Jamis PORTAL A2 2021
2021 Mountain
Estimate price |
3,699$
Weight | 15.31 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 29" -
Travel Front 130mm -
Travel Rear 130mm -
Fork Fox Rhythm Float 34
-
Groupset Deore, Race Face -
Suspension Full -
Drivetrain 1 × 12 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
XS
156cm - 166cm
SM
163cm - 174cm
MD
171cm - 182cm
LG
179cm - 189cm
XL
185cm - 195cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Triple-butted 6061 aluminum, 130mm travel 3VO suspension, Enduro¨ Max sealed bearing pivots, 1.5 – 1 1/8Ó tapered head tube, 12x148mm thru-axle, Internal dropper post routing, Custom Jamis upper chainguide mounts, ISCG05 lower chainguide mounts, Fox Float DPS Performance Series EVOL shock w/3-position compression, 10mm shock hardware, replaceable derailleur hanger
Suspension Fork
Fox 34 Rhythm Series Float 29? w/ sweep adjust compression & lock-out,15x110mm axle, air spring compression, rebound adjust, tapered alloy steerer, 130mm travel, 51mm rake
Drivetrain
Rear Derailleur
Shimano Deore, 12-speed
Shift Levers
Shimano Deore, 1×12-speed
Cassette
Shimano M6100, 12-speed, 10-51T
Crank
Race Face Ride, 32T
Bottom Bracket
Race Face BSA
Chain
KMC X12, 12-speed
Pedals
N/A
Wheels
Rims
Stan’s No Tubes Flow D 29? rims, Shimano MT410 15x110mm front & 12x148mm rear hubs, stainless spokes
Tires
Vittoria Mazza 29 x 2.4?, TNT tubeless
Brakes
Brakes
Shimano MT420 4-piston hydraulic disc, 180mm front & 160mm rear RT30 rotors
Cockpit
Stem
Race Face Ride, 50mm extension, 35mm clamp diameter
Handlebar
Race Face Ride, 760mm x 20mm rise, 35mm diameter
Grips
Jamis Lock-On
Headset
FSA Orbit IS Integrated, 8mm cone spacer
Seat
Saddle
WTB Volt
Seatpost
KS Rage Dropper, Southpaw remote
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.5 mm | 1.45 mm | 1.4 mm | 1.35 mm | 1.31 mm |
| Bottom Bracket Height | 341 mm | 341 mm | 341 mm | 341 mm | 341 mm |
| Front Center | 687 mm | 713 mm | 738 mm | 763 mm | 789 mm |
| Rake | 51 mm | 53 mm | 53 mm | 52 mm | 53 mm |
| Trail | 100 mm | 98 mm | 98 mm | 99 mm | 98 mm |
| Stack | 599 mm | 608 mm | 617 mm | 627 mm | 636 mm |
| Reach | 399 mm | 420 mm | 441 mm | 463 mm | 484 mm |
| Top Tube Length | 562 mm | 587 mm | 612 mm | 637 mm | 662 mm |
| Seat Tube Angle | 74.5 ° | 74.5 ° | 74.5 ° | 74.5 ° | 74.5 ° |
| Seat Tube Length | 368 mm | 394 mm | 432 mm | 483 mm | 533 mm |
| Head Tube Angle | 67.5 ° | 67.5 ° | 67.5 ° | 67.5 ° | 67.5 ° |
| Head Tube Length | 95 mm | 105 mm | 115 mm | 125 mm | 135 mm |
| Chainstay Length | 439 mm | 439 mm | 439 mm | 439 mm | 439 mm |
| Wheelbase | 1124 mm | 1150 mm | 1175 mm | 1200 mm | 1226 mm |
| Bottom Bracket Drop | 33 mm | 33 mm | 33 mm | 33 mm | 33 mm |
| Standover Height | 733 mm | 756 mm | 751 mm | 756 mm | 776 mm |
| Wheels | 29" | 29" | 29" | 29" | 29" |
| Rider Min Height | 156 cm | 163 cm | 171 cm | 179 cm | 185 cm |
| Rider Max Height | 166 cm | 174 cm | 182 cm | 189 cm | 195 cm |
Model Overview
PORTAL A2 belongs to the Jamis Portal model. Jamis launched 30 bikes of this model so far. You can get a glimpse at all models from 2021, by clicking on this link.
Model range prices
Jamis PORTAL A2 2021 is the most affordable bike of this model and has a price of 3699$. On the other hand, Jamis PORTAL C1 2021, is the most expensive and costs 8999$.
Safety
When cycling always take safety very seriously. Wear a helmet, obey the traffic rules and wear hi-vis clothes. In short, take care of yourself so others can take care of you.
Trail bikes average price
According to our math, the average price for a trustworthy Trail bike is 2762$. However, this doesn’t mean that if you spend less money on a Trail bike, you couldn’t get a decent one. To sum up, when you purchase your bike, make sure to check if it has reviews, and also do some components research.
At the moment of the release date, Jamis PORTAL A2 price was 3699$. Comparing this to the average Trail bike price, we see that the price is 33.92% more expensive.
Trail bikes average weight
Trail bikes have an average weight of 12.98 kg (28.62 lbs). An easier bike will give you a big advantage in climbs. However, a heavier bike can gain speed when you descend.
Weighing 15.31 kg (33.75 lbs), the PORTAL A2 model is much heavier than average. In other words, this model is 17.95% heavier than the average Trail bike.
Internal Cable Routing
Moreover, this bike comes with internal cable routing allowing you to keep the cables in a good condition. It also makes it look more professional.
PORTAL A2 components
Fork
This bike has the Fox Rhythm Float 34 fork installed. The fork’s travel is 130mm. Bike forks are great for shock absorption and provide you with a smooth ride. In short, you should always ensure you have a good fork when purchasing a bike.
Fork material
The fork on this bike is made out of aluminum, so there won’t be much extra weight added to the bike. However, they are not so stiff as carbon forks are.
Rear Shock
Rear shocks improve riding comfort and give you greater control over all terrains. To sum up, get a full-suspension bike if you want the smoothest rides.
Wheels
When it comes to wheels, the PORTAL A2 bike is equipped with the 29″ aluminum model. These wheels are more forgiving when you go over roots, rocks, bumps, or other obstacles you encounter on your ride. However, these wheels are not ideal for smaller people.
Brakes
For your safety, it is important to have quality breaks on your bike. Jamis PORTAL A2 has Hydraulic Disc brakes installed. Hydraulic disc brakes are perfect for mountain biking, road cycling, and commuting. To sum up, you can ride your bike with confidence.
Sizes
There are 5 sizes available for this model. Rider height can be anywhere between 156 cm – 195 cm (5.12 ft – 6.4 ft). In short, it won’t be difficult to find the right one for you.
Dropper post
A dropper post is included with the PORTAL A2. A dropper post is a must-have these days if you’re riding anything remotely technical. The main benefit of a dropper post is increased safety while riding. As mentioned above, the lever system allows you to quickly move the saddle out of the way when approaching descents or trail obstacles.