Jamis EXPLORER A1 2021
2021 Mountain
Estimate price |
649$
Weight | 15.65 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
Category -
Frame Aluminum -
Wheels 27.5" -
Travel Front 80mm -
Fork SunTour
-
Groupset Tourney, Shimano -
Suspension Hardtail -
Drivetrain 3 × 8 -
Brakes Mechanical Disc
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
6061 TIG-welded aluminum, all-new sport comfort design with upright ride position, replaceable derailleur hanger
Suspension Fork
SR Suntour XCE 27.5”, coil spring, external preload adjustor, 28mm stanchions, aluminum lowers, 80mm travel
Drivetrain
Rear Derailleur
Shimano TX-800 rear, Shimano TY710 31.8mm top swing/ dual pull front
Shift Levers
Shimano EZ-Fire Plus, ST-EF510, 24-speed
Cassette
Shimano HG20, 8-speed, 12-32
Crank
Shimano TY301, 48/38/28T, 170mm with chainguard
Bottom Bracket
Sealed cartridge, 68 x 110.5mm
Chain
KMC Z7
Pedals
Comfort platform with TPE non-slip insert
Wheels
Rims
Double-wall alloy rims, 32H, alloy hubs with QR, 14g stainless steel spokes
Tires
CST – 1918, 27.5 x 2.1
Brakes
Brakes
Tektro forged alloy direct pull brakes with Shimano levers
Cockpit
Stem
Jamis alloy, angle-adjustable, 90mm ext x 150mm quill (14 ?18”) or 110mm ext x 180mm quill (19 ?21”)
Handlebar
Comfort hi-rise, alloy 25.4 x 80mm rise x 15 ? sweep x 640mm
Grips
Kraton comfort
Headset
Internal cup, threaded, 1 1/8”
Seat
Saddle
Jamis Comfort with memory foam, synthetic suede top, burnished side panels and bumper springs
Seatpost
Suspension, alloy micro-adjust, 350mm x 27.2mm, with alloy QR clamp
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | SM | 15" | SM | 17" | SM | 19" | 21" |
|---|---|---|---|---|---|---|---|
| Bottom Bracket Height | 284 mm | 284 mm | 284 mm | 284 mm | 284 mm | 284 mm | 284 mm |
| Rake | 42 mm | 42 mm | 42 mm | 42 mm | 42 mm | 42 mm | 42 mm |
| Top Tube Length | 562 mm | 572 mm | 584 mm | 594 mm | 601 mm | 605 mm | 624 mm |
| Seat Tube Angle | 72 ° | 71 ° | 71 ° | 71 ° | 71 ° | 71 ° | 71 ° |
| Seat Tube Length | 356 mm | 381 mm | 406 mm | 432 mm | 457 mm | 483 mm | 533 mm |
| Head Tube Angle | 69 ° | 69 ° | 69 ° | 70 ° | 70 ° | 70 ° | 70 ° |
| Head Tube Length | 140 mm | 135 mm | 150 mm | 165 mm | 160 mm | 185 mm | 210 mm |
| Chainstay Length | 457 mm | 457 mm | 457 mm | 457 mm | 457 mm | 457 mm | 457 mm |
| Wheelbase | 1064 mm | 1062 mm | 1074 mm | 1073 mm | 1079 mm | 1084 mm | 1104 mm |
| Bottom Bracket Drop | 71 mm | 71 mm | 71 mm | 71 mm | 71 mm | 71 mm | 71 mm |
| Standover Height | 488 mm | 725 mm | 494 mm | 791 mm | 491 mm | 831 mm | 877 mm |
| Wheels | 27" | 27" | 27" | 27" | 27" | 27" | 27" |
Model Overview
EXPLORER A1 is part of the Jamis Explorer model. 16 bikes variations carry this model name so far. You can easily view all of the Jamis Explorer bikes models from 2021, here.
Model range prices
Jamis EXPLORER A2 STEP-THRU 2021 is the most economical model, with a starting price of 499$. Jamis EXPLORER A1 2021 on the other hand costs 649$, and is the most expensive model.
Safety
Take safety seriously when you ride your bike, and always wear your helmet. Moreover, don’t ride on the sidewalk. This is actually against the law in some states and can be dangerous for both you and pedestrians.
Average price for Crosscountry bikes
According to our math, the average price for a trustworthy Crosscountry bike is 1905$. However, paying less money than this amount doesn’t mean that you couldn’t get a great Crosscountry bike. To make sure you don’t pay a higher amount than normal for your bike, always do some components analysis and read reviews.
When Jamis released this model in 2021, its price was 649$. If we compare this with the average Crosscountry bike cost we notice that the price is 193.53% lower.
Average weight for Crosscountry bikes
Crosscountry bikes have an average weight of 12.4 kg (27.34 lbs). It is a good advantage to have a lighter bike than the average. However, a heavier bike is more efficient on descents.
Jamis EXPLORER A1 it’s weighing 15.65 kg (34.5 lbs). At this weight, is much heavier than average. In other words, this model is 26.21% heavier than the average Crosscountry bike.
EXPLORER A1 components
Fork
This bike has the SunTour fork installed. The fork’s travel is 80mm. Bike forks absorb the shocks and give you a smooth and pleasant ride. To sum it all, when buying a bike, ensure that you look for a fork capable of decent travel.
Fork material
The fork on this bike is made out of aluminum, which is a lighter material. However, it is not as tough, nor durable as steel is.
Wheels size
The EXPLORER A1 2021 bike is equipped with 27.5″ aluminum wheels when leaving the factory. These wheels will provide you with more control over the bike. However, the 27.5″ wheels are less forgiving than the 29″ wheels.
Brakes
Stopping the bike when needed, it’s essential for your safety. This bike has Mechanical Disc brakes. They are much easier to maintain than hydraulic disk brakes. However, with hydraulic disk brakes, you have the ultimate braking power!