Jamis DXT A3 STEP-OVER 2020
2020 Urban
Estimate price |
519$
Weight | 14.4 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 700c -
Travel Front 75mm -
Fork SunTour
-
Groupset Tourney, Shimano -
Suspension Hardtail -
Drivetrain 3 × 7 -
Brakes Mechanical Disc
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Size Specific Design 6061 aluminum with redesigned rear triangle, 1 1/8” head tube, seat stays disc brake mounts, 34.9mm seat tube, replaceable derailleur hanger, fender/rack eyelets and ring lock mount eyelets
Suspension Fork
SR/Suntour SF15-NVX-DS, aluminum lowers, coil spring, 28mm stanchions, 1-1/8" steerer, 75mm travel
Drivetrain
Rear Derailleur
Shimano TY300
Front Derailleur
TY510 top swing
Shift Levers
Shimano Rapid Fire SL-EF41, 2-speed
Cassette
Shimano CS-HG200, 7-speed, 12-32T
Crank
Forged alloy crank with chain guard, 48/38/28T, 170mm (15-17”), 175mm (19-23”)
Bottom Bracket
VP sealed cartridge, 68 x 122.5mm
Chain
KMC Z7
Pedals
Platform style
Wheels
Rims
Alex TD26 disc specific double wall alloy rims, 32H, alloy disc hubs with QR and 14g stainless steel spokes
Tires
CST Dual Sport Tire, 700 x 42c
Brakes
Brakes
Tektro MD-280 cable-actuated disc brakes with 160mm stainless 6-bolt rotors and Shimano EF41 levers
Cockpit
Stem
Jamis Trekking, 3D forged alloy, 15? rise, Length-60mm (15-17”), 90mm (19-23”)
Handlebar
Jamis Riser bar, double-butted aluminum, 25.4 x 10? sweep x 20mm rise x 640mm (15"), 660mm (17-23")
Grips
MTB Type Grip
Headset
Internal Cup, threadless, 1 1/8”
Seat
Saddle
Jamis Touring with SL cover
Seatpost
Jamis alloy micro-adjust, 31.6 x 350mm alloy clamp with QR seatpin
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | 14" | 18" | 20" |
|---|---|---|---|
| Stack Reach Ratio | 1.67 mm | 1.67 mm | 1.68 mm |
| Front Center | 624 mm | 624 mm | 620 mm |
| Rake | 40 mm | 40 mm | 40 mm |
| Trail | 81 mm | 79 mm | 71 mm |
| Stack | 639 mm | 647 mm | 655 mm |
| Reach | 383 mm | 387 mm | 391 mm |
| Top Tube Length | 570 mm | 570 mm | 583 mm |
| Seat Tube Angle | 73.5 ° | 74 ° | 73.5 ° |
| Seat Tube Length | 356 mm | 457 mm | 508 mm |
| Head Tube Angle | 70.5 ° | 71 ° | 72 ° |
| Head Tube Length | 125 mm | 131 mm | 135 mm |
| Chainstay Length | 447 mm | 447 mm | 447 mm |
| Wheelbase | 1064 mm | 1064 mm | 1060 mm |
| Bottom Bracket Drop | 60 mm | 60 mm | 60 mm |
| Standover Height | 648 mm | 671 mm | 669 mm |
| Wheels | 700 | 700 | 700 |
Model Overview
DXT A3 STEP-OVER is part of the Jamis Dxt model. 33 bikes variations carry this model name so far. You can easily view all of the Jamis Dxt bikes models from 2020, here.
Model range prices
Jamis DXT A3 STEP-OVER 2020 is the most affordable bike of this model and has a price of 519$. On the other hand, Jamis DXT A1 2020, is the most expensive and costs 799$.
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.
Average price for Fitness bikes
If you want to purchase a solid Fitness bike, it is important to know that the average cost is 656$. However, you could also get a good Fitness bike even if you pay a lower amount than the average price. To make sure you don’t pay a higher amount than normal for your bike, always do some components analysis and read reviews.
Furthermore, if we have a quick look at this model’s cost, we can see that at its release date the price was 519$. Doing a quick comparison, we notice that DXT A3 STEP-OVER price is 26.4% smaller than the average cost of a Fitness bike.
Fitness bikes average weight
Fitness bikes weigh an average of 11.24 kg (24.78 lbs). Having an easier bike than average will give you a great advantage on climbs. However, a heavier bike will gain more speed on descends.
With a weight of 14.4 kg (31.75 lbs), Jamis bike is much heavier than average. In other words, this model is 28.11% heavier than the average Fitness bike.
Overview of components
Fork
The DXT A3 STEP-OVER comes factory-installed with the SunTour fork. This has a travel range of 75mm. Bike forks are perfect to absorb shocks and provide a great riding experience overall. In short, make sure you choose one with a decent fork when you purchase your dream bike.
Fork material
DXT A3 STEP-OVER has an aluminum fork, so there won’t be much extra weight added to the bike. However, they are not so stiff as carbon forks are.
Wheels
When leaving the production line, the DXT A3 STEP-OVER model has 700c aluminum wheels. There is no doubt, that 700c wheels are very popular on all road bike models. However, while they give you great speed and control, these wheels are not so bump-friendly.
Brakes
Stopping the bike when needed, it’s essential for your safety. This bike has Mechanical Disc brakes. These brakes are also very popular, and a lot cheaper than hydraulic disk brakes. However, performance-wise there is room for improvement.