HI 29.9/761

18.2/461

24.6/625

21

26.0/660

LO 67.5 HI 68

LO 74.5 HI 75

17.2/437

48.2/1224

LO 1.3/33 HI 1.0/26

5.3/135

LO 30.5/774 HI 30.7/781

18.9/482

24.9/634

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